A psychological approach that denies the relevance of consciousness for the understanding of human behaviour. It aims at the totally objective study of human behaviour. Based on the work of John Watson, Behaviorism, 1913. ( http://uts.cc.utexas.edu/~kensicki/watson-behav.html). Education examples include competency-based education and skill development.
An approach to changing behaviour based on the assumption that you can never satisfactorily understand people's behaviour. It therefore seeks to change that behaviour without understanding where it comes from. Developed in the 1930s mostly by B. F. Skinner, it remains one of the dominant approaches to managing behaviour in UK psychology.
The school of psychology associated with John B. Watson, who proposed that observable behaviour, not consciousness, is the proper subject matter of psychology. Currently, many who consider themselves behaviourists do use mediational concepts, provided they are firmly anchored to observables.