The correct answer is 1. display rules.
Display rules is a term describing informal rules about the way, the time and the place that a person should express and communicate his/her emotions. These rules are not set since they differ greatly depending on the culture and the society. In this example, Jessica showed exaggerated excitement when hearing about her friend's engagement. This is because according to the display rules these were news that should make her very happy.
Answer:
Psychologists should focus on observable behaviors only
Explanation:
B. F. Skinner is best known for his contribution to psychology by discovering the operant conditioning theory. B. F. Skinner is one of the famous behaviorists and psychologists of his time. Therefore, he used to believe that all behaviors led by an organism including human beings, animals, etc are learned and hence it can be possible for people to determine the inner characteristics based on the organism's outer behavior.
B. F. Skinner criticizes the psychoanalytic and functionalist approach to psychology and believed that every psychologist should focus more on observable behaviors rather than any inner conflicts, or unconscious mind.