If a person's score on a questionnaire has been found to predict observed social skills, and the linear prediction rule uses a regression constant of 16 and a regression coefficient of 3, the predicted level of social skills for a person with a score

Although interventions are designed to change behavior and enhance health, sometimes this does not happen. In a classic example of this issue, Mann et al, 1997 evaluated an eating disorder program and found that:

a. the students in the control group actually did better than those in the experimental group b. friends of students in the study got worse c. students in the experimental group got worse instead of better d. roommates of students in the experimental group did worse than the experimental students

In a study by Hyde and colleagues (1990), it was found that boys perform better than girls in word problems in __________

a. elementary school c. high school and college b. middle school d. never