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An actor has been hired to appear in a series of commercials promoting a new laptop computer.The actor's last two movies,however,have failed at the box office,which means that the actor may NOT serve as the optimal _____ in the commercials.
Developmental Change
Transformations or transitions in the psychological, emotional, or physical state of a person or group over time.
External Validity
The extent to which the findings of a study can be generalized to other people, settings, times, measures, and characteristics.
Internal Validity
The extent to which a research study accurately reflects or assesses the specific concepts or variables it is intended to measure.
Descriptive Field Studies
Research that involves observing and describing the behavior of subjects in their natural environment.
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