Final answer:
In assessing anti-Black prejudice, Researcher X is least likely to find prejudicial responses through physiological measures.
Step-by-step explanation:
Physiological measures typically involve monitoring physiological responses such as heart rate, skin conductance, or brain activity. These measures are more direct and less influenced by social desirability biases than self-report measures, where individuals may be hesitant to admit prejudicial attitudes due to social norms or concerns about appearing biased.
Physiological responses are often automatic and can provide insights into implicit or subconscious reactions, but they may not specifically target prejudicial attitudes or beliefs. Prejudice is a complex social construct influenced by cognitive, affective, and behavioral components, which may not always manifest as clear physiological responses. While physiological measures can provide valuable data on emotional arousal, they may not directly capture the nuanced nature of prejudice.