The aim of this paper is to evaluate to what extent Clemens Kroneberg's and Thomas Kron's multivariable explanation models of human behavior, which were published in this journal, can be regarded as progress in theoretical development. It discusses alternative research approaches from a methodological point of view in order to judge this "progress." The first alternative approach is the construction of one-dimensional theories, like, for example, classical Rational Choice Theory, which are easily falsifiable and usually are falsified. The second alternative is the construction of arbitrary systems of ideal types, which are not falsifiable and therefore unable to provide explanations, but which can easily be used as a scheme of interpretation. The research approach of Kroneberg and Kron, which intends to explain but also to consider different variables, does indeed represent important progress. However, the problem with these models is that they cannot fulfill their own demands. Kron's model is either not falsifiable or already falsified, and the falsifiability of Kroneberg's theory is extremely questionable.