Obtaining information about genetic vulnerability will not significantly increase the number of psychological questions regarding this issue

In addition to fostering positive behavior exchanges, traditional behavior couple therapy provides training in

a. stress inoculation. b. financial management. c. modern gender-roles. d. problem-solving skills

Dr. Dalbey is studying the effects of fatigue on aggression. He hypothesizes that the more fatigue a person is experiencing, the more aggressively the person will behave. Unbeknownst to Dr. Dalbey, the participants' level of hunger also had an impact on their aggression. Hunger could thus be a(n) ____ variable.?

a. ?independent b. ?dependent c. ?confounding d. ?intervening