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Discourse Production and Right Hemisphere Disorder

Authors:
  • Duke University School of Medicine

Abstract and Figures

Discourse production deficits associated with right hemisphere disorder (RHD) can impede aspects of daily living, including socialization, community reintegration, and vocational duties. Adults with RHD are referred to speech-language pathologists (SLPs) infrequently. However, a growing interest in the pragmatic ramifications of acquired brain damage may result in an increase of referrals in the future. For this reason, it will be important for SLPs to be familiar with basic knowledge pertaining to communication behaviors across discourse genres. The purpose of this article is to provide a broad foundation of the behavioral manifestations of discourse production deficits following RHD, in hopes of providing practical information applicable to the practicing clinician.
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Discourse Production and Right Hemisphere Disorder
Jamila Minga
Department of Allied Professions, Communication Disorders Program,
North Carolina Central University
Durham, NC
Disclosures
Financial: The author has no relevant financial interests to disclose.
Nonfinancial: The author has no relevant nonfinancial interests to disclose.
Abstract
Discourse production deficits associated with right hemisphere disorder (RHD) can impede
aspects of daily living, including socialization, community reintegration, and vocational
duties. Adults with RHD are referred to speech-language pathologists (SLPs) infrequently.
However, a growing interest in the pragmatic ramifications of acquired brain damage may
result in an increase of referrals in the future. For this reason, it will be important for
SLPs to be familiar with basic knowledge pertaining to communication behaviors across
discourse genres. The purpose of this article is to provide a broad foundation of the
behavioral manifestations of discourse production deficits following RHD, in hopes of
providing practical information applicable to the practicing clinician.
Efficient and pragmatically appropriate production of various discourse genres is essential
to communication. Informing medical staff of events that led to an injury, describing how to
assemble a childs toy, and engaging in dialogue over dinner are just a few communicative
interactions that highlight the ubiquity of genre-specific discourses in daily communication.
Adults without brain damage may effortlessly use a myriad of discourse genre to complement
social interaction. However, right hemisphere brain disorder (RHD) can result in inefficient and
inappropriate discourse production.
A constellation of cognitive-linguistic disorders, either in isolation or in combination,
can contribute to observed differences in discourse production following RHD (see Tompkins,
Klepousniotou, & Gibbs-Scott, 2017 for a review). Cognition may be affected in one or more
areas of attention, memory, and executive functioning. Linguistic-related deficits including
referential communication (Chantraine, Joanette, & Ska, 1998), prosody (Baum & Dwivedi, 2003),
lexical semantics (Joanette, Goulet, & Hannequin, 1990), and figurative language (Lundgren,
Brownell, Cayer-Meade, Milione, & Kearns, 2011; Van Lancker & Kempler, 1987) can also
occur even when the basic building blocks of language are preserved (e.g., syntax, grammar,
and intelligibility).
Discourse is considered a point of intersection between language and cognition (Ylvisaker,
Szekeres, & Feeney, 2001). Thus, the co-occurrence of cognitive-linguistic deficits can contribute
to discourse that is content deprived (Joanette & Goulet, 1990), disinhibited, tangential, and
plagued with inappropriate comments and humor (Brownell & Martino, 1998; Klonoff, Sheperd,
OBrien, Chiapello, & Hodak, 1990). Whereas some deficits associated with RHD may improve
over the course of the rehabilitation period (i.e., anosognosia and visual-spatial neglect), discourse
deficits may remain an unchanged (Blake, 2006) and debilitating consequence of RHD. Disruption
of overall quality of life related to interpersonal, social, and vocational adjustment is one potential
consequence of RHD; yet few, if any, referrals to speech-language pathology target improving
discourse production (Blake, Duffy, Tompkins, & Myers, 2003).
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Rationales for the lack of referrals specifically targeting discourse production deficits
following RHD are multifaceted and a detailed discussion extends beyond the scope of this article.
Reduced knowledge and understanding of communication behaviors by clinicians, researchers,
and medical practitioners (Blake et al., 2003; Douglas, 2016) alike, coupled with the heterogeneity
of resulting cognitive-communication disorders and discourse production differences, the absence
of agreed upon measures to aid in the identification of discourse production deficits (Tompkins,
Fassbinder, Lehman-Blake, & Baumgaertner, 2002), and lack of treatment protocols specific
to discourse production may factor into diminished referrals. Clinicians, however, can aid in
reconciling the discrepancy between rehabilitation services for and the existence of discourse
production deficits following RHD. Developing a reasonable expectation of possible differences
in the discourse production behaviors of adults with RHD as a basis of consideration during the
clinical screening process is a necessary first step in this reconciliation process.
