Max was observing the group of animals. Knowing that the black rat had been separated from its mother soon after birth, Max immediately scored its lack of movement as depression. Max has possibly introduced __________ into his experiment.

Question

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Max's interpretation of the black rat's lack of movement as depression, based on its early separation from its mother, suggests that his expectations or hypotheses about the animal's behavior could influence his observations or interpretations of the behavior. This is a classic example of experimenter bias, where the researcher's expectations or biases affect the outcome of the experiment.

Max Was Observing the Group of Animals