Overview

Matlock’s analysis of Twenty Cases Suggestive of Reincarnation provides a comprehensive historical and methodological examination of how one of parapsychology’s most influential works came into being.¹ The book, first published in 1966 in the Proceedings of the American Society for Psychical Research and later reprinted by the University Press of Virginia in 1974, has become a classic text that introduced reincarnation-type cases to both parapsychologists and the broader academic community. Matlock’s work draws extensively on unpublished correspondence and materials housed at the Division of Perceptual Studies at the University of Virginia and the Parapsychology Foundation, allowing him to move beyond earlier published accounts and offer a more detailed portrait of Stevenson’s engagement with parapsychology and the lengthy process that led to the book’s publication.

The significance of this analysis lies not merely in documenting historical facts but in addressing longstanding criticisms of Stevenson’s methodology and demonstrating how his research choices shaped the presentation and reception of reincarnation cases. By examining the composition of Twenty Cases, Matlock illuminates the intellectual and practical considerations that guided Stevenson’s work and provides context for understanding both the book’s strengths and its perceived limitations.

Stevenson’s Background and Career Transition

Ian Stevenson was trained as a physician and later as a psychiatrist, with significant contributions to biochemistry, psychosomatic medicine, and other medical fields before turning to parapsychology in mid-career.¹ His transition to reincarnation research was not abrupt but rather emerged from his growing conviction that claims of past-life memory might shed light on unresolved problems in medicine and psychiatry. Stevenson held a tenured position as Chair of the Department of Psychiatry at the University of Virginia Medical Center when he began investigating reincarnation-type cases around 1960. His work was supported financially by Chester Carlson, inventor of the Xerox process, who endowed a chair that Stevenson occupied as Carlson Professor of Psychiatry beginning in 1964.

In 1967, Stevenson resigned as chairman of the Department of Psychiatry to establish a Division of Parapsychology (later renamed the Division of Personality Studies) within the department, dedicating himself entirely to psychical research. This institutional commitment, backed by Carlson’s continued annual donations and a substantial bequest of $1,000,000 upon Carlson’s death in 1968, provided Stevenson with the resources and freedom to pursue his reincarnation research systematically.² The establishment of this division represented a remarkable institutional recognition of parapsychology within a major medical school, an achievement that reflected both Stevenson’s standing in academic medicine and his determination to investigate reincarnation claims with scientific rigor.

Development of the Collection

The development of Twenty Cases was a lengthy process shaped by Stevenson’s evolving understanding of reincarnation-type cases and his growing network of collaborators. Matlock’s access to unpublished materials from the Division of Perceptual Studies and the Parapsychology Foundation reveals that the book’s composition involved sustained correspondence and consultation with colleagues, institutional support, and careful deliberation about which cases to include and how to present them.¹ Rather than a hasty compilation, Twenty Cases emerged from years of field investigation, case analysis, and editorial refinement.

Stevenson’s approach to case selection reflected his desire to present the full range of phenomena associated with reincarnation-type cases. The cases reported in Twenty Cases come from India, Ceylon (now Sri Lanka), Lebanon, Brazil, and the United States (the Tlingit Indians of Alaska), deliberately chosen to demonstrate geographical and cultural diversity.² All subjects were young children at the time they claimed to have lived before, a criterion that Stevenson maintained throughout his research. The collection includes both evidentially strong and weak cases, cases among strangers and within families, cases with pronounced behavioral features, and cases with birthmarks or congenital deformities allegedly related to the previous person’s death. One case involved a change of sex between the previous person and the subject, and another presented the rare phenomenon of the previous person dying after the birth of the subject.

The twenty cases were selected from approximately 200 personally investigated by Stevenson, a selection process that itself reveals important methodological choices.² Rather than presenting only the strongest cases, Stevenson deliberately included weaker examples to illustrate the variety of features that characterize reincarnation-type cases. This inclusive approach served both pedagogical and scientific purposes: it provided readers with a comprehensive picture of the phenomenon while avoiding the appearance of cherry-picking evidence.