The purpose of this article is to provide the clinician with a broad foundation of discourse
production behaviors that may be observed in adults with RHD. A brief discussion of discourse and
how it is represented in the RHD literature is followed by descriptions of possible communication
behaviors, discourse sampling techniques, and possible strategies for advancing the discourse
production literature, at the clinical level.
Discourse Production Representation
Discourse can be thought of as language in usewherein the language (e.g., spoken,
written, or signed) is larger than a sentence and serves to promote a specific action and meaning
in a real-world context (Cameron, 2001; Halliday, 1978, 1994; Martin & Ringham, 2000). Many
discourse genres can be subsumed under this definition, each varying in structure and content
of information. While discourse production deficits are duly noted in adults with RHD, studies
have primarily focused on narrative discourse processing (e.g., Bihrle, Brownell, Powelson, &
Gardner, 1986; Hough, 1990; Rehak, Kaplan, Weylman, Brownell, & Gardner, 1992; Roman,
Brownell, Potter, Seibold, & Gardner, 1987; Wapner, Hamby, & Gardner, 1981). It is not surprising
then, that narrative discourse production is emphasized to a greater extent in the published
literature of discourse production (e.g., Joanette & Goulet, 1990; Joanette, Goulet, Ska, &
Nespoulous, 1986; Sherratt & Bryan, 2012; Sherratt & Penn, 1990). Fewer published inquiries
exist that focus on procedural discourse production (e.g., Bartels-Tobin & Hinckley, 2005;
Sherratt & Penn, 1990; Ulatowska, Allard, & Chapman, 1990) and conversational discourse (e.g.,
Barnes & Armstrong, 2010; Brady, Mackenzie, & Armstrong, 2003; Hird & Kirshner, 2003; Kennedy,
2000; Kennedy, Strand, Edythe, Burton, & Peterson, 1994;).
Discourse production has been explored at two structural levels: (a) microstructure and
(b) macrostructure (see Table 1.). The microstructure of discourse involves the individual words,
clauses, sentences, and turns of talk, with respect to conversational discourse, and how each
entity relates to the other to achieve meaning (Glowalla & Colonius, 1982). The macrostructure of
discourse is the global topic, central message, or gist of the discourse (Myers, 1999; van Dijk, &
Kintsch, 1983).
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Effective discourse production is dependent on the successful organization and execution
of language at both the microstructure and macrostructure levels. Cohesive ties (e.g., conjunctions,
personal pronouns, and demonstrative pronouns), vocabulary complexity, and variability of
sentence structure with respect to sentence length, grammar, or use of past tense, for example,
are some aspects of discourse microstructure. Appropriate discourse microstructure facilitates a
clear discourse macrostructure. That is, decisions about word choice and sentence construction,
with respect to organization and complexity, have a direct bearing on the development of an overall
theme or gist of the discourse. Differences in discourse production in adults with RHD have been
realized to a greater extent at the macrostructural level (Delis, Wapner, Gardner, Moses, 1983;
Hough, 1990; Marini, Carlomagno, Caltagirone, & Nocentini, 2005) although some differences in
microstructure have been noted (Bartels-Tobin & Hinckley, 2005; Joanette et al., 1986; Kennedy
et al., 1994).
Narrative Discourse
Narrative discourse can be defined as a form of language use that describes a sequence
of events (either fictional or nonfictional), usually from the past, that are contingent on another.
Components of a narrative include the setting, a conflict or complication, a climax, and a resolution
(Ulatowska et al., 1990; van Dijk, 1977). Narrative discourse has been sampled by using a number
of visual stimuli including single page images capturing a complete story, multiple pages using
an illustrated childrens book, and framed drawings (i.e., comic strip like) depicting stories that are
either sequentially or non-sequentially arranged (see Table 2 for examples of visual stimuli used
in narrative discourse sampling).
Table 1. Examples of Macrostructure and Microstructure Discourse Measures Used in the RHD
Literature.
