Making the world better, one answer at a time. Deodorant was around in ancient times but modern day deodorant was invented in 1888 by an inventor in Philadelphia, Pennsylvania.
Behavioral observations are a key component of cognitive psychology. Behavioral observations give cognitive psychologists a means of testing and evaluating theories about behaviors and a means of testing any predictions about those behaviors.
Psychology Definition of BEHAVIOR: n. an action, activity, or process which can be observed and measured. Often, these actions, activities, and processes are initiated in response to stimuli which are either internal or external. The results of studies on these must be objective, however, in order to be reliable and valid for scientific purposes. See behaviorism.