Robert is a participant in a study of emotions. Although he is not aware of it, the psychologist conducting the study is monitoring and recording his facial expressions. What measurement technique is being used in this study?

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Behavioral observation involves directly observing and recording a person's behavior, including facial expressions. In this study, the psychologist is monitoring and recording Robert's facial expressions, which falls under the category of behavioral observation. Physiological measurement involves measuring activity in the body (e.g. heart rate, brain activity), self-report involves participants reporting their own thoughts, feelings, and behaviors, and functional phenomenology index is not a commonly used measurement technique in psychology.

Robert Is a Participant in a Study of Emotions