| A | B |
| case study | detailed description of a particular individual being studied |
| control condition | these subjects are not exposed to the same treatment as those in the experimental condition |
| dependent variable | a variable that an experimenter predicts will be affected by manipulations |
| experimenter effects | unintended changes in subjects' behavior due to cues inadvertently given by the experimenter |
| experiment | controlled test of a hypothesis in which the researcher manipulates one variable to discover its effect on another |
| independent variable | variable that an experimenter manipulates |
| negative correlation | an association between increases in one variable and decreases in another |
| operational definition | precise definition of a term in a hypothesis |
| reliablility | in test construction, the consistency from one time and place to another, of scores derived from a test |
| positive correlation | an association between increases in one variable and increases in another |
| validity | the ability of a test to measure what it was designed to measure |