Case Selection and Composition

Matlock’s detailed examination of how individual cases were selected and presented reveals the careful thought Stevenson invested in the book’s structure and content. The composition of Twenty Cases was not arbitrary but reflected Stevenson’s conviction that reincarnation could illuminate medical and psychiatric problems. Matlock notes that Stevenson expected the monograph to be recognized as making an important contribution and believed it would lead to public funding for further research on reincarnation.¹ Sixty years after publication, however, such public funding has not materialized, a fact that Matlock attributes partly to Stevenson’s emphasis on proof-oriented aspects of the cases to the neglect of other issues that might have connected more easily with mainstream medical and scientific interests.

One particularly instructive case examined by Matlock is that of Gnanathilaka Baddevithana, one of the first reincarnation cases Stevenson studied in 1961 and reported in Twenty Cases. This case had previously been investigated by H. S. S. Nissanka, whose records of interviews were kept in writing or on tape, making it one of fewer than three dozen published cases with records produced before past-life memories were verified.³ By comparing Nissanka’s and Stevenson’s independent investigations, Matlock was able to evaluate the extent to which Stevenson’s oft-criticized practices of spending only a few days in the field and working through interpreters impacted his presentation and conclusions. Matlock found that while these practices led Stevenson to miss considerable detail, they had no effect on his evaluation of the case itself.³ This finding suggests that criticisms of Stevenson’s methods may be misguided and that some cases he reported may be phenomenologically richer and evidentially stronger than he presented them as being.

Legacy and Impact

Twenty Cases Suggestive of Reincarnation proved to be a commercial success for the American Society for Psychical Research and was republished in 1974 by the University Press of Virginia.¹ A paperback edition introduced in 1980 remains in print, a highly unusual circumstance for a university press publication. The book is not only Stevenson’s best-selling collection of case reports but also the only one of his several books that many readers have encountered. It has become a classic in parapsychology and reincarnation studies, justifying the updated historical examination that Matlock provides.

The enduring influence of Twenty Cases extends beyond parapsychology into religious studies, anthropology, and popular culture. The book introduced reincarnation-type cases to audiences who might otherwise never have encountered systematic documentation of such phenomena. By presenting detailed case reports with attention to investigative methodology, Stevenson established a new standard for the study of spontaneous cases in parapsychology. The cases in Twenty Cases continue to be cited in scholarly discussions of reincarnation, survival of death, and the nature of consciousness.

Methodological Implications

Matlock’s analysis of Twenty Cases has important implications for understanding reincarnation research methodology and for addressing criticisms that have been leveled against Stevenson’s approach. The examination of the Gnanathilaka Baddevithana case demonstrates that Stevenson’s brief field visits and reliance on interpreters, while potentially limiting in some respects, did not compromise his core investigative findings.³ This finding challenges the assumption that such methodological constraints necessarily undermine the validity of case reports.

More broadly, Matlock’s work on reincarnation case study methodology emphasizes the importance of establishing secure timelines, documenting early statements before verification, and carefully distinguishing between what can be verified and what remains speculative.⁴ He recommends improvements in case study methodology, reporting standards, and statistical analysis that might help future researchers address criticisms, overcome confirmation bias, and reach scientists and scholars open to following research findings where they lead. These recommendations emerge from Matlock’s detailed engagement with both historical cases and contemporary debates in reincarnation research.

The composition of Twenty Cases also reflects Stevenson’s understanding that reincarnation-type cases represent a distinct category of spontaneous case phenomena worthy of systematic investigation. By selecting cases that illustrated the variety of features present in such cases, Stevenson helped define what would become known as “cases of the reincarnation type.” This definitional work, evident in the structure and content of Twenty Cases, has shaped how subsequent researchers conceptualize and investigate reincarnation claims.