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.
Definition of Participant Observation. The participant observation technique that Rosenhan used differs from naturalistic observation in that the observer is not only part of the observed environment but also a participant in the situation being studied.he participant observation technique that Rosenhan used differs from naturalistic observation in that the observer is not only part of the observed environment but also a participant in the situation being studied.