Document Type



Much behavior development is cumulative and hierarchical in
that subsequent learning is dependent on prior learning. The
behavior or behavioral changes that produce subsequent
important behavioral changes are referred to as basic behavioral
repertoires or behavioral cusps. This progression of learning is
called "cumulative-hierarchical learning," and it may be an
important concept for understanding much complex human
behavior. Despite its potential importance, there has been little
systematic study of the concept within behavior analysis or
psychology in general, which limits our understanding of complex
human behavior. One reason for the lack of research may be the
difficulty in studying cumulative-hierarchical learning and
identifying behavioral cusps. Methods to study cumulativehierarchical
learning are described.