These notes, published in 1981, introduce the concept of the social multiplier: If the behavior of agents is positively influenced by what members of their reference group do, this enhances the power of economic incentives.

Although it is not possible, in general, to give a macro description of a micro model over the entire state space of the micro model, it is possible to aggregate exactly over a subspace. The set of micro states where aggregation is possible forms the aggregation set. The paper considers the...

The seasonal adjustment method proposed by Schlicht (1981) can be viewed as a method that minimizes non-stochastic deviations (perturbations). This interpretation gives rise to a critique of the seasonality criterion used there. A new seasonality criterion is proposed that avoids these...

A labor market is considered that is characterized by job competition over job ladders. Firms paying more for comparable jobs can attract workers with better background characteristics (with general human capital) and will lose fewer trained workers (with general and firm-specific human...

The essay contains a highly speculative theory of social change together with an application to the theory of labour management. It draws on previous work done by the author (1972, 1978), partly in collaboration with C.C.v.weizsäcker (Weizsäcker/Schlicht 1979). In Part I the proposed theory of...

The paper discusses a new seasonality hypothesis which is one part of a weighted regression approach for the decomposition of a time series into a trend, a seasonal component and an irregular component. It is shown that there exists a regression formulation leading, as in the descriptive...