People in the United States often think of a sports car when asked to envision a fun, fast form of travel. In this example, a sports car would be considered a

_____ When nine-year-old children are asked to explain their reasoning on a conservation of liquid quantity problem, they are likely to say something like "this glass has more water because it is taller."

Indicate whether the statement is true or false

Research on sibling relationships has found that

a. relationships are more harmonious when siblings are of the opposite sex than when they are of the same sex. b. relationships become worse as the younger sibling enters adolescence. c. relationships are less harmonious when children believe that their parents have "favorites." d. conflict between siblings is not related to conflict between the parents.