| A | B |
| REM bound | the tendency for REM sleep to increase following REM sleep deprivation( created by repeated awakenings during REM sleep. |
| perception | the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events |
| parallel processing | the processing of several aspects of a prolem simultaneously; the brain's natural mode of information processiong for many functions, including vision. |
| ourgroup | "them"-- those perceived as different or apart from one's ingroup |
| overconfidence | the tendency to be more confident than correct to overestimate the accuracy of one's beliefs and judgments |
| opiates | opium and its derivatives, such as morphine and heroin; they depress neural activity, temporarily lessening pain and anxiety. |
| mental set | a tendency to approach a problem in a particular way, especially a way that has been successful in the past but may or may not be hepful in solving a new problem. |
| menarche | the first menstrual perod. |
| lesion | tissue destruction. A brain lesion is a naturally or experimentally caused destruction of brain tissue. |
| iris | a ring of muscles tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening. |
| case study | an observation technique in which one person is studied indepth in the hope of revealing universal priciples. |
| belief bias | the tendency for one's preexisting beliefs to distort logical reasoning, sometimes by making invalid conclusions seem valid, or valid conclusions seem invalid. |
| critical period | an oprimal period shortly after birth when an organism;s exposure to certain stimuli or experiences produces proper development. |
| correlation coefficient | a statistical measure of the extent to which two factors vary togeter, and thus of how well either factor predicts the other |
| attachment | an emotional tie with another person; shown in young children by their seeking closeness to the caregiver and showing distress on seperation |
| applied research | scientific study that aims to solve practical problems |
| amygdala | two almond-shaped neral clusters hat are components of the limbic system and are linked to emotion |
| amnesia | the loss of memory |
| alpha waves | te relatively slow brain waves of a relaxed, awke state. |
| associative learning | learning that certain events occur together. the events may be two stimuli( as in classical conditioning) or a response and its consequences(as in operant conditioning) |