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.
Descriptive Observation and Experiment. 1  Normative observation is discussed on another page.  Observation means studying and gathering information on an activity: of what happens, what your object of study does or how it behaves. Observation is visual: you use your own eyes, perhaps assisted with a camera or other recording instrument.