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.
Covert behavior is behavior that is not seen or observed, according to the National Institutes of Health. Covert behaviors are very important to psychologists since these behaviors must be changed for treatment to be successful. Continue Reading.