Download or read book Developmental and Fetal Origins of Differences in Monozygotic Twins written by Alexandra Matias and published by Academic Press. This book was released on 2020-05-15 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developmental and Fetal Origins of Differences in Monozygotic Twins: From Genetics to Environmental Factors examines the major causes of discordance in monozygotic twins, from genetic, to environmental influences, including discussions on the genetic, epigenetic, fetal and environmental factors. Twin differences discussed include malformations, deformations and disruptions secondary to inequitable division of the early embryo, chromosome and single gene mosaicism, Nonrandom X chromosome inactivation, mitochondrial heteroplasmy, epigenetic variation, and variable and inequitable blood supply, among other influences. Differences in hemoglobin levels, placentation and amniotic fluid are also examined, while full color images illustrate discordant anomalies and twin differences throughout. - Examines the major causes of discordance in monozygotic twins and their relevance for future studies and clinical management - Discusses NIPT in MZ twins, twin imaging during fetal development, blood tests and forensic analysis - Features contributions from international experts in twin genetics and developmental biology

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 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 and Higher order Pregnancies written by Asma Khalil and published by Springer Nature. This book was released on 2021-12-02 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive update on the management of multiple pregnancy, which is becoming more common, and is associated with increased maternal and perinatal mortality and morbidity. Offering a practical guide and a wealth of videos, images and illustrations, the book will help clinicians to feel more confident when caring for women with multiple pregnancy. Its main objectives are: To increase the level of knowledge of healthcare professionals involved in the care of these women; To update their knowledge in keeping with the recommendations of the latest national and international guidelines; and To promote a multidisciplinary approach to the management of women with multiple pregnancy.

Download or read book Twin Research for Everyone written by Adam D. Tarnoki and published by Elsevier. This book was released on 2022-08-22 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twin Research: Biology, Health, Epigenetics, and Psychology is a comprehensive, applied resource in twinning and twin studies that is grounded in the most impactful findings from twin research in recent years. While targeted to undergraduate and graduate students, this compendium will prove a valuable resource for scholars already familiar with twin studies, as well as those coming to the field for the first time. Here, more than forty experts across an array of disciplines examine twinning and twin research methodologies from the perspectives of biology, medicine, genetic and epigenetic influences, and neuroscience. Chapters provide clear instruction in both basic and advanced research methods, family and parenting aspects of twinning, twin studies as applied across various disease areas and medical specialties, genetic and epigenetic determinants of differentiation, and academic, neurological and cognitive development. The presentation of existing studies and methods instruction empowers students and researchers to apply twin-based research and advance new studies across a range of biomedical and behavioral fields, highlighting current research trends and future directions. Offers unique insights into twinning rates, mechanisms and factors surrounding twinship Provides clear instruction on both basic and advanced twin research methods and study design Features leading international experts in twin biology, genetics, health and psychology Examines findings from recent twin studies across a broad array of health and behavioral studies

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.

Download or read book Untangling Twinning written by Maureen L. Condic and published by University of Notre Dame Pess. This book was released on 2020-02-28 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and philosophers have long struggled to answer the questions of when human life begins and when human life has inherent value. The phenomenon of identical (monozygotic) twinning presents a significant challenge to the view that human life and human personhood begin at conception. The fact that a single embryo can split to generate two (or more) genetically identical embryos seems to defy the notion that prior to splitting an embryo can be a single human individual. In Untangling Twinning, Maureen Condic looks at the questions raised by human twinning based on a unique synthesis of molecular developmental biology and Aristotelian philosophy. She begins with a brief historical analysis of the current scientific perspective on the embryo and proceeds to address the major philosophic and scientific concerns regarding human twinning and embryo fusion: Is the embryo one human or two (or even more)? Does the original embryo die, and if not, which of the twins is the original? Who are the parents of the twins? What do twins, chimeras, cloning, and asexual reproduction in humans mean? And what does the science of human embryology say about human ensoulment, human individuality, and human value? Condic's original approach makes a unique contribution to the discussion of human value and human individuality, and offers a clear, evidence-based resolution to questions raised by human twinning. The book is written for students and scholars of bioethics, scientists, theologians, and attorneys who are involved in questions surrounding the human embryo.

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 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 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 Biosocial Surveys written by National Research Council and published by National Academies Press. This book was released on 2008-01-06 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biosocial Surveys analyzes the latest research on the increasing number of multipurpose household surveys that collect biological data along with the more familiar interviewerâ€"respondent information. This book serves as a follow-up to the 2003 volume, Cells and Surveys: Should Biological Measures Be Included in Social Science Research? and asks these questions: What have the social sciences, especially demography, learned from those efforts and the greater interdisciplinary communication that has resulted from them? Which biological or genetic information has proven most useful to researchers? How can better models be developed to help integrate biological and social science information in ways that can broaden scientific understanding? This volume contains a collection of 17 papers by distinguished experts in demography, biology, economics, epidemiology, and survey methodology. It is an invaluable sourcebook for social and behavioral science researchers who are working with biosocial data.

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 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 Twins written by William Viney and published by Reaktion Books. This book was released on 2021-05-05 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human twins have many meanings and different histories. They have been seen as gods and monsters, signs of danger, death, and sexual deviance. They are taken as objects of wonder and violent repression, the subjects of scientific experiment. Now millions are born through fertility technologies. Their history is often buried in philosophies and medical theories, religious and scientific practices, and countless stories of devotion and tragedy. In this history of superstitions and marvels, fantasies and experiments, William Viney—himself a twin—shows how the use and abuse of twins has helped to shape the world in which we live. This book has been written not just for twins, but for anyone interested in their historical, global, and political impact.

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 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 Theory and Explanation in Social Psychology written by Bertram Gawronski and published by Guilford Publications. This book was released on 2015-01-07 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides the first authoritative explication of metatheoretical principles in the construction and evaluation of social-psychological theories. Leading international authorities review the conceptual foundations of the field's most influential approaches, scrutinizing the range and limits of theories in various areas of inquiry. The chapters describe basic principles of logical inference, illustrate common fallacies in theoretical interpretations of empirical findings, and outline the unique contributions of different levels of analysis. An in-depth look at the philosophical foundations of theorizing in social psychology, the book will be of interest to any scholar or student interested in scientific explanations of social behavior.