How the IV was manipulated: Participants were randomly assigned to one of two conditions: warm or cold. In the warm condition, participants were told that the target person was "warm, friendly, and likable." In the cold condition, participants were told that the target person was "cold, unfriendly, and dislikable."
How the DV was measured: Participants were asked to rate the target person on a number of traits, including friendliness, likability, trustworthiness, and warmth.
Theory: Kelley hypothesized that people's impressions of others are influenced by the information they have about those others. He specifically predicted that people would have more positive impressions of people who are described as warm than of people who are described as cold.
Explanation:
Hypothesis: People will have more positive impressions of people who are described as warm than of people who are described as cold.