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.
Observation is the process of watching a child at work or play without. interfering in the activity. Recording is the process of documenting the observed activity or behavior. Although many teachers do this naturall~ a systematic approach helps ensure.