It's more believable that a hormone would work across all social situations than a few specific ones. It's easier for a hormone to have a broad effect than a na

It's more believable that a hormone would work across all social situations than a few specific ones. It's easier for a hormone to have a broad effect than a narrow one. A narrow effect requires a much finer tuning of the neural circuits' reaction to the presence of the hormone. But there's a massive scientific literature on the effect that testosterone has on both human and animal behavior, so you don't need an anecdote from people who take testosterone to come to a similar conclusion.