Is cognitive adaptation training (CAT) compensatory, restorative, or both?

Area of Science:

• Psychiatry
• Neuroscience
• Rehabilitation Psychology

Background:

• Schizophrenia is characterized by cognitive deficits impacting functional outcomes.
• Cognitive adaptation training (CAT) utilizes environmental supports to mitigate these deficits.
• The relationship between CAT, cognitive function, and functional outcomes requires further investigation.

Purpose of the Study:

• To determine if cognitive function mediates the effect of CAT on functional outcomes in schizophrenia.
• To assess the impact of CAT on cognitive test performance over time.
• To explore the bidirectional relationship between cognitive and functional improvements.

Main Methods:

• A randomized controlled trial involving 120 participants with schizophrenia.
• Comparison of three groups: CAT, generic environmental supports, and treatment as usual (TAU).
• Assessment of cognition and functional outcomes at baseline, 9 months, and 24 months using mediation analyses and mixed-effects regression.

Main Results:

• CAT significantly improved functional outcomes compared to generic supports and TAU within the first 9 months.
• Cognitive function did not mediate the improvements in functional outcomes during the initial 9 months.
• At 24 months, CAT participants showed greater cognitive improvement, and functional improvements positively influenced cognitive performance.

Conclusions:

• Cognitive improvement is not a prerequisite for functional gains in schizophrenia patients undergoing CAT.
• Enhanced engagement in functional behaviors through CAT positively impacts cognitive function.
• CAT is an effective intervention for improving functional outcomes in schizophrenia, with cognitive benefits emerging over time.