Gender differences in immediate memory in bipolar disorder.

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Bipolar disorder (BD) severity and clinical course are known to be modulated by gender.
• Cognitive abnormalities are a recognized feature of BD, yet gender's influence on cognitive impairment patterns and severity remains under-investigated.

Purpose of the Study:

• To investigate gender-specific differences in cognitive functioning among patients with bipolar disorder type 1 (BD-I).
• To explore the relationship between cognitive performance, illness severity, and gender in BD-I.

Main Methods:

• Cognitive performance was assessed in 86 remitted BD-I patients (36 male, 50 female) and 46 healthy controls (21 male, 25 female).
• Evaluated functions included general intellectual ability, memory (encoding, recognition, retrieval), response inhibition, and executive functions (abstraction, perseveration).
• Illness severity was measured using the Global Assessment of Functioning (GAF) scale.

Main Results:

• A significant gender effect and diagnosis-by-gender interaction were observed for immediate memory, specifically in encoding and retrieval processes.
• Male BD-I patients demonstrated poorer performance compared to female BD-I patients and healthy controls.
• Immediate memory performance correlated with GAF scores, notably in male BD-I patients.

Conclusions:

• Gender differences in BD-I are linked to memory function, particularly encoding and retrieval.
• These memory deficits in male BD-I patients may contribute to poorer functional outcomes.
• Findings highlight the importance of considering gender in the assessment and management of cognitive deficits in bipolar disorder.