Results 281 to 290 of about 785,061 (339)
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British Journal of Psychiatry, 1968
This study illustrates some of the constitutional and psychological complications of being a twin, some difficulties that may arise in formal diagnosis and the therapeutic importance of separation.
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This study illustrates some of the constitutional and psychological complications of being a twin, some difficulties that may arise in formal diagnosis and the therapeutic importance of separation.
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Twin Research, 2002
The Minnesota Twin Family Study is a longitudinal study of 11-year-old and 17-year-old twins and their parents designed to examine factors related to the etiology of substance abuse and related problems. At study intake, the twins and their parents participate in a day-long assessment in our laboratory that includes measures of endophenotypes (e.g ...
William G, Iacono, Matt, McGue
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The Minnesota Twin Family Study is a longitudinal study of 11-year-old and 17-year-old twins and their parents designed to examine factors related to the etiology of substance abuse and related problems. At study intake, the twins and their parents participate in a day-long assessment in our laboratory that includes measures of endophenotypes (e.g ...
William G, Iacono, Matt, McGue
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American Journal of Psychiatry, 1949
1. By means of the twin family method and up to the end of 1947, a representative sample of 1,602 twin index cases over 6o years of age was collected from both the general and institutionalized populations of the state of New York, in order to study the biological, social, and psychiatric problems of senescence under experiment-like, but mankind ...
F J, KALLMANN, G, SENDER
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1. By means of the twin family method and up to the end of 1947, a representative sample of 1,602 twin index cases over 6o years of age was collected from both the general and institutionalized populations of the state of New York, in order to study the biological, social, and psychiatric problems of senescence under experiment-like, but mankind ...
F J, KALLMANN, G, SENDER
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Clinical Genetics, 2012
Twin studies provide a method for estimating the heritability of phenotypes and for examining genetic and environmental relationships between phenotypes. We conducted a systematic review of twin studies of pain, including both clinical and experimental pain phenotypes. Fifty‐six papers were included, whereof 52 addressed clinical phenotypes.
C S, Nielsen +2 more
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Twin studies provide a method for estimating the heritability of phenotypes and for examining genetic and environmental relationships between phenotypes. We conducted a systematic review of twin studies of pain, including both clinical and experimental pain phenotypes. Fifty‐six papers were included, whereof 52 addressed clinical phenotypes.
C S, Nielsen +2 more
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Acta geneticae medicae et gemellologiae: twin research, 1987
AbstractIn order to reassess the relative importance of genetic and environmental factors in the development of myopia in Chinese schoolchildren, 90 pairs of MZ and 36 pairs of like-sex DZ twins were enrolled for detailed ophthalmological examination about their ocular refractions. Corneal curvatures and axial lengths were also measured.
L L, Lin, C J, Chen
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AbstractIn order to reassess the relative importance of genetic and environmental factors in the development of myopia in Chinese schoolchildren, 90 pairs of MZ and 36 pairs of like-sex DZ twins were enrolled for detailed ophthalmological examination about their ocular refractions. Corneal curvatures and axial lengths were also measured.
L L, Lin, C J, Chen
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Psychiatry Research, 1997
The role of genetic factors in panic disorder (PD) and sporadic panic attacks (SPAs) was investigated. A total of 120 twins recruited from the general population were interviewed for the presence of anxiety disorders and SPAs. A significantly higher concordance among MZ than DZ twins was found for PD (73% vs. 0%) but not for SPAs (57% vs. 43%).
Perna G +3 more
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The role of genetic factors in panic disorder (PD) and sporadic panic attacks (SPAs) was investigated. A total of 120 twins recruited from the general population were interviewed for the presence of anxiety disorders and SPAs. A significantly higher concordance among MZ than DZ twins was found for PD (73% vs. 0%) but not for SPAs (57% vs. 43%).
Perna G +3 more
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Twin Research and Human Genetics, 2006
AbstractVirtual twins (VTs; same-age unrelated siblings reared together from early infancy) have been studied at California State University (CSU), Fullerton since 1991. The current sample includes over 130 pairs. Past and current research have research have focused on siblings' similarities and differences in general intelligence and body size. Future
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AbstractVirtual twins (VTs; same-age unrelated siblings reared together from early infancy) have been studied at California State University (CSU), Fullerton since 1991. The current sample includes over 130 pairs. Past and current research have research have focused on siblings' similarities and differences in general intelligence and body size. Future
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Twin–Twin Transfusion Syndrome: A Population-Based Study
Obstetrics & Gynecology, 2004