While a few different schools of thought dominated the early years of psychology, the number of topics studied by psychologists has grown dramatically since the early 1960s. Today, few psychologists identify their outlook according to a particular school of thought. While you may still find some pure behaviorists or psychoanalysts, the majority of psychologists instead categorize their work according to their specialty area and perspective.
Every topic in psychology can be looked at in a number of different ways. For example, let’s consider the subject of aggression. Someone who emphasizes a biological perspective would look at the how the brain and nervous system impact aggressive behavior. A professional who stresses a behavioral perspective would look at how environmental variables reinforce aggressive actions. Another psychologist who utilizes a cross-cultural approach might consider how cultural and social influences contribute to aggressive or violent behaviors.