Most cases of attention-deficit/hyperactivity disorder in adults are characterized by __________ rather than __________.

Which of the following is the hypothesis an evolutionary psychologist is most likely to put forth?

a. Humans dislike bitter food because it indicates that the flavoring is artificial. b. Humans are often scared of loud sirens because they are associated with the police. c. Humans are often scared of snakes because this trait protected our ancestors from deadly bites. d. Humans like sweet food because it is associated with special treats, like ice cream.

Which of the following has been used to help children with problems related to bedwetting?

a) the development of a pad that beeps when it is touched by moisture b) the development of an alarm clock which automatically wakes a child up when it senses a full bladder c) the development of a stuffed animal that "giggles" when a child's brain-wave pattern indicates pending urination d) the development of a diaper that produces a foul odor when it is moistened with urine