Episodic memory retrieval is impaired in negative schizotypy under fast response deadline

Area of Science:

• Cognitive Psychology
• Psychiatry
• Neuroscience

Background:

• Schizotypy, a multidimensional framework, helps understand schizophrenia-spectrum psychopathology.
• Young adults with positive and negative schizotypy traits show milder versions of schizophrenia symptoms.
• Previous research links negative schizotypy to memory impairments (free-recall, recognition, source memory), possibly due to context processing deficits.

Purpose of the Study:

• To examine the association between positive and negative schizotypy and the set-size effect under varying response deadlines.
• To further investigate memory retrieval differences across the schizotypy continuum.

Main Methods:

• Assessed positive and negative schizotypy traits in non-clinically ascertained young adults.
• Evaluated memory performance, including free-recall, recognition, source memory, and set-size effect, under fast and slow response deadlines.
• Analyzed omission errors in a cued-recall task.

Main Results:

• Replicated the finding that the set-size effect is invariant across positive and negative schizotypy.
• Negative schizotypy correlated with poorer overall recall.
• A significant interaction showed negative schizotypy was more impaired by speeded responding, impacting overall memory.
• Negative schizotypy increased omission errors, while positive schizotypy decreased them.

Conclusions:

• Findings support the multidimensional model of schizotypy.
• Negative schizotypy is associated with impaired memory retrieval, especially under time constraints.
• Response deadlines differentially impact memory performance in individuals with negative schizotypy traits.