Within the category of disruptive, impulse control, and conduct disorders is a disorder in which the person chronically sets fires. This disorder is called

Which statement best describes the history of education in the United States?

a. During the late 19th century, children went to school mostly during the spring and summer because it was too expensive to heat the schoolhouse in other times of the year. b. Enrollment in school decreased throughout much of the 19th century. c. In the late 19th century, classrooms were segregated by gender and age. d. Prior to 1800, about half of children did not attend school.

Correlational research is not appropriate for identifying what variable might affect another variable because

a. it is hard to find predictable relationships between complex variables. b. when researchers manipulate variables, other unknown variables might affect behavior. c. it is often not clear which of the variables being measured could be the one influencing another variable. d. correlations may not be appropriate in observational research.