Correlation and Regression/Mediating vs. moderating

Question 1

The correlation, r = .71, between teachers’ ratings of aggression and rule breaking behaviors:

Answer 1

A. Shows a strong relationship between the two ratings
B. Suggests as aggression ratings go up so do rule breaking ratings
C. Indicates a causal relationship
D. Both A and B*****
E. A, B, and C are correct.

Question 2

In the multiple regression study,

Answer 2

A. The overall effect size of the prediction is small.****
B. All the predictors significantly predict end of the year word reading skill.
C. Both ADHD and Depression problems predicts end of the year word reading skill.
D. Both A and B are true.
E. Both A and C are true.
F. A, B, and C are true.

Question 3

Multiple regression is different than simple correlation because____________.

Answer 3

A. It allows for the use of more than one independent variable
B. It increases the amount of variance explained when the other variables correlate with the dependent variable
C. It allows for causal interpretations
D. Both A and B****
E. Both B and C
F. Of A, B, and C

Question 4

Moderator vs. Mediator:

A variable that is causally related to the outcome variable but not directly manipulated is a?

Answer 4

A. (an) independent variable
B. Dependent variable
C. Moderating variable
D. Mediating variable****