Mathematical models in psychology Do you know examples of application of mathematics in psychology besides statistical data processing?
For example, do there exist mathematical models of addiction to Internet sites?

Actually there are a few models using a different approach.
Have a look at Abelson 1967 and more recently
Agent-Based Modeling: A New Approach for Theory Building in Social Psychology
Eliot R. Smith and Frederica R. Conrey
Pers Soc Psychol Rev 2007; 11; 87
DOI: 10.1177/1088868306294789
I published also some models, see e.g.
Dal Forno A., & Merlone, U., (2013). Nonlinear dynamics in work groups with Bion's basic assumptions. Nonlinear Dynamics, Psychology, and Life Sciences, Vol.17, No.2, April, pp.295-315.
