After participants in one study were informed that a videotaped interviewee was a psychiatric patient, they characterized the person with phrases such as “a passive, dependent type” and “frightened of his own aggressive impulses.” this study best illustrated the

I think this study best illustrated the biasing power of the diagnostic labels.

Most people often categorized a specific status with a certain behavior that other people do.
Another example is when you hear that a person is an ex-member of the Navy Seal, you will automatically associate his character as a strong, confident, and harsh.

Ibelieve the answer is water and oil.