Self-reported cognitive and everyday functioning in persons with psychosis: the Patient Perception of Functioning...

Area of Science:

• Psychiatry
• Psychology
• Neuroscience

Background:

• Assessing patient functioning is crucial in managing psychotic disorders.
• Brief, face-valid self-report measures are needed for subjective functioning assessment.
• The Patient Perception of Functioning Scale (PPFS) was developed for this purpose.

Purpose of the Study:

• To evaluate the reliability and validity of the Patient Perception of Functioning Scale (PPFS).
• To assess the PPFS's correlation with neurocognitive and clinical measures in psychotic disorders.

Main Methods:

• Sixty-eight individuals with psychotic disorders completed the PPFS twice.
• Neurocognitive tests and objective functioning/severity ratings were administered.
• Psychometric properties of the PPFS were analyzed.

Main Results:

• The PPFS demonstrated good internal consistency and test-retest reliability.
• PPFS scores correlated significantly with community functioning measures.
• No significant associations were found between PPFS and neurocognitive measures or clinical status.

Conclusions:

• The PPFS is a reliable tool for assessing self-reported community functioning in psychotic disorders.
• Convergent validity with objective cognitive measures was poor, potentially due to methodological factors.
• Discrepancies may arise from differing conceptualizations of cognitive constructs between patients and neuropsychological instruments.