With few exceptions, most people can easily be identified as male or female. This identification is typically assumed to imply certain characteristics. Women, for example, are typically assumed to be more “emotional”. Men are typically assumed to be more “athletic”. Given the assumption these are, at best, broad generalizations, is there nonetheless some truth in the generalizations? To the extent that there is truth in some of the generalizations, how might we account for that element of truth? Are the differences in any sense “hard-wired”, or are they somehow “acquired”? If there are differences, to what extent should they matter?