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Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
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Intraverbal Assessment for Persons with Aphasia or Other Acquired Brain Injury.

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  • 1Esch Behavioral Consultants LLC, PO Box 20002, Kalamazoo, MI 49019 USA.

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This study assessed intraverbal skills in older adults with aphasia, finding that complex questions weakened verbal performance. A new assessment model is proposed, differentiating rehabilitation from habilitation needs for language recovery.

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AphasiaBrain injuryLanguage skillsSpeechStimulus control

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Area of Science:

  • Behavioral Psychology
  • Neuroscience
  • Speech-Language Pathology

Background:

  • Aphasia often results in disrupted verbal behavior, impacting communication in older adults.
  • Understanding error patterns in aphasia is crucial for developing effective interventions.
  • Skinner's functional analysis of verbal behavior provides a framework for assessing language deficits.

Purpose of the Study:

  • To administer an intraverbal assessment to older adults with aphasia.
  • To analyze error categories for stimulus control and identify key assessment components.
  • To propose a new intraverbal assessment model for aphasia rehabilitation.

Main Methods:

  • An intraverbal assessment using a hierarchy of questions with increasing complexity was administered.
  • Five categories of errors were defined and analyzed for stimulus control.
  • Data were analyzed to identify patterns in verbal discriminative stimulus control.

Main Results:

  • Evocative control was evident in four of five error categories.
  • Increased complexity in intraverbal stimulus control questions led to weaker verbal performance.
  • A proposed 9-point intraverbal assessment model is based on functional analysis.

Conclusions:

  • Aphasia rehabilitation requires tailored interventions, distinct from habilitation for developmental disorders.
  • The proposed assessment model can inform more efficient and effective treatment strategies.
  • Future research should explore thematic topics for aphasia intervention.