Postnatal causes of intellectual disability, such as encephalitis and lead poisoning account for about ______ percent of the cases diagnosed

The tendency of the body to maintain a balanced internal state is called __________

a) arousal. b) homeostasis. c) drive. d) biological motives.

As a general rule, as children get older, they solve problems

a. more often and more effectively. c. less often, but more effectively. b. more often, but less effectively. d. less often and less effectively.