Whether we drive our car across an intersection depends on if the traffic light is red or green. This illustrates the principle of

Malcolm, aged 35, is severely depressed. Because of this he is given electroconvulsive shock therapy. After treatment, he is sent home and does much better. However, his TV-watching behavior is strange. Malcolm thinks that last year's episodes of his favorite series are new. Malcolm is showing signs of ______________.

a) anterograde amnesia b) retrograde amnesia c) childhood amnesia d) senile dementia

During prenatal development, females exposed to high levels of androgens (male hormones) prefer to play with

a. boys. c. both genders. b. girls. d. neither gender.