In the auditory task, theta power in females was greater than males at age 25 at all locations, with the difference between male and female power between 35% and 45% of the combined mean decrease from age 12 to age 25. In the visual task, theta power in females was greater than males at age 25 at all locations, with the difference between male and female power about 35% of the overall decrease from age 12 to age 25.