How Habits Interfere with Norm-Directed Behaviour: A Normative Decision-Making Model for Travel Mode Choice

Klöckner, C., & Matthies, E. (2004). How habits interfere with norm-directed behaviour: A normative decision-making model for travel mode choice. Journal of Environmental Psychology, 24(3), 319-327. doi:10.1016/j.jenvp.2004.08.004.

This paper deals with the question how habits can be integrated into a model of normative decision-making based on the work of Schwartz and Howard (1981). A field study was conducted in Bochum, Germany, involving 160 participants. After a personal interview the participant had to protocol the travel mode choice on their trips to work in a logbook for the period of 4 weeks. The data illustrates that on the trip to work there is no direct effect of car-choice habits on travel mode choice additional to the personal norm, but a moderating effect of habit strength on the relation between personal norm and travel mode choice. It is argued that different levels of specificity of habit lead either to a moderating effect of habit: (strong specific habit) or an additional direct effect (weak specific habit).

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