Psychology using sex difference as basis
MAINLY FEMALE, MAINLY SEXUAL SIGNALS
This summary is similar to that in All About Women: What Big Sister Doesn’t Want You to Know. Sexual signals are given particular emphasis in the Procedural Analysis system because their evolutionary viability is obvious. Each of these signals is advantageous (it has a reason to exist, being employed to attract a mate) and heritable (has a means to exist, capable of being passed on to the progeny resulting from that union).