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Order of experimental effects; alternating levels of the independent variable in experiments according to individual plots. There are three schemes: 1.Random sequence of effects. 2..

A natural group of individuals with a certain set of characteristics. potential study participants. and part of the general population.

In vivo studies that increase external and environmental validity. This term is used in social psychology and sociology.

Quantitative characteristics of the subject’s behavior. the appearance of the dependent variable.

A person’s reaction to “empty” (zero) influences corresponding to the reaction in the presence of a real influence. Discovered by Feldman in 1956: Patients felt.