Maddox, a baby born 6 weeks prematurely, is more at risk of not surviving than his sister, Shekia, who was born full term because Maddox's __________ is/are still immature

Tom, aged 52, has less sexual vigor and fewer fertile sperm than in the past. Tom is experiencing

a. menopause b. sexual senility c. the climacteric d. sexual impotency

According to Nisbett (1993), a(n) ________ is characteristic of regions where inhabitants evolved from herding societies, and thus ________

a. culture of honor; aggression is relatively rare b. culture of honor; some forms of aggression are more common c. norm of "machismo"; aggression is more common and more lethal d. ethos of cooperation; aggression has become evolutionarily maladaptive