Tobias G. Lindstad is an independent researcher and a clinical psychologist in Norway. His research concerns the relevance of epistemology and metaphysics for advancing the scientific basis of psychology, psychotherapy research and mental health care services.Erik Stänicke is Associate Professor at the Department of Psychology at the University of Oslo, Norway. He has published papers and books on psychotherapy research, psychoanalysis, conceptual research and philosophy of science. He is a fellow researcher in An intensive process-outcome study of the interpersonal aspects of psychotherapy at UiO. He is a psychoanalyst and president of the Norwegian Psychoanalytic Society.Jaan Valsiner is Professor of Cultural Psychology at Aalborg University, and University Professor at Sigmund-Freud-Privatuniverstät Wien-Berlin. In 2013-18 he was Niels Bohr Professor of Cultural Psychology at Aalborg University in Denmark, where he created Europe’s first research Centre on cultural psychology. He is the founding editor of the journal Culture & Psychology and chief editor of Integrative Psychological and Behavioral Science. Among his many publications are the recent books General Human Psychology; Foundations for a Science and Sensuality in Human Living; The Cultural Psychology of Affect.

• Chapter 1.Editorial Introduction.- Part I: Smedslund’s work in historical perspective.- Chapter 2. A Pre-history of my Present Position.- Chapter 3. A Place for Persons: The Formal Systems of Smedslund and Ossorio.- Chapter 4.The concept of Correlation in adults comes of age.- 5. The Socrates of Modern Psychology: A Historical View of Smedslund’s Common Sense Perspective.- Part II: Psychology as science; concepts and epistemology.- Chapter 6. Meanings of Words and the Possibilities of Psychology: Reflections on Jan Smedslund's Psycho-logic.- Chapter 7. The Case for Psychological Quietism; Wittgensteinian propaedeutics in Smedslund's writings.- Chapter 8. The Linguistic Fore-structure of Psychological Explanation.- Chapter 9. Jan Smedslund and Psychologic; The Problem of psychologism and the nature of language.- Chapter 10. Can Common Sense Change?Psycho-logic, Synthetic thinking and the Challenge of Changing Language.- Chapter 11. How to avoid throwing the baby out with the bathwater; Abduction is the solution to pseudo-empiricism.- Chapter 12. A priori Afterthoughts; Continuing the Dialogue on Psycho-logic.- Part III: Psychology as science; Research extensions.- Chapter 13. Neuro-Ornamentation in Psychological Research.- Chapter 14. Experimental Psychology and Distortions of Common Sense.- Chapter 15. Extending Smedslund's psycho-logic system into a social theory.- Chapter 16. Smedslund and The Psychological Style of Reasoning.- Chapter 17. Wittgenstein’s revenge: How semantic algorithms can help survey research escape Smedslund’s labyrinth.- Part IV: Psychology as practice.- 18. Professional Practice without Empirical Evidence: The Psycho-Logic of Trust.- Chapter 19. Psychotherapy: An Illusion That Works.- Chapter 20. Bricoleurs and Qualitative Theory-Building Research: Responses to Responsiveness.- Chapter 21. Working with Stuckness in psychotherapy; Bringing together the Bricoleur-model and Pluralistic Practices.- Chapter 22. The Pragmatic status of Psychoanalytic theory; A Plea for Thought-models.