Akia rubbed some cortisone cream on the spot where a mosquito had bitten her and the itching stopped. The next time a mosquito bit her, she reached for the cortisone cream. In terms of operant conditioning, this is an example of

Researchers have found that if one identical (monozygotic) twin suffers from schizophrenia, the other twin has a 50% chance of developing that condition. In fraternal (dizygotic) twins, however,

if one twin has the condition than the other a 27% chance of developing the disorder. These results provide evidence that there may be a strong __________ component to schizophrenia. a. environmental b. heritability c. diathesis d. chemical

Activities that improve memory are called

a. memory strategies. c. sensory memory. b. information processing. d. working memory.