The use of growth functions for estimating developments in consumer
demand is already rather old. In many books on 'mathematics for
economists' one can find one or more examples of growth functions,
however, usually without any economic considerations as a background.
Furthermore there are many econometric contributions on the subject
scattered over many books and journals. In this book - the English
translation of the author's doctoral thesis -, Dr. W.J. Oomens gives a
highly unified treatment of the subject. The book consists of two main
parts, preceded by an introduction and concluded by an application. The
first main part starts with a discussion of the general notions
underlying the theory of the development of demand for new consumer
durable goods and next describes the many models known from the
literature, using these general notions. Because of the unified
treatment the author succeeds in clearly ranking the different models,
in presenting the aspects they have in cornmon and in explaining the
properties which are different in the models being described. The
critical discussion of the existing models leads a.o. to a new model,
the 'heterogeneous generalized logistic model', in which environmental
variables are inserted into the purchase propensity function as well as
into the function for the variable saturation degree.