Answer:
Participant; experimenter
Explanation:
Participant expectations: The term participant expectations are defined as the tendency of a participant's ideas or thinking about a particular research and therefore the researcher or experimenter that results in affecting the data's trustworthiness. In research, participants often alter their behavior based on the design and nature of a particular study or research.
Experimenter expectations: the term experimenter expectations are defined as one of the factors related to the experimenter bias. It often occurs when the experimenter psychologist, experimenter, or researcher tends to anticipate a specific finding will make sure about the hypothesis.
