Reinforcement contingencies are unimportant in determining what behaviors observers are willing to perform spontaneously

Which of the following groups would be described as a "cohort"?

a. everyone who was once a preschooler with a working mother b. everyone born during the Great Depression of the 1930s c. everyone in whose mother was named Anna d. everyone who lives in the western hemisphere

One of the first tasks a researcher must engage in when starting a project on a is to

a. make sure that all the concepts are complex or abstract. b. avoid making the concepts too concrete. c. identify concrete concepts and make them abstract. d. generate ways of measuring complex and abstract concepts.