The Good, the Bad, and the Tiny. No, she's not the love of your life. Neuroanatomists have documented such sexual dimorphism in brains since the early s. Sex and the Brain will show students how a scientific paper can be analyzed from many perspectives, and supply them with critical tools for judging a rapidly emerging science in a contentious area. There's a human dimension to it that also needs to be addressed. One study found that people who'd just had sexual intercourse had better responses to stressful situations like public speaking than people who had not, or who had engaged in other types of sexual activity. It's not entirely rational, but a lot of gay men are propelled into activism as a result of their experiences with AIDS.