Macrostructure Microstructure
Measure Description Measure Description
Lexical
information
units (LIUs)
Content and function words that are
pragmatically, grammatically, and
phonologically appropriate for the
discourse (e.g., Marini, 2012; Marini
et al., 2005)
Total words Sum of total words(e.g., Joanette,
Goulet, Ska, & Nespoluous, 1986;
Sherratt & Penn, 1990)
Main
Concepts/
Steps
Established essential components of
the procedure (e.g., Bartels-Tobin &
Hinckley, 2005; Nicholas &
Brookshire, 1993)
Correct
Information
Units (CIU)
Words that are intelligible in context,
relevant and informative in relation
to stimulus used to elicit discourse
(e.g., Bartels-Tobin & Hinckley,
2005; Nicholas & Brookshire, 1993)
Topic
Skills/
Scenes
Measures of topic skills are variable.
Some studies focus on topic
coherence while others focus on
topic management. See cited
references for details (e.g., Brady,
Armstrong, & Mackenzie, 2003;
Brady, MacKenzie, & Armstrong,
2005; Kennedy, 2000)
T-units Minimal unit of a complete sentence
that contains one independent
clause and a connected dependent
clause (e.g., Joanette, Goulet, Ska, &
Nespoluous, 1986; Sherrat & Penn,
1990)
Turns of
talk
Operationally defined terms used
to describe the type of turn taken or
(e.g., Kennedy, Strand, Burton, &
Peterson, 1994; Minga & Lundgren,
2009; Minga, Lundgren, Brownell,
Cayer-Meade, & Spitzer, 2008)
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In general, adults with RHD are noted to produce narratives that are less informative
(Rivers & Love, 1980). Diminished information has been quantified by reduced complexity and
the exclusion of core propositions when telling the story using an eight-frame drawing depicting
the Cowboy Story (Joanette et al., 1986). Core propositions are defined as expected pieces of
information, as determined by the authors narrative and at least 20% of the study participants.
Bartels-Tobin and Hinckley (2005) found that the narratives of adults with RHD were characterized
by the production of fewer main concepts and the omission of at least two main concepts when a
narrative was produced using a book depicting the story of Cinderella. Main concepts, similar to
core propositions, are defined as concepts present in a percentage of the control group transcripts.
In this instance, the main concepts were used by at least 66% of the control group transcripts.
Differences in the discourse microstructure may not distinguish the narratives of adults
with RHD. For example, narratives may contain just as many words (Joanette et al., 1986; Marini
et al., 2005) or have four times as many words (Sherratt & Penn, 1990) as controls. Narratives
are, however, distinguished by the complexity of the discourse. Reduced complexity may be
demonstrated by the use of empty phrases (Sherratt & Penn, 1990), fewer complex propositions
(Joanette et al., 1986), reduced adjective use (Joanette & Goulet, 1990), and reduced complete
information units (CIUs; Bartels-Tobin & Hinckley, 2005). Additional characteristics may include
difficulty with arranging sentences during the construction of narratives (Delis et al., 1983; Marini
et al., 2005) and an inability to select appropriate story and cartoon endings (Bihrle et al., 1986).
Procedural Discourse
Procedural discourse is used to tell an addressee how to do something. In this way, steps,
usually contingent on one another and chronologically organized, are provided that lead to a
specific goal (Ulatowska et al., 1990; Ulatowska, North, & Macaluso-Haynes, 1981). Successful
production of a procedure, like most discourse genres, requires one to be cognizant of background
knowledge with respect to circumstances of the discourse in use and the information needs of the
listener. Pertinent components of producing procedures include, at a minimum, the identification
of a problem or need, preparatory steps, and the selection of steps needed to successfully conduct
the procedure.
Examinations of procedural discourse in the RHD literature have taken a number of
sampling forms (see Table 3). In general, procedures are sampled in response to requests to describe,
explain, or instruct another person on the process for completing familiar activities of daily living.
Some studies elicit procedures by using the carrier phrase Tell me how you would…” (Sherrat
& Bryan, 2012), while others simply ask for the process. In most instances the appropriateness of
a procedure is measured by the inclusion of essential steps (e.g., Bartels-Tobin & Hinckley, 2005;
McDonald, 2000). Essentials steps are those included in the procedure by more than half of
the control group (McDonald, 2000). This measure is similar to the core propositions and main
concepts used in the analysis of narrative discourse production.
Table 2. Examples of Visual Stimuli for Narrative Discourse Sampling.
