Social work has historically pulled together the theoretical bases of different professions to inform a "person-in-environment" perspective that is applied to helping disadvantaged populations. In fact, the social work profession distinguishes itself by highlighting the important role of social context in empowering disadvantaged people and promoting human and societal well-being (NASW, 1999).

Integral Theory provides a coherent way to integrate the pieces of the biopsychosocial-spiritual puzzle and offers a meta-theory capable of guiding person-in-environment applications. By organizing and integrating various theories and systems of thought, Integral Theory conceptualizes the knowledge base of the profession and explains the nature of social work. It transcends and includes all other social work theories, micro and macro. The four quadrants organize the recognition the social work profession already has about the individual person, the collective environment, the interior, the exterior, and the interactions between the interior and exterior of the individual and the collective. Social work has drawn on theories emanating from each of these quadrants in order to comprehensively address both person and environment. The following four quadrant chart organizes some of the theories commonly utilized by the social work profession:

Figure 1: The Four Quadrants of Theories used in Social Work

The upper two quadrants are oriented to the person, and the lower two quadrants are oriented to the collective. The left side is subjective/intersubjective, and the right side is objective/interobjective. The aspects of reality represented by these four quadrants mutually interact with one another and evolve together.