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A method that focuses on the study of unique personality traits; an approach that directs the researcher to study unique and specific objects, events, and.

A mental phenomenon, property, or factor whose change is the result of a change in the independent variable. The dependent variable must be sensitive. that.

An experiment conducted under normal life conditions on examinees. It is characterized by a high level of ecological validity and a low level of internal.

A research plan with a blueprint that does not take into account the requirements of classical experimental design.

One of the factors that is essential to the relationship being studied between cause and effect; an additional variable that is of particular importance to.