After surviving an Amtrak derailment, John experienced frequent, vivid thoughts and images of the accident for several months. He also had problems sleeping and was irritable and withdrawn. John is suffering from:

Piaget's basic test for object permanence involves

seeing how babies play with their mothers. showing a baby an interesting toy and then covering it with a cloth. placing a toe in a baby's hand and seeing how the baby responds to it. seeing if a baby can imitate a facial expression it has been shown.

Your text discusses research by Carli on the use of phrases such as "I'm not sure" and "I suppose.". This research found that

a. women consistently use these hesitant phrases more than men. b. men and women use these hesitant phrases equally. c. men use hesitant phrases when talking with women, but not with other men. d. women sometimes use hesitant phrases when talking with men, but not with other women.