Most experts believe that between 4% and 10% of men and women are exclusively homosexual during extended periods of their lives

According to Freud, the stage of psychosexual development in which the child's erotic feelings center on the bladder, bowels, and the process of elimination is the ______ stage

a. anal c. genital b. latency d. phallic

Heroin addiction and crime are thought to be highly correlated because

a) the drug causes loss of a moral sense, and sociopathy develops. b) criminals are more likely to become drug addicts than non-criminals because of their association with people in the "black market" drug trade. c) addicts commit crimes in order to raise money to buy drugs. d) addicts do not actually commit more crimes but are arrested more often because their behavior while on the drug is disruptive.