Today, IQ scores for adults are calculated by comparing a person's score with the average score of people who are the same age. This was proposed by __________

When researchers showed students a series of computer-generated, fairly sex-neutral faces with a range of expressions morphing from angry to happy, the students consistently rated the angry faces as ________

a. male. b. female. c. the opposite of the student's own gender. d. the same as the student's own gender.

The neurotransmitter __________, which is a stimulating substance that operates in the hypothalamus, appears to be deficient or even absent in the brains of narcoleptic individuals

a. glycine b. hypocretin c. atropine d. adenosine