The MOST well-developed understanding of the causes of suicide come from the:

Within the framework of the Big Five Personality Factors, conscientiousness is a personality factor that describes the degree to which a person is

a. sociable, talkative, and assertive. b. imaginative, artistically sensitive, and intellectual. c. calm, self confident, and secure. d. responsible, dependable, persistent, and achievement oriented. e. good natured, cooperative, and trusting.

Why would gratitude evolve in a social group?

a. to motivate us to return help we have received from others b. to increase the costs of helping c. to make people feel empathy d. to facilitate group selection