Impaired conditional task performance in a high schizotypy population: relation to cognitive deficits

Area of Science:

• Cognitive Neuroscience
• Psychiatry
• Behavioral Psychology

Background:

• Schizophrenia is associated with cognitive impairments, particularly in using task-setting cues for behavior.
• These deficits may be more pronounced when cues signal different responses to the same stimuli.

Purpose of the Study:

• To investigate cognitive performance in individuals with varying schizotypy scores on tasks requiring task-setting cues.
• To differentiate performance on biconditional discrimination from a control task lacking cue requirements.

Main Methods:

• Assessed participants with high and low schizotypy scores on a biconditional discrimination task.
• Compared performance on the biconditional task with an equivalent control discrimination task.
• Utilized the Mason, Claridge, & Jackson (1995) schizotypy questionnaire, focusing on the Introvertive Anhedonia subscale.

Main Results:

• Participants with high Introvertive Anhedonia scores performed significantly worse on the biconditional discrimination task.
• Performance on the control discrimination task was not affected by Introvertive Anhedonia scores.
• Other schizotypy subscales did not show significant effects on either task.

Conclusions:

• High introverted anhedonia, a facet of schizotypy, is linked to deficits in using task-setting cues for behavioral control.
• This finding supports the role of task-setting cue deficits in the cognitive impairments seen in schizophrenia.