Delta Theory and Psychosocial Systems
The Practice of Influence and Change

This book establishes the foundation for a true scientific applied psychology, a theory of how human influence induces change in others.

Roland G. Tharp (Author)

9781107531734, Cambridge University Press

Paperback / softback, published 2 July 2015

206 pages, 11 b/w illus.
23 x 15.3 x 1.1 cm, 0.36 kg

"...One learns a lot by reading [his] book.... This relatively brief book has range, and the author knows many things, most of which he cites and uses to explain his universal theory."
–Dr. Kurt Salzinger, Senior Scholar in Residence, Hofstra University, PsycCRITIQUES

Delta Theory establishes the foundation for a true scientific applied psychology, a theory of how human influence induces change in others. Delta Theory is unified and universal, applying to all cultures, historical periods and goals for change. It integrates concepts and research from psychology, sociology, anthropology, evolution theory, philosophy, psychoneurology, cognitive science and cultural-historical-activity theory. Yet Delta Theory is clear, economical and elegant, with a full exposition of tactics for its practices. Rich examples are drawn from professional practices, but also from the creation and operations of criminals, healing ceremonies of indigenous peoples, and cross-species comparisons. This book ultimately seeks to describe how influence works, how it could be improved and how it can be resisted.

Part I. The Theory of Influence and Change: 1. Introduction and overview
2. Psychosocial systems and the exercise of influence
3. The zone of proximal development, activity, and semiotics
4. The means of influence
5. The organization of activity
6. Unifying the study of culture and psychology: philosophical and scientific Issues
Part II. The Practice of Influence and Change: 7. Influencing and change: delta theory of practice
8. A natural history museum of influence and change: dioramas
9. Who influences? The triadic model of influence and change
10. Basic tactics and strategy in designing influence
11. Cultural patterns in the practice of influence
12. Challenges, research, and future development.

Subject Areas: Educational psychology [JNC], Child & developmental psychology [JMC]