Which of the following is true of physiological measures used in the study of life-span development?
Multiple Choice
A. They are based on the assumption that a person's behavior is consistent and stable, yet personality can vary with the situation
B. They involve the use of a standard set of questions to obtain people's self-reparted beliefs about a particular topic.
C. They involve the use of electromagnetic waves to construct images of a person's brain tissue and biochemical activity.
D. They provide insights that sometimes cannot be attained in the laboratory and are used at sporting events and child-care.
