Final answer:
The Stroop test measures a person's ability to inhibit automatic response and focus attention. A normal person experiences interference when performing the test, while a psychopath may show reduced interference due to impaired response inhibition and reduced attentional control.
Step-by-step explanation:
The Stroop test is a psychological test that measures a person's ability to inhibit automatic response and focus attention. In the test, participants are presented with color words printed in different ink colors. They are then asked to name the color of the ink instead of reading the word. This task creates conflict between the automatic process of reading and the controlled process of naming the color, leading to slower response times and errors.
A normal person will experience interference when performing the Stroop test, as it requires effortful control to overcome the automatic response of reading the word. This interference is measured by the difference in response times between congruent trials (where the word and ink color match) and incongruent trials (where the word and ink color do not match). A psychopath, on the other hand, may show reduced interference in the Stroop test due to impaired response inhibition and reduced attentional control.