Researchers estimate that the first humans to speak language as we know it lived in East Africa about __________ years ago

As a general rule, what should you provide the first time you use an unfamiliar term?

A) a definition B) an example C) an explanation D) a description

In-group and out-group distinctions may

a. stem from the need to feel positive about our in-group. b. stem from the need to feel positive about our out-group. c. occur when we want to join an out-group. d. occur when others want to join our in-group. e. All of the above