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Contents: Foreword. Preface. Introduction. Part I: Ecological Theory and Philosophical Realism. William James's Radical Empiricism: A Foundation for Ecological Psychology. Edwin B. Holt and Philosophical Behaviorism. Part II: The Ecological Approach and Radical Empiricism. Perceiver-Environment Relations. Relations and Direct Perception. The Stream of Experience and Possible Knowledge. Part III: Ecological Psychology and the Psychological Field. Gestalt Psychology and the Ecological Approach. Ecobehavioral Science: The Ecological Approach of Roger Barker. Ecological Psychology and Ecobehavioral Science: Toward a Synthesis. Ecological Knowledge and Sociocultural Processes. Part IV: Conclusion. The Scope of Ecological Psychology.
A 2002 study studied this question.