Ryan's doctor told him that he is most likely experiencing hearing loss because of long-term use of _____, which reduced the blood supply to his ear.

Twelve year old Jerry has an IQ of 75 on the original version of the Stanford Binet. His mental age is:

a. 8. b. 9. c. 10. d. 12. e. 16.

The construct validity of observations can be threatened by all of the following EXCEPT:

a. observer bias. b. observer effects. c. reactivity. d. socially desirable responding.