Abstract
This paper examines the relationship between price changes and customer defection levels in a ‘subscription’ type market, namely car insurance. Two regression models are constructed to estimate this relationship, one model for younger customers and another for older customers. The regression models fit well to the defection rates associated with different levels of price changes. The analysis also shows that the impact of price decreases on defection rates is less than the impact of price increases, consistent with ‘loss aversion’. The paper notes that models of this type should offer true predictive ability and therefore tests the ability of the model to predict defection rates for new data. That is, rather than fitting new models to the new data, the analysis fits the original models to new data. The models performed comparatively poorly when fit to new data, particularly for price increases. The paper concludes that multiple sets of data are needed to develop and validate predictive models.
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