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.
The definition of an observation is the act of noticing something or a judgment or inference from something seen or experienced. 1  An example of observation is the watching of Haley's Comet. 2  An example of observation is making the statement that a teacher is proficient from watching him teach several times.