Sex differences in visuospatial abilities persist during induced hypogonadism.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Endocrinology

Background:

• Established sex differences exist in cognitive domains like visuospatial ability.
• Few studies have investigated these differences during both hormonal presence and suppression.
• Hormone-independent differences may reflect developmental or genetic factors.

Purpose of the Study:

• To evaluate cognitive performance in healthy men and women.
• Assess performance before and during gonadotropin-releasing hormone (GnRH) agonist-induced hypogonadism.

Main Methods:

• 16 men and 15 women, matched for IQ, underwent cognitive testing.
• Testing occurred at baseline (eugonadal) and after 6-8 weeks of GnRH agonist treatment.
• Cognitive tests measured verbal/spatial memory, spatial ability, verbal fluency, motor skills, and attention.

Main Results:

• Men significantly outperformed women in visuospatial tasks during both eugonadism and hypogonadism.
• Observed visuospatial advantages included mental rotation and complex figure drawing.
• Some performance improvements during hypogonadism were likely due to practice effects.

Conclusions:

• The male advantage in visuospatial performance persists despite short-term gonadal suppression.
• Sex differences in visuospatial skills are not solely dependent on the current sex steroid environment.
• These findings support the role of early developmental or other environmental factors in sex differences in visuospatial ability.