Harold Kelley

Kelley's pursuit of collaboration led to the development of the first society for relationships researchers, the International Society for the Study of Personal Relationships (ISSPR). Kelley served as one of its earliest leaders as President from 1987-1990. This group has since evolved and is now a part of the International Association for Relationships Research (IARR).

While exploring the conceptualizations and the possible “real life” applications of interdependence theory and attribution theory, Kelley began examining the interactions and perceptions of young couples in harmony and conflict, and the ways in which they negotiated and attempted to resolve conflicts. Kelley's interest in collaboration continued through his life with other colleagues as well. This work led him to elaborate both attribution and interdependence theories in the context of close relationships, resulting in the important and pioneering 1979 book, Personal Relationships. A subsequent co-authored volume titled Close Relationships, encouraged the examination of topics long ignored in social psychology such as attraction, love, commitment, power and conflict in relationships.

Through his work on personal relationships, Kelley formalized the definition of an interpersonal relationship. First in 1979, Kelley identified the three essential elements of a personal relationship, 1) Interdependence in the consequences of specific behaviors, 2) Interaction that is responsive to one another's outcomes, and 3) Attribution of interaction events to dispositions. In this conceptualization, Kelley brought together his major research areas, interdependence, attributions, and personal relationships Kelley later went on to create an operational definition of a close relationship in his 1983 Close Relationships collaboration as, "a close relationship is one of strong, frequent and diverse interdependence that lasts over a considerable period of time".

Kelley received numerous awards and accreditation for his contributions to the field of psychology, namely the Distinguished Scientific Contribution Award from the American Psychological Association in 1971, the Cooley-Mead Award from the American Sociological Association in 1999, and recognition by the Society of Experimental Social Psychology, the Society for the Psychological Studies of Social Issues, the American Psychological Society, and the International Society for the Study of Personal Relationships. Kelley's numerous contributions toward Social Psychology has allowed for greater development and understanding in the field of Social Psychology

Kelley liked to consider his main contribution to be his work on interdependence theory and the social psychology of personal relationships. Yet, he is also very well known for his contributions to attribution theory. Kelley published a number of important papers on attribution theory from 1967–1973, which described the processes and manner that we attribute causality.

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.

While later in his career was the first time Kelley began using the terms close and personal relationships, Kelley's interest in the topic stemmed back to his earliest works. In his book “The Social Psychology of Groups” (1959), nearly all of his examples are formed from dyadic interactions. Similarly, interdependence theory was formulated with interactions functioning as a result of two individuals and their specific interdependent situation. In this way, interactions within a group could always be brought down to the level of a pair.

Kelley's relationship with John Thibaut from 1953-1986 is recognized as one of the greatest psychological collaborations of all-time.

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.

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.

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."

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.

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.