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The investment model of commitment, originally described by Caryl E. Rusbult, is a predictive psychological theory that aims to explain why people remain in relationships. Its tenants are based primarily on those of interdependence theory , created by Harold Kelley and John Thibaut . [ 1 ]
Caryl E. Rusbult was a professor and chair of the Department of Social and Organizational Psychology at the Vrije Universiteit in Amsterdam, Netherlands. She died from uterine cancer on January 27, 2010. Rusbult received her B.A. in Sociology from UCLA (1974) and Ph.D. in Psychology from the University of North Carolina at Chapel Hill (1978).
The investment model proposed by Caryl Rusbult is a useful version of social exchange theory. According to this model, investments serve to stabilize relationships. The greater the nontransferable investments a person has in a given relationship, the more stable the relationship is likely to be.
The investment model of commitment is a theoretical framework that suggests that an evaluation of relationship satisfaction, relationship investment, and the quality of alternatives to the relationship impact whether an individual remains in a relationship.
Social exchange theory and Rusbult's investment model show that relationship satisfaction is based on three factors: rewards, costs, and comparison levels (Miller, 2012). [70] Rewards refer to any aspects of the partner or relationship that are positive. Conversely, costs are the negative or unpleasant aspects of the partner or their relationship.
Interdependence theory is a social exchange theory that states that interpersonal relationships are defined through interpersonal interdependence, which is "the process by which interacting people influence one another's experiences" [1] (Van Lange & Balliet, 2014, p. 65).
Calculating option prices, and their "Greeks", i.e. sensitivities, combines: (i) a model of the underlying price behavior, or "process" - i.e. the asset pricing model selected, with its parameters having been calibrated to observed prices; and (ii) a mathematical method which returns the premium (or sensitivity) as the expected value of option ...
The study of values has a long history in psychological research, for instance, Rokeach's value scale, which has been used widely. [1] That focus has also been transferred to the study of culture in psychology. The anthropologists Kluckhohn and Strodtbeck conducted a large-scale study of values in five Southwestern US cultures in the 1950s. [2]