What is the main basis of friendship, not just during middle childhood but at all ages?

In an experiment described in the textbook, participants watched short films that put them in happy, neutral, or sad moods. Via videotapes,

the participants were then required to judge the guilt or innocence of people who said they had stolen a movie ticket. In general, a. happy moods resulted in greater belief that people were being dishonest. b. sad moods resulted in better performance at identifying who was being dishonest. c. happy moods made no difference in judgments. d. sad moods made no difference in judgments.

Placebo-controlled studies have shown that the drugs used to treat attention-deficit disorder _____

a) work no better than placebos. b) have positive effects for 70% to 90% of the children who take them. c) increase the risk of developing anxiety disorders. d) actually impair children's' functioning more.