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Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
Published on: November 19, 2014
Metaphor processing in high and low schizotypal individuals.
Megan K Humphrey1, Frances M Bryson, Gina M Grimshaw
1School of Psychology, Victoria University of Wellington, Wellington, New Zealand.
Psychiatry Research
|May 25, 2010
Summary
Individuals with high positive schizotypy did not differ in metaphor processing ability compared to low schizotypy groups. However, high schizotypy individuals showed a less conservative response bias in judging statement appropriateness.
Area of Science:
- Cognitive Psychology
- Psychopathology
- Neuroscience
Background:
- Schizotypy shares traits with schizophrenia, suggesting potential language processing deficits.
- Positive schizotypy is linked to right hemisphere biases, potentially enhancing certain cognitive functions like metaphor processing.
Purpose of the Study:
- To investigate the relationship between positive schizotypy and metaphor comprehension.
- To test two competing hypotheses regarding metaphor processing in high schizotypal individuals.
Main Methods:
- A story completion task was used to assess metaphor processing.
- Participants (30 high, 29 low schizotypal) judged the appropriateness of literal and metaphoric statements.
Main Results:
- No significant difference was found between high and low schizotypal groups in discriminating appropriate from inappropriate statements.
- High schizotypal individuals exhibited a less conservative response bias, more readily accepting statements as appropriate.
Conclusions:
- The study's findings challenge existing hypotheses on schizotypy and metaphor processing.
- Results suggest language processing in schizotypy may be more nuanced than previously assumed, particularly concerning response bias.
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