Download or read book Born Together Reared Apart written by Nancy L. Segal and published by Harvard University Press. This book was released on 2012-06-18 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Minnesota Study of Twins Reared Apart startled scientists by demonstrating that twins reared apart are as alike, across a number of personality traits and other measures, as those raised together, suggesting that genetic influence is pervasive. Segal offers an overview of the study’s scientific contributions and effect on public consciousness.
Download or read book Deliberately Divided written by Nancy L. Segal and published by Rowman & Littlefield. This book was released on 2021-11-08 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 2022 Choice Reviews Outstanding Academic Title Takes the first in-depth look at the New York City adoption agency that separated twins and triplets in the 1960s, and the controversial and disturbing study that tracked the children’s development while never telling their adoptive parents that they were raising a “singleton twin.” In the early 1960s, the head of a prominent New York City Child Development Center and a psychiatrist from Columbia University launched a study designed to track the development of twins and triplets given up for adoption and raised by different families. The controversial and disturbing catch? None of the adoptive parents had been told that they were raising a twin—the study’s investigators insisted that the separation be kept secret. Here, Nancy Segal reveals the inside stories of the agency that separated the twins, and the collaborating psychiatrists who, along with their cadre of colleagues, observed the twins until they turned twelve. This study, far outside the mainstream of scientific twin research, was not widely known to scholars or the general public until it caught the attention of documentary filmmakers whose recent films, Three Identical Strangers and The Twinning Reaction,left viewers shocked, angered, saddened and wanting to know more. Interviews with colleagues, friends and family members of the agency’s psychiatric consultant and the study’s principal investigator, as well as a former agency administrator, research assistants, journalists, ethicists, attorneys, and—most importantly--the twins and their families who were unwitting participants in this controversial study, are riveting. Through records, letters and other documents, Segal further discloses the investigators’ attempts to engage other agencies in separating twins, their efforts to avoid media exposure, their worries over informed consent issues in the 1970s and the steps taken toward avoiding lawsuits while hoping to enjoy the fruits of publication. Segal's spellbinding stories of the twins’ separation, loss and reunion offers readers the behind-the-scenes details that, until now, have been lost to the archives of history.
Download or read book Someone Else s Twin written by Nancy L. Segal and published by Prometheus Books. This book was released on 2011-07-19 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combination of a riveting true story and cutting-edge twin research makes this book an irresistible page-turner. Identical twins Begoña and Delia were born thirty-eight years ago in Spain’s Canary Islands. Due to chaotic conditions at the hospital or simple human error, the unthinkable happened: Delia was unintentionally switched with another infant in the baby nursery. This fascinating story describes in vivid detail the consequences of this unintentional separation of identical twin sisters. The author considers not only the effects on these particular sisters, but the important implications of this and similar cases for questions concerning identity, familial bonds, nature-nurture, and the law.
Download or read book Accidental Brothers written by Nancy L. Segal and published by Macmillan + ORM. This book was released on 2018-04-17 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A unique window into human behavior and development." —Steven Pinker The riveting story of two sets of identical twins separated at birth and improbably reunited as adults, a dream case for exploring nature and nurture. Accidental Brothers tells the unique story of two sets of identical Colombian twin brothers who discovered at age 25 that they were mistakenly raised as fraternal twins—when they were not even biological brothers. Due to an oversight that presumably occurred in the hospital nursery, one twin in each pair was switched with a twin in the other pair. The result was two sets of unrelated “fraternal” twins—Jorge and Carlos, who were raised in the lively city of Bogotá; and William and Wilber, who were raised in the remote rural village of La Paz, 150 miles away. Their parents and siblings were aware of the enormous physical and behavioral differences between the members of each set, but never doubted that the two belonged in their biological families. Everyone’s life unraveled when one of the twins—William—was mistaken by a young woman for his real identical twin, Jorge. Her “discovery” led to the truth—that the alleged twins were not twins at all, but rather unrelated individuals who ended up with the wrong families. Blending great science and human interest, Accidental Brothers by Nancy L. Segal and Yesika S. Montoya will inform and entertain anyone interested in how twin studies illuminate the origins of human behavior, as well as mother-infant identification and the chance events that can have profound consequences on our lives.
