Final answer:
White participants in the psychology study were more likely to identify non-weapons as weapons and identify weapons faster when they were shown a black face before seeing the object. This suggests that implicit racial prejudice and stereotypes can affect perception.
Step-by-step explanation:
In the study you mentioned, white participants were asked to quickly determine whether an object shown to them was a gun or a tool. Before seeing the object, they were briefly shown a picture of either a black face or a white face. The researchers found that when the participants saw a black face, they were more likely to identify non-weapons as weapons and identify weapons faster. This suggests that implicit racial prejudice and stereotypes can impact perception.