Cognitive functioning in adolescents with schizophrenia spectrum disorders.

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Limited research exists on cognitive functioning in adolescents with schizophrenia spectrum disorders compared to adults.
• Schizophrenia spectrum disorders present significant challenges to cognitive processing.

Purpose of the Study:

• To investigate and compare cognitive functioning in adolescents diagnosed with schizophrenia spectrum disorders versus healthy adolescents.
• To identify specific cognitive domains most affected in adolescent schizophrenia spectrum disorders.

Main Methods:

• A comparative study involving 22 adolescents with schizophrenia spectrum disorders and 30 healthy adolescents.
• Assessment of various cognitive functions including executive function, psychomotor speed, sustained attention, preattentional processing, visual and auditory memory, and working memory.

Main Results:

• Adolescents with schizophrenia spectrum disorders exhibited impaired performance across most cognitive functions, with the exception of sustained attention.
• Executive function and psychomotor speed were the most significantly impaired cognitive domains.
• Relative cognitive deficits were observed in preattentional processing, early visual processing, visual long-term memory, auditory short-term memory, and working memory.

Conclusions:

• Adolescents with schizophrenia spectrum disorders display a cognitive functioning pattern largely consistent with adults with schizophrenia.
• Sustained attention appears to be a cognitive area spared in adolescent schizophrenia spectrum disorders, unlike other domains.
• These findings highlight the pervasive impact of schizophrenia spectrum disorders on cognitive development during adolescence.