Framed Drawings Single Image Books
The Cowboy Story (8 frames;
Joanette et al., 1986)
Cookie Theft (Goodglass
& Kaplan, 1983)
Cinderella (Bartels-Tobin &
Hinckley, 2005)
Bear and the Fly (19 frames;
Winter, 1976)
The Runaway (Rockwell,
1958)
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Procedural discourse performance following RHD may be similar to non-brain-damaged
comparison groups in terms of syntactic complexity, the inclusion of major procedural elements
or steps, and sequencing capabilities (Bartels-Tobin & Hinckley, 2005; McDonald, 2000; Roman
et al., 1987; Sherratt & Penn, 1990). Just as in narrative discourse production, differences
in procedural discourse production have been noted in terms of the informative quality of the
procedure. For example, Sherratt and Penn (1990) found that one adult with RHD produced
more words, incomplete utterances, and indefinite phrases than the non-brain-damaged control.
Other researchers have found that participants with RHD include more personalized or tangential
comments, jokes, opinions, and indefinite terms than non-brain-damaged controls (Gardner,
Brownell, Wapner, & Michelow, 1983; Roman et al., 1987).
Conversational Discourse
While examinations of procedural and narrative discourse are beneficial in furthering our
understanding of communication deficits following RHD, they are not representative of the one
form of communication that permeates all aspects of daily living: Conversation. Conversation
is a discursive, goal-driven, and locally-managed act (Nofsinger, 1991; Wardhaugh, 2006). In
conversation, information may be conceived, modified, and interpreted on a turn-by-turn basis.
Unlike narrative and procedural discourse, the end product is less predictable. This is largely
because effective conversation requires one to adhere to social rules (Clark, 1996; Sacks, Schegloff,
& Jefferson, 1974) that are based on cooperation, assumptions about and shared knowledge with
the conversational partners (Hird & Kirshner, 2003; Kennedy et al., 1994; Kennedy, 2000; Youse,
Gathof, Fields, Lobianco, Bush, & Noffsinger, 2011).
It has proven difficult to sample conversations in a manner that captures the naturalness
of the communicative encounter while controling for extraneous variables that may affect the
discourse production process. Conversational discourse sampling techniques employed in the
RHD literature have a range of structure. Semi-structured conversations and first-encounter
conversations are two elicitation strategies that may be particularly conducive to clinical practice.
Table 3. Procedural Discourse Sampling.
Purchasing
jacket
Teach
someone
to ride a
bike
Changing
tire
Restaurant
dining
Change
Lightbulb
Make
Sandwich
(favorite or
PBJ)
Replacing
glass
window
Bartels-Tobin
& Hinckley
(2005)
**
Brady,
Armstrong, &
MacKenzie
(2005)
**
Sherratt &
Penn (1991)
**
Roman,
Brownell,
Potter, &
Seibold (1987)
**
Sherratt &
Bryan (2012)
*** *
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A semi-structured conversation or a topic-centered interview (Ripich & Terrell, 1988) is
one sampling strategy used in the RHD literature. Elicitation of semi-structured conversations
may be accomplished if the non-brain-damaged conversational partner initiates a topic of
discussion using the carrier phrase, Tell me about.Topic foci of health, family, and daily living
are reported in the literature. Hird and Kirshner (2003) and Brady et al. (2003) used this technique
in their evaluation of conversational discourse in adults with RHD. Less structured sampling has
occurred with the use of first-encounter dyads (Kennedy et al., 1994). In this elicitation strategy,
adults with RHD are asked to get to knowan unfamiliar person during a conversational exchange.
This strategy can be employed in any novel communication setting wherein the communication
partners are unfamiliar.
Investigations suggest that differences in conversational discourse following RHD are
(more often times than not) less obvious when compared to communication deficits following left
hemisphere brain damage. This is not surprising given that macrostructural differences (as
opposed to microstructural) are noted more often during other discourse production tasks. Findings
have resulted in a range of characterizations from laconic to verbose. This range of verbal output
may be related to the cognitive-linguistic idiosyncrasies and variability characteristic of adults
with RHD. Lack of discernment when considering topic choice, an apparent disinterest in
communication partners, and failure to adhere to turn-taking rules are among descriptions
commonly ascribed to the conversational discourse of adults with RHD (Brownell & Martino,
1998; Beeman & Chiarello, 1998; Chantraine et al., 1998; Joanette et al., 1990; Kennedy, 2000;
Myers, 1999; Tompkins, 1995). Some adults with RHD fail to adhere to cues to terminate the
conversation and maintain a topic (Kennedy, 2000), while others do not (Brady et al., 2003;
Kennedy et al., 1994). The resulting speech may consist of fewer requests for information, more
words per turn of talk, and more assertions of facts or opinions when compared to non-brain-
damaged participants (Kennedy et al., 1994; Minga & Lundgren, 2009). Such findings are
commensurate with descriptions of grammatically correct sentences which range from content
deficient to detail heavy, or the inclusion of broadly related but inappropriate information (Sherratt
& Bryan, 2012).
