The Nonlinear Interaction of Person and Situation (NIPS) Model and Its Values for a Psychology of Situations
The Nonlinear Interaction of Person and Situation (NIPS) Model (Schmitt et al., 2013) is a descriptive model that designates how personality traits and functionally equivalent characteristics of the situation interactively shape behavior. On the basis of the mathematical form of this model (i.e., a logistic function), we suggest the NIPS Process Model. Using previous results from item response theory and psychophysics, we determined which processes have to be considered in the person-situation interaction. The NIPS Process Model consists of four elements: activation (supplied by person’s threshold and situation’s demands), tendency (supplied by person’s bias and situation’s alternatives), inhibition (supplied by person’s avoidance and situation’s restrictions), and predictability (supplied person’s variability and situation’s selectivity). It systematically assembles the factors that influence behavior and is applicable to many psychological fields. It can be used to reflect on relations between process models in various psychological disciplines and provides guidelines for much-needed future research.