This study investigated the effects of stimuli that vary in erotic content on performance during a choice reaction time (CRT) task. Eighty subjects, 20 from each of four groups—heterosexual men, heterosexual women, gay men, and lesbian women—completed the study. Participants were required to locate the position of a dot on slides of nude and clothed men and women as well as neutral stimuli as rapidly as possible. It was hypothesized that sexual interest would influence cognitive processes and cause longer latencies to preferred‐gender stimuli. Subjects also completed an incidental learning task to determine if a relationship existed between stated sexual orientation and memory for stimuli. Results indicate that reaction times were longest with nude stimuli of the preferred gender for each group. The nude stimuli had the highest accuracy rate for correctly classifying groups based on sexual orientation with the possible exception of heterosexual women. Results for clothed stimuli on the CRT task were similar but not as strong. Results of the incidental learning task indicate that participants had the greatest memory for nude preferred‐gender stimuli. The data indicate that sexual interest in a stimulus may cause distraction during performance of a cognitive task but may facilitate memory for the stimulus during a memory task.