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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.
Social investment theory argues that such changes in personality traits is due to the establishment of individuals' own social lives into which they invest (social investment principle). This perspective assumes the development of identities through psychological commitments to social institutions in the form of social roles, which offer ...
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 risk-free asset is the (hypothetical) asset that pays a risk-free rate. In practice, short-term government securities (such as US treasury bills) are used as a risk-free asset, because they pay a fixed rate of interest and have exceptionally low default risk. The risk-free asset has zero variance in returns if held to maturity (hence is ...
DAD–SAS model; Diamond–Dybvig model; Discrete choice; Dividend discount model; Dixit–Stiglitz model; Domar serfdom model; Double marginalization; Doughnut (economic model) Dual-sector model; Dynamic discrete choice
The SROI method as it has been standardized by Social Value UK, formerly called the Social Return on Investment (SROI) Network, [1] provides a consistent quantitative approach to understanding and managing the impacts of a project, business, organisation, fund or policy. It accounts for stakeholders' views of impact, and puts financial 'proxy ...