Fear Extinction in the Shock Context. (A) Freezing during CFC and extinction training (Female n = 23, Male n = 24). (B) Number of Crossings in the Shock Arm during CFC (Female n = 23, Male n = 23) and extinction training (Female n = 23, Male n = 24). One video from the Male group during CFC was corrupted, and we could not report crossings for that animal. *p < 0.05, #p < 0.05 for Females versus Males on day 1 of Extinction in the Shock Context.