Until very recently, approximately 130 years ago, psychology was considered to be a branch of __________

Scott works at a job where he is paid a salary every two weeks. Scott is being reinforced on a ______ schedule

a. fixed-ratio c. variable-ratio b. fixed-interval d. variable-interval

According to Erikson's theory, aging and the threat of death become sources of fear and depression when an elderly person lacks

a. industry. b. integrity. c. trust. d. generativity.