Mitch has a research assistant that is not very socially adept. He notices that the participants of

this research assistant provide different data when interviewed than the participants of other
assistants.

This validity threat is known as __________.
Fill in the blanks with correct word

reactivity

Psychology

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Daniela and Alicia are conducting a systematic observation study on children's aggressive behavior in playgrounds. Daniela concludes that boys display more aggressive behaviors than do girls, whereas Alicia concludes the opposite. Which methodological issue would be of most concern in this study?

What will be an ideal response?

Psychology

A study in which neither the experimenter nor the participant knows the value of the

independent variable is called a(n) __________ study. a. counterbalanced b. single-blind c. subjective d. double-blind e. objective

Psychology