Serum testosterone levels in male and female subjects with standard and anomalous dominance

Abstract

Serum testosterone levels were determined in female and male subjects. Hand preference was assessed by the Edinburgh Handedness Inventory. Subjects with anomalous dominance (left-handers, mixed-handers, and right-handers with familial sinistrality) were compared to subjects with standard dominance (righthanders without familial sinistrality). The mean serum testosterone levels were found to be signficantly higher in subjects with anomalous dominance than those with standard dominance. It was concluded that the results are in accord with the testosterone hypothesis of cerebral lateralization.

Key Words:

• testosterone
• hand preference
• dominance
• female
• male