Download or read book The Resemblance Between Twins written by Sir Ronald Aylmer Fisher and published by . This book was released on 1926 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Twin Mythconceptions written by Nancy L. Segal and published by Academic Press. This book was released on 2017-02-08 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twin Mythconceptions: False Beliefs, Fables, and Facts about Twins sheds new light on over 70 commonly held ideas and beliefs about the origins and development of identical and fraternal twins. Using the latest scientific findings from psychology, psychiatry, biology, and education, the book separates fact from fiction. Each idea about twins is described, followed by both a short answer about the truth, and then a longer, more detailed explanation. Coverage includes embryology of twins, twin types, intellectual growth, personality traits, sexual orientation of twins, marital relationships, epigenetic analyses, and more. Five appendices cover selected topics in greater depth, such as the frequency of different twin types and the varieties of polar body twin pairs. This book will inform and entertain behavioral and life science researchers, health professionals, twins, parents of twins, and anyone interested in the fascinating topic of twins. - Identifies common misunderstandings about twins - Provides scientific answers to questions about twins - Encompasses the biology, psychology, genetics, and personality of twins - Includes discussion of identical, fraternal same-sex, and fraternal opposite-sex twins - Allows for quick answers to common questions and more detailed explanations
Download or read book Heredity Environment and Personality written by John C. Loehlin and published by University of Texas Press. This book was released on 2014-11-06 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reports on a study of 850 pairs of twins who were tested to determine the influence of heredity and environment on individual differences in personality, ability, and interests. It presents the background, research design, and procedures of the study, a complete tabulation of the test results, and the authors’ extensive analysis of their findings. Based on one of the largest studies of twin behavior conducted in the twentieth century, the book challenges a number of traditional beliefs about genetic and environmental contributions to personality development. The subjects were chosen from participants in the National Merit Scholarship Qualifying Test of 1962 and were mailed a battery of personality and interest questionnaires. In addition, parents of the twins were sent questionnaires asking about the twins’ early experiences. A similar sample of nontwin students who had taken the merit exam provided a comparison group. The questions investigated included how twins are similar to or different from nontwins, how identical twins are similar to or different from fraternal twins, how the personalities and interests of twins reflect genetic factors, how the personalities and interests of twins reflect early environmental factors, and what implications these questions have for the general issue of how heredity and environment influence the development of psychological characteristics. In attempting to answer these questions, the authors shed light on the importance of both genes and environment and form the basis for different approaches in behavior genetic research.
Download or read book Entwined Lives written by Nancy L. Segal and published by Dutton Adult. This book was released on 1999 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: A groundbreaking study of twins brings together the latest scientific research and case studies to explore the complexities of human behavior and development as it examines such topics as twins separated at birth, pseudotwins, the loss of a twin, the implications of new fertility drugs, and more. 10,000 first printing. Tour.
Download or read book Twins a Study of Heredity and Environment written by Horatio H. Newman and published by Franklin Classics Trade Press. This book was released on 2018-11-11 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Indivisible by Two written by Nancy L. Segal and published by Harvard University Press. This book was released on 2005 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: A leading expert on twins delves into the stories behind her research to reveal the profound joys and real-life traumas of 12 remarkable sets of twins, triplets, and quadruplets. Segal unravels these moving stories with an eye for the challenges that life as a twin (or triplet or quadruplet) can pose to parents, friends, and spouses, as well as the twins themselves.
Download or read book The Trouble with Twin Studies written by Jay Joseph and published by Routledge. This book was released on 2014-11-20 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Trouble with Twin Studies questions popular genetic explanations of human behavioral differences based upon the existing body of twin research. Psychologist Jay Joseph outlines the fallacies of twin studies in the context of the ongoing decades-long failure to discover genes for human behavioral differences, including IQ, personality, and the major psychiatric disorders. This volume critically examines twin research, with a special emphasis on reared-apart twin studies, and incorporates new and updated perspectives, analyses, arguments, and evidence.
Download or read book Twin Dilemmas written by Barbara Klein and published by Routledge. This book was released on 2017-06-26 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of how twins relate to each other and their single partners is explored through life stories and clinical examples in this telling study of twin interconnections. While the quality of a nurturing family life is crucial, Dr. Klein has found there are often issues with separation anxiety, loneliness, competition with each other, and finding friendships outside of twinship. When twin lives are entwined because of inadequate parenting and estrangement, twin loss is possible and traumatic, creating a crippling fear of expansiveness—an inability to be yourself. Therapists and twins seeking an understanding of twin relationships will find this clinically compelling book a valuable resource.
Download or read book Twin and Triplet Psychology written by Audrey Sandbank and published by Routledge. This book was released on 2003-09-02 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information on the special needs and natures of twins and multiples is often difficult for professionals to obtain. Twin and Triplet Psychology fills this gap, helping professionals to be better-equipped to offer advice to parents and twins alike. Examining the psychology of twinship throughout the lifespan, the book includes chapters on: * twins in-utero temperament development and inter-twin behaviour before and after birth * antenatal and postnatal influences on family relationships * twins with special needs * the death of a twin * twins in secondary school and adolescence.
Download or read book Twin Births and Twins from a Hereditary Point of View written by Gunnar Dahlberg and published by . This book was released on 1926 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methodology for Genetic Studies of Twins and Families written by M. Neale and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few would dispute the truth of the statement `People are Different', but there is much controversy over why. This book authoritatively explains the methods used to understand human variation, and extends them far beyond the primary `nature or nurture' question. After chapters on basic statistics, biometrical genetics, matrix algebra and path analysis, there is a state-of-the-art account of how to fit genetic models using the LISREL package. The authors explain not only the assumptions of the twin method, but how to test them. The elementary model is expanded to cover sex limitation, sibling interaction, multivariate and longitudinal data, observer ratings, and twin-family studies. Throughout, the methods are illustrated by applications to diverse areas such as obesity, major depression, alcohol comsumption, delinquency, allergies, and common fears.
Download or read book The mental resemblance of twenty six pairs of twins written by Kenneth Bernard White and published by . This book was released on 1931 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Twin Studies written by Grant C Townsend and published by University of Adelaide Press. This book was released on 2015-10-08 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is about an ongoing long-term research initiative led by researchers from the School of Dentistry at the University of Adelaide. The aim of this book is to provide an overview of the studies of the teeth and faces of Australian twins and their families that have extended over more than thirty years.
