Argues that Aristotle's psychology is shaped by his critical reception of earlier theories of soul, including the Presocratic and Platonic.

Jason W. Carter is Teaching Fellow in Philosophy at the University of Edinburgh. His work has been published in journals including Phronesis and the Journal of the History of Philosophy.

Introduction to hylomorphic psychology; Part I. Aristotle's Methodology of Psychological Inquiry: 1. Definition, explanation and psychological inquiry; 2. Definition, explanation and the soul-body relation; Part II. Earlier Theories of Psychological Motion: 3. Plato's psychology; 4. Democritus' psychology; 5. Xenocrates' psychology; 6. Harmonic psychology; Part III. Earlier Theories of Psychological Cognition: 7. Empedocles' psychology; 8. Anaxagoras' psychology; Part IV. Earlier Theories and Two Psychological Puzzles: 9. The puzzle of the soul's uniformity; 10. The puzzle of the soul's divisibility; Conclusion: hylomorphic psychology as a dualism.