| A | B |
|---|
| the small group of participants, out of the total number available, that a researcher studies | sample |
| research method in which the psychologist observes the subject in a normal setting without interfering | naturalistic observation |
| research method that involves an intensive investigation of one or more participants | case study |
| research method in which information is obtained by asking many individuals a fixed set of questions | survey |
| research method in which data is collected about a group of participants over a number of years to assess how certain characteristics change or remain the same during development | longitudinal study |
| research method in which data is collected from groups of participants of different ages and compared so that conclusions can be drawn about differences due to age | cross sectional study |
| the measure of a relationship between two variables or sets of data | correlation |
| an educated guess about the relationship between two variables | hypothesis |
| any factor that is capable of change | variable |
| the group in which an independent variable is applied | experimental group |
| the group that is treated in the same way as the experimental group except that the experimental treatment is not applied | control group |
| situation in which a researcher's expectations influence that person's own behavior, and thereby influence the participant's behavior | self-fulfilling prophecy |
| an experiment in which the participants are unaware of which participants received the treatment | single-blind experiment |
| an experiment in which neither the experimenter nor the participants know which participants received which treatment | double-blind experiment |
| a change in a participants illness or behavior that results from a beleif that the treatment will have an effect, rather than the actual treatment | placebo effect |
| the weakest amount of a stimulus required to produce a sensation | absolute threshold |
| the principle that the larger or stronger a stimulus, the larger the change required for an observer to notice a difference | Weber's Law |
| occurs anytime a stimulus activates one of your receptors | sensation |
| the smallest change in a physical stimulus that can be detected | difference threshold |
| the organization of information received through our senses | perception |
