They behave differently to different stimuli because of a multitude of factors. These include an individual's age, sex, education, intelligence, personality, physical characteristics, experience, values, and family and cultural background. For instance, a young railway ticket collector would behave differently from one who is more experienced and mature, situational variables affecting individual behavior include organizational and social variables, for example, type of organization, nature of supervision, and physical and job variables tike method of work, design of work, and physical work environment.