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.
â observation. 1. 'observance'. The observance of a rule or custom is the practice of obeying it or following it. Observance is a fairly formal word. Local councils should use their powers to ensure strict observance of laws. 2. 'observation'.