哈罗德·凯利

Harold Kelley (February 16, 1921 – January 29, 2003) was an American social psychologist and professor of psychology at the University of California, Los Angeles. His major contributions have been the development of interdependence theory (with John Thibaut), the early work of attribution theory, and a lifelong interest in understanding close relationships processes. A Review of General Psychology survey, published in 2002, ranked Kelley as the 43rd most cited psychologist of the 20th century.

Biography

Harold Kelley was born in Boise, Idaho. His family moved to the rural town of Delano, California when he was 10; while there, Kelley met and married his high school sweetheart, Dorothy. They had three children Ann, Sten & Megan, and later five grandchildren.

After graduating from high school, Kelley went on to Bakersfield Junior College, and by 1942 graduated with a B.A. in Psychology from the University of California, Berkeley; in 1943, Kelley continued at UC Berkeley to earn a master's degree in Psychology as well.

As was the case for most social psychologists of his era, Kelley was hired by the Aviation Psychology Program of the army air force during World War II, where he worked on developing selection tests and analyzing the performance of aircrew members.

By the end of the war, Kelley was advised by his aviation mentor Stuart Cook to continue his education. Shortly thereafter, he enrolled at Massachusetts Institute of Technology (MIT) in the Center for Group Dynamics then headed by Kurt Lewin. Kelley obtained his Ph.D. from MIT in 1948. The center moved to the Institute for Social Research at the University of Michigan in 1949 after Lewin's death, and Kelley continued to work with them for a year.

In 1950, Kelley accepted his first academic position as an assistant professor at Yale, where he worked with Carl Hovland and Irving Janis to write his first collaborative book "Communication and Persuasion". In 1955, Kelley left Yale and was hired at the University of Minnesota. During this time, Kelley was co-author of a book titled "The Social Psychology of Groups" along with John W. Thibaut. Kelley then moved to UCLA, where he stayed for the rest of his academic career. After retiring in 1991, Kelley remained active as a member of the Emeritus at UCLA. He held many leadership roles, one being the chairman of some of the organizations at UCLA. His work ethic and his passion for social psychology, sparked an interest in students towards that field. They used Kelley as a role model to pursue their own individual careers in that same field of psychology. He died of cancer in January 2003 in his Malibu home.

Work

One of Kelley's most widely cited theses was one he wrote in 1948. Influenced by Solomon Asch's experiment, which was speculating "positive" or "negative" impressions were determined by central traits, like "hot" or "cold." He described a real person as "warm" and to others as "cold" while their actions and demeanour were identical in both cases. His findings replicated Asch's findings where the subjects tended to have more positive impressions when the person was to be described as "warm." Conversely, the subjects tended to have more negative impressions when the person was described as "cold."

Interdependence theory

Harold Kelley's most important collaboration was with John Thibaut, with whom he developed interdependence theory. Often identified as a social exchange theory, interdependence theory was first broadly addressed by Thibaut & Kelley in their 1959 book "The Social Psychology of Groups", and later more comprehensively formalized in their 1978 book "Interpersonal Relations: A Theory of Interdependence. In the 1998 Handbook of Social Psychology, it is said of Kelley & Thibaut's interdependence theory, "Given the elegance and profundity of this analysis… there is good reason that its impact will be durable." Indeed, for over 50 years interdependence theory has influenced generations of scientists studying group dynamics, social comparison, attribution, self-presentation, self-regulation, love, commitment, and conflict, among other topics.

Interdependence theory is defined via patterns of interdependence in interpersonal interactions, identifying the extent to which one partner can affect and/or control the other's outcomes in a given interaction. In interdependence theory, the focus is on the interaction, in this sense the between person relationship is just as important as the people themselves.

Interdependence theory is conceptualized through an extension of Kurt Lewin's key behavioral equation B = f(P, E), in which Behavior (B) is a function of the Person (P) and their Environment (E). Using interdependence theory I = f(S,A,B), where any given Interaction (I) is represented as a function of the two people in it (A and B) and the context of the specific interdependence situation (S).

The theory is set up with a rewards and costs model similar to those used in game theory. The balance of rewards and costs between partners within a relationship as well as how well rewards and costs compare to what would be expected in another relationship predict relationship quality. Kelley used the economic terminology to defend the idea that people are maximizers of good outcomes (high rewards, low costs) in relationships just as they are with finances or other decision-making. These reward and cost outcomes are often presented in matrices closely resembling the payoff matrices used in game theory, which had also been adapted in psychological research previously but not as comprehensively utilized. In the matrix, person A's possible actions in the interaction would be listed on the horizontal, and person B's on the vertical. Each cell within the matrix then represents the reward and cost outcomes for both individuals given the particular combination of A's and B's actions. Kelley's use of the matrices provided an objective visual representation of all possible outcomes in a given interaction.