Tom's speech makes no sense. He acts childlike and giggles for no apparent reason. Tom would likely be diagnosed as which type of schizophrenia?

A boy is teaching his younger sister how to make her bed. At first, he tells her she did a good job if she gets the bedspread pulled up, even if the sheets are still rumpled. Each following day,

he encourages her to be a little neater before telling her she did a good job. The boy may not know it, but he is using a. secondary reinforcement. b. primary reinforcement. c. a fixed-interval schedule. d. shaping by successive approximations.

Andrea desires to contrast preterm and fullterm infants on a mental test. When should Andrea

conduct the first assessment? A) The infant groups should be contrasted immediately after birth. B) When the infants reach 12 months of age; this strategy allows the preterm infants to better catch-up. C) When the preterm infants reach their hypothetical, fullterm gestational age. D) The timing of the comparison is not relevant; she should be more concerned with matching the infants on medical status.