The foot-in-the-door technique is to the commitment and consistency principle as the door-in-the-face technique is to the _____________

These three phenomena, LTP, LTD, and associative LTP, all illustrate the expression "cells that fire together ___ together."

Fill in the blank(s) with the appropriate word(s).

Which of the following statements about mate selection is true?

A) Romantic love is rarely an important factor in mate selection. B) Little support exists for the idea that "opposites attract." C) People rarely select partners that resemble themselves. D) Partners who are similar in personality tend to be less satisfied with their relationship.