Complementary
To hear this term is to presume something positive. It implies that things fit with one another, get along, are nice.
Yet in the field of psychology, complementary behavior may not always be as helpful as it sounds. It means you respond back to someone in the same way they did to you. For example, if someone yells at you, you yell at them.
By comparison, non-complementary behavior is responding to someone in a different way from which they acted towards you. …