Related Experiment Video
Updated: Aug 13, 2026
05:22
Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies
Published on: May 9, 2019
Semantic factors in verb retrieval: an effect of complexity
S D Breedin1, E M Saffran, M F Schwartz
1Department of Psychology, University of North Carolina at Charlotte, Charlotte, NC 28223-0001, USA.
Brain and Language
|June 27, 1998
Summary
Aphasic patients show a selective impairment in verb retrieval. Semantically complex verbs are easier for most aphasic patients to recall than simpler verbs, challenging existing theories.
Area of Science:
- Neuroscience
- Psycholinguistics
- Speech and Language Pathology
Background:
- Aphasic patients frequently experience greater difficulty with verb retrieval compared to noun retrieval.
- This phenomenon suggests a potential selective impairment in verb processing within the language network.
Purpose of the Study:
- To investigate the selective impairment of verb retrieval in aphasic patients.
- To explore the influence of semantic complexity on verb retrieval accuracy.
Main Methods:
- Data collected from eight aphasic patients.
- A delayed repetition/story completion task was employed to assess verb retrieval.
- Semantic complexity was operationalized by the number of semantic features associated with verbs.
Main Results:
- Six out of eight aphasic patients demonstrated better retrieval of semantically complex verbs (e.g., 'run') than semantically simpler verbs (e.g., 'go').
- This finding supports a selective deficit in verb retrieval.
Conclusions:
- The study provides evidence for a selective impairment in verb retrieval among aphasic individuals.
- Semantic complexity plays a significant role in verb retrieval, impacting theories of noun-verb dissociation and verb representation in the brain.
Related Concept Videos
01:08The Availability Heuristic
A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):
01:27Language and Cognition
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
01:23Storage
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
01:12Retrieval
Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
01:07Elaborative Rehearsals
Elaborative rehearsal is a crucial cognitive strategy that strengthens information encoding in long-term memory by making meaningful connections between new data and pre-existing knowledge. This approach contrasts with maintenance rehearsal, which involves simple repetition without delving into the significance of the information. While maintenance rehearsal might temporarily keep information active in short-term memory, it is less effective for long-term retention.
The effectiveness of...
The effectiveness of...
01:30Impact of Schemas
Schemas are cognitive structures that provide a framework for interpreting and organizing social information. They help individuals navigate complex environments by offering expectations about people, events, and behaviors. Schemas influence attention, encoding, and retrieval processes, thereby shaping the entire trajectory of information processing in social contexts.Attention and Cognitive LoadDuring initial attention, schemas function as filters that prioritize schema-consistent information,...