Mona has been abusing cocaine and now suffers from an inability to feel pleasure. This condition is called

Mary Ainsworth observed that securely attached infants

a. do not seem to care when the mother leaves the room and do not seek her out on her return. b. protest loudly when the mother leaves but resist contact with her when she returns. c. cry if the mother leaves the room, are easily soothed, and welcome her back when she returns. d. are not concerned upon separation but cry to be picked up and held on her return. e. allow their parents to do whatever they want, as long as they have their own toys nearby.

In the concrete operational stage, the child demonstrates __________ , which is the ability to

understand that irrelevant transformations, for example changes only in color, shape, spacing, and glass size, do not change the relevant variables of amount, number, length, and volume. Fill in the blanks with correct word