Jay Joseph, Psy.D., is a clinical psychologist practicing in the San Francisco Bay Area. He is the author of three previous books, most recently The Trouble with Twin Studies: A Reassessment of Twin Research in the Social and Behavioral Sciences.

"In this engaging and incisive analysis, Jay Joseph not only reveals the bad science and false claims that characterise the search for 'schizophrenia' genes, he shows the futility of the entire enterprise, making links to the whole field of psychiatric genetics and to questionable research practices and replication crises across the behavioural sciences. A vital book for researchers, practitioners, psychiatric service users, students, science journalists and anyone concerned about the integrity of science and its communication." Mary Boyle, Emeritus Professor of Clinical Psychology, University of East London, UK"In this trenchant analysis, Jay Joseph offers the sober scrutiny this controversial subject so badly needs. Writing from rare depths of field knowledge, and with decades of active engagement, his often startling exposures of shoddy data and misleading conclusions will enlighten researchers and theorists and delight clinicians and students everywhere."Ken Richardson, Independent Researcher/Formerly Open University UK, Durham, UK

• Chapter 1: Introduction 2: Schizophrenia Molecular Genetic Research: Running on Empty? 3. Schizophrenia Family Studies 4. A Critique of the Classical Twin Method 5. Schizophrenia Twin Research 6. Schizophrenia Adoption Research 7. Schizophrenia and Genetics: Conclusions and Future Directions

Jay Joseph, Psy.D., is a clinical psychologist practicing in the San Francisco Bay Area. He is the author of three previous books, most recently The Trouble with Twin Studies: A Reassessment of Twin Research in the Social and Behavioral Sciences.

"In this engaging and incisive analysis, Jay Joseph not only reveals the bad science and false claims that characterise the search for 'schizophrenia' genes, he shows the futility of the entire enterprise, making links to the whole field of psychiatric genetics and to questionable research practices and replication crises across the behavioural sciences. A vital book for researchers, practitioners, psychiatric service users, students, science journalists and anyone concerned about the integrity of science and its communication." Mary Boyle, Emeritus Professor of Clinical Psychology, University of East London, UK"In this trenchant analysis, Jay Joseph offers the sober scrutiny this controversial subject so badly needs. Writing from rare depths of field knowledge, and with decades of active engagement, his often startling exposures of shoddy data and misleading conclusions will enlighten researchers and theorists and delight clinicians and students everywhere."Ken Richardson, Independent Researcher/Formerly Open University UK, Durham, UK

• Chapter 1: Introduction 2: Schizophrenia Molecular Genetic Research: Running on Empty? 3. Schizophrenia Family Studies 4. A Critique of the Classical Twin Method 5. Schizophrenia Twin Research 6. Schizophrenia Adoption Research 7. Schizophrenia and Genetics: Conclusions and Future Directions

Jay Joseph, Psy.D., is a clinical psychologist practicing in the San Francisco Bay Area. He is the author of three previous books, most recently The Trouble with Twin Studies: A Reassessment of Twin Research in the Social and Behavioral Sciences.

"In this engaging and incisive analysis, Jay Joseph not only reveals the bad science and false claims that characterise the search for 'schizophrenia' genes, he shows the futility of the entire enterprise, making links to the whole field of psychiatric genetics and to questionable research practices and replication crises across the behavioural sciences. A vital book for researchers, practitioners, psychiatric service users, students, science journalists and anyone concerned about the integrity of science and its communication." Mary Boyle, Emeritus Professor of Clinical Psychology, University of East London, UK"In this trenchant analysis, Jay Joseph offers the sober scrutiny this controversial subject so badly needs. Writing from rare depths of field knowledge, and with decades of active engagement, his often startling exposures of shoddy data and misleading conclusions will enlighten researchers and theorists and delight clinicians and students everywhere."Ken Richardson, Independent Researcher/Formerly Open University UK, Durham, UK

• Chapter 1: Introduction 2: Schizophrenia Molecular Genetic Research: Running on Empty? 3. Schizophrenia Family Studies 4. A Critique of the Classical Twin Method 5. Schizophrenia Twin Research 6. Schizophrenia Adoption Research 7. Schizophrenia and Genetics: Conclusions and Future Directions