Advancing the Literature
Anecdotal descriptions of discourse behaviors have been useful in aiding clinicians in
their ability to discern differences in the communication of adults with RHD (Blake, 2010).
However, there is a growing need to advance our understanding of, and quantify differences
and changes in discourse production. Clinicians can contribute to this process in three specific
ways. First, clinicians can administer a set protocol of assessments for each RHD referral.
Consistency in assessment administration can serve as a basis of knowledge that may be compared
across patients and, if collaborating with others, clinical settings. A detailed list of possible
cognitive-linguistic assessments commonly used in the assessment of adults with RHD is
provided by Tompkins et al. (2017).
Second, clinicians can examine discourse production before and after skilled treatment.
There is a growing body of evidence-based treatments targeted to improve cognitive-linguistic
and comprehension-based deficits associated with RHD (i.e., Blake, Tompkins, Scharp, Meigh, &
Wambaugh, 2015; Cicerone et al., 2011; Tompkins, Scharp, Meigh, Blake, & Wambaugh, 2012).
Examining discourse production before and after implementing an established treatment approach
can provide invaluable information about the relationship between the quality of discourse
production and other areas of deficit.
The utility of this approach is highlighted by Minga et al. (2008) in their examination of
conversational discourse production of one person after participation in the Metaphor Training
Program (MTP; Lundgren et al., 2011). Briefly, the MTP is a 5-week, semi-structured intervention
targeted to improve the comprehension of novel metaphors. As part of the protocol, first-encounter
conversations were elicited before and after MTP participation. Each conversation was analyzed
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using the Discourse Contribution Measure (DCM; Minga & Lundgren, 2011), a measure consisting
of nine operationally defined parameters that describe the type of turn used to contribute to
a conversation. Findings showed that discourse production, at the conversational level, was
different after participation in the MTP. The participant appeared to take a more active role
in the conversation by contributing more questions, novel information, and topic appropriate
elaborations after completing the training program.
Lastly, clinicians may choose to participate in the systematic collection of discourse
samples and survivor demographics; thereby, contributing to a larger body of data. There are
at least two resources for doing this: (a) The RHDBank and (b) The Right Brain Stroke Research
Registry (RBSRR). The RHDBank, a new shared database extension of TalkBank, provides
an established protocol that clinicians can use to elicit discourse samples from adults with RHD
(Talk Bank, n.d.). Clinicians can access and use the RHD Discourse Protocol when treating
clients with RHD. Provided that proper institutional review board approval is received, clinicians
may also contribute samples to the database. The Right Brain Stroke Research Registry (RBSRR)
is the only known registry dedicated to RHD (a webpage is forthcoming, contact the author for
more information). The purpose of the registry is to identify adults 18 years and older with RHD
who are interested in research participation opportunities. To date, the registry has survivors
residing in five states. Registry participants comprise an accessible pool of possible research
participants for dedicated studies and the collection of demographic information needed to
determine incidence and prevalence of cognitive-communication related impairments in adults
with RHD. Clinicians may provide the registry information to adults with RHD so that they may
self-identify as a registry participant volunteer.
Conclusion
Understanding discourse production following RHD remains a needed area of research,
particularly as it relates to evidence-based assessment and treatment. Published articles focused
on discourse production following RHD are scant resulting in knowledge restricted to fairly
anecdotal descriptions of behaviors. Variability and inconsistency of measures and terminology
coupled with the threat of extraneous variables have undoubtedly contributed to the research
stagnancy and clinical challenge of determining the functional significance of communication
changes. Adults with RHD may have no difficulty with the construction of syntactically,
grammatically, and semantically congruent sentences, but can lack the ability to tie sentences
together in an appropriate, cohesive, and coherent fashion. Clinicians as researchers can serve to
advance the literature by delineating the relationship between nebulous clinical indicators and
functional discourse production behaviors (Weed, 2011; see Tompkins, Scott, & Scharp, 2008
for information about the clinician as an investigator) by choosing to administer the same
assessments, engaging in the systematic collection of discourse samples, and electing to examine
the discourse of adults with RHD before and after skilled treatment. Collectively, these efforts can
generate large samples of data that may foster comparisons of information across clinical settings
and advance the RHD discourse production literature.
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History:
Received February 04, 2016
Revised May 20, 2016
Accepted May 20, 2016
doi:10.1044/persp1.SIG2.96
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... The RH group, as a whole, albeit producing more words and utterances, produced less informational content; they also produced more tangential/incongruent utterances than controls. Data reported in the literature regarding microlinguistic aspects of discourse is conflicting: subjects with RH lesions may produce narratives with as many or more words than controls [26,27]. Our study reproduced these findings in that RH patients produced more words and utterances (leading to similar MLUs) than controls. ...
... In our study, the RH group showed a lower percentage of lexical information (indicating lower and less relevant content by number of words) and a higher percentage of global coherence errors (indicating the presence of tangential and non-pertinent utterances); these findings match those reported by other authors [25,27,31]. Contrary to many previous reports, individuals with RH damage could adequately report the main concepts (thematic units) [14,26,27,30]. Main concepts or core propositions are pieces of information that are expected to be delivered and are determined, for instance, by their consistent presence in the narratives of the majority of controls [26]. ...
... Contrary to many previous reports, individuals with RH damage could adequately report the main concepts (thematic units) [14,26,27,30]. Main concepts or core propositions are pieces of information that are expected to be delivered and are determined, for instance, by their consistent presence in the narratives of the majority of controls [26]. ...
Article
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Background Cognitive-communication disorder (CCD) results from the association of language and cognition impairment that may follow right hemisphere (RH) damage and impair the quality of life of affected persons. Objective We studied a set of 1,625 narratives produced by a cohort of 125 individuals (50 with a single right vascular lesion in the MCA territory and 75 cognitively healthy controls) using a task of picture-based discourse production. Discourse production was analyzed in its macro-and microlinguistic aspects to characterize better the linguistic mechanisms underlying RH patients' performance. Results The RH group produced more words and elocutions than controls, with a lower rate of informational content and a higher percentage of global coherence errors (all p-values <0.0001). Conclusion Individuals with RH lesions showed formal lexical and syntactic aspects of discourse mostly preserved. Alterations in the macrostructure of discourse prevailed over microstructural alterations in our sample, according to most literature studies. The group of individuals with RH lesions produced narratives containing more words and utterances, with a lesser degree of lexical information and more global coherence errors.
... Deficits in executive functioning may contribute to increased verbosity, tangentiality, impulsivity, focusing on irrelevant details, and thought disorganization in conversation. 5,24 A combination of cognitive deficits can also limit understanding of abstract or figurative language, including information that can be interpreted in many ways requiring mental flexibility. This further can contribute to difficulty making inferences or understanding macrostructure components of conversations, such as the over overall topic or "big picture" of discussions. ...
... They can have challenges conveying the main points of narratives and images (Bartels-Tobin & Hinckley, 2005), include tangential or irrelevant information (Marini, 2012) and omit structural elements important to the organization of the story (Karaduman et al., 2017;Stockbridge et al., 2019). Together these production deficits result in narratives that are disorganized and devoid of the global message that is at the core of the discourse task (see Minga, 2016, for a review). Consider the following excerpt from Minga42 (Timestamp: 13:16-15:0) completing the Cat Rescue task of the RHDBank protocol. ...
Article
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Background: Right hemisphere communication disorders are neither consistently labelled nor adequately defined. Labels associated with right hemisphere brain damage (RHD) are broad and fail to capture the essence of communication challenges needed for stroke-related service provisions. Determination of rehabilitation needs and best-practice guidelines for the education, management and functional improvement of communication disorders after RHD are all predicated on an apt diagnostic label and disorder characteristics. Aims: In this paper apragmatism is proposed as a potential communication-specific diagnostic label for the impairments in communication that occur after RHD. In particular, the researchers aimed: (1) to establish an operational definition of apragmatism; and (2) to describe the linguistic, paralinguistic and extralinguistic communication deficits under the umbrella term apragmatism. Methods & procedures: An international collaborative of researchers with expertise in RHD followed a multilevel approach to consider the utility of apragmatism as a diagnostic label. Adopting the relational approach to concept mapping, the researchers engaged in a series of group meetings to complete four levels of mapping: (1) identify and review, (2) define, (3) expert discussion and (4) label determination. Main contribution: Apragmatism was established as a suitable diagnostic label for the impairments in communication associated with RHD. The paper offers an operational definition and description of the linguistic, paralinguistic and extralinguistic features of apragmatism through evidence summaries and examples from people with RHD retrieved from the RHDBank. Conclusions & implications: The adoption of the term apragmatism offers an opportunity to capture the hallmark of RHD communication deficits. The use of the term is recommended when referencing the pragmatic language impairments in this population. Apragmatism, which may co-occur with or be exacerbated by cognitive impairments, can interfere with the ability to interpret and convey intended meaning and impact the lives of right hemisphere stroke survivors and their families. What this paper adds: What is already known on the subject RHD results in a heterogeneous group of deficits that range in cognitive-communicative complexity. Many of the deficits are subsumed under pragmatics. For example, adults with RHD may demonstrate tangential or verbose communication, insensitivity to others' needs and feelings, prosodic changes, minimal gesture use and facial expression, and more. While descriptions of pragmatic impairments pervade the literature, there is no consistently used diagnostic label. The clinical consequences of this absence include difficulty with inter- and intra-disciplinary communication about these patients, difficulty consolidating findings across research studies, and challenges in communicating about these pragmatic changes with patients, families and other stakeholders. What this paper adds to existing knowledge The term apragmatism is proposed as a diagnostic label to consistently describe pragmatic communication changes after RHD. Apragmatism is characterized using three components of pragmatics: linguistic, paralinguistic and extralinguistic. Descriptions and examples of these three components are provided with supplemental transcripts retrieved from the RHDBank. What are the potential or actual clinical implications of this work? Adoption of the term apragmatism by speech and language therapists and other medical and rehabilitation professionals has the potential to provide consistency in describing the abilities and challenges experienced by people following a right hemisphere stroke. Such improvements may help drive the development of evidence-based assessments and treatments for this population.
... Rating procedural discourse and discourse comprehension (implied meaning) were also ranked highly. Evidence for deficits in procedural discourse in individuals with RH stroke is limited (Minga, 2016); however, this task is commonly included in informal screening processes, and therefore may be considered a familiar or routine task by the expert speech-language pathologists rather than a task that should be included based on available evidence. The suppression deficit hypothesis would support the inclusion of a test item related to discourse comprehension as individuals with RH stroke may present as lacking capacity for effective meaning selection and integration in discourse tasks (Tompkins et al., 2001). ...
Article
Background: Early recognition of stroke signs and symptoms is critical to ensure people receive the right treatment at the right time. Communication impairment associated with left-hemisphere stroke is easily identifiable due to the recognisable signs of aphasia, whereas signs of cognitive-communication disorder (CCD) after right hemisphere (RH) stroke are often subtler. In contrast to aphasia, no sensitive screening tools exist to allow for early identification of CCD after RH stroke. Aims: To prioritise test items required for a screening tool to identify CCD after RH stroke from the perspective of expert speech-language pathologists. Methods & Procedures: The nominal group technique (NGT) was used with expert speech-language pathologists to determine the most important test items required for a screening tool to identify RH CCD. Results were analysed using a quantitative measure of item ranking and inductive content analysis. Outcomes & Results: Five expert speech pathologists located across Australia and the USA, representing a mix of clinicians and researchers participated in the nominal group. The highest ranked test items across the four cognitive-communication domains (lexical semantics, discourse, pragmatics and prosody) were interpretation of sarcasm or humour, rating conversational discourse, a conversational skills checklist, and expressive prosody. Content analysis revealed three themes: Assessment Domains, Considerations in Item Design and Knowledge Gap. Conclusions: The NGT revealed that multiple considerations exist in developing a screening tool for CCD after RH stroke.
... In the absence of a theoretical structure, the current understanding of discourse revolves around descriptions of linguistic and extralinguistic aspects of production that are more or less likely to be affected after RHD. For example, both microlinguistic (e.g., syntax, morphology, and lexical semantics) and macrolinguistic (e.g., global coherence [GC], productivity, content, and appropriateness) aspects of language can be affected, but these deficits may vary with respect to prominence (e.g., see Blake, 2018, andMinga, 2016, for a review; Balaban et al., 2016;Blake, 2003;Sherratt & Byran, 2012) both within and across individuals and no consistent patterns of occurrence have been reported. Extralinguistic features (e.g., gestures, body language, and eye contact) are also commonly affected after RHD (see review in Blake, 2018;Parola et al., 2016), but the limited scientific inquiry of these aspects in relation to discourse prevents any more specificity in describing the deficits. ...
Article
Purpose: Right hemisphere brain damage (RHD) commonly causes pragmatic language disorders that are apparent in discourse production. Specific characteristics and approaches to assessment, diagnosis, and treatment of these disorders are not well-defined. RHDBank, a shared database of multimedia interactions for the study of communication using discourse, was created to address these gaps. The database, materials, and related analysis programs are free resources to clinicians, researchers, educators, and students. Method: A standard discourse protocol was developed to elicit multiple types of discourse: free speech, conversation, picture description, storytelling, procedural discourse, and question-asking. Testing included measures of cognition, unilateral neglect, and communicative participation. Language samples were video-recorded and transcribed in CHAT format. Currently, the database includes 24 adults with RHD and 24 controls. Results: Illustrative analyses show how RHDBank can facilitate research using micro- and macrolinguistic discourse analysis techniques both within this population and across populations. Educational resources, such as the Grand Rounds tutorial, were developed using case studies from the database. Conclusions: RHDBank is a shared database of resources that can facilitate educational and research efforts to address the gaps in knowledge about RHD communication and improve the clinical management of individuals with RHD.
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Narrative discourse is investigated in clinical and healthy populations. This study explored the discourse strategies used to tell stories, comparing the patterns of people with left- and right-hemisphere brain damage, as well as healthy speakers. We analyzed picture-elicited discourses by four people with aphasia, two people with right hemisphere damage, and four healthy speakers. We examined their microlinguistic properties, as well as macrolinguistic features, such as the discourse production type of utterances and patterns of story component usage. We identified two storytelling strategies used by the speakers: a narrative strategy marked by a prevalence of narrative discourse production type utterances and scarce use of evaluation clauses, and a quasi-narrative strategy with the opposite pattern. These strategies were used by both healthy speakers and participants with brain damage
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Background: The Consolidated Framework for Implementation Research (CFIR) was developed to merge research and practice in healthcare by accounting for the many elements that influence evidence-based treatment implementation. These include characteristics of the individuals involved, features of the treatment itself, and aspects of the organizational culture where the treatment is being provided. Aims: The purpose of this study was to apply the CFIR to a measurement of current practice patterns of speech-language pathologists (SLPs) working in the skilled nursing facility (SNF) environment. In an effort to inform future evidence-based practice implementation interventions, research questions addressed current practice patterns, clinician treatment use and preferences, and perceptions of the organizational context including leadership, resources, and other staff. Methods and procedures: Surveys were mailed to each SLP working in a SNF in the state of Michigan. Participants (N=77, 19% response rate) completed a survey mapping on to CFIR components impacting evidence-based practice implementation. Quantitative descriptive and nonparametric correlational analyses were completed. Outcomes and results: Use of evidence-based treatments by SLPs in SNFs was highly variable. Negative correlations between treating speech and voice disorders and treating swallowing disorders (rs=-.35, p<.01), evaluating language and cognitive-communicative disorders and treating swallowing disorders (rs=-.30, p<.01), treating language and cognitive-communicative disorders and treating swallowing disorders (rs=-.67, p<.01), and evaluating swallowing disorders and treating language and cognitive-communicative disorders (rs=-.37, p<.01) were noted. A positive correlation between the SLPs' perception of organizational context and time spent evaluating language and other cognitive-communicative disorders (rs=.27, p<.05) was also present. Conclusions: Associative data suggest that the more an SLP in the SNF evaluates and treats swallowing disorders, the less he or she will evaluate speech, voice, language or other cognitive-communicative disorders. Further, SLPs in this sample spent more time evaluating language and cognitive-communicative impairments if they perceived their organizational context in a more positive way. The CFIR may guide treatment and implementation research to increase the uptake of evidence-based practices for SLPs working in the SNF setting.
Chapter
Current interest in discourse performance has been motivated by the explanatory power provided by recent developments in discourse grammar. Discourse, unlike sentences, does not have a strict set of rules that specify grammaticality. Nor does discourse have a specified length. Although discourse is often described as a series of connected sentences, it may be a single word, a phrase, a sentence, or an infinite combination of all these forms. The length is specified in terms of communicative function (i.e., discourse is a unit of language that conveys a message). Discourse grammar provides a linguistic description of the properties that contribute to acceptability or well-formedness of discourse. There are several discourse types (e.g., narrative, procedural, expository, and conversational) that differ in structure and information content.
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It has been argued that the macrostructural organization of a text is central to comprehension and retention of discourse. In a recognition experiment, some aspects of the macro-structural representation have been investigated. The results give some preliminary support to the Roter Faden model (Glowalla, 1981). In addition, a quantitative model capturing some features of macrostructure search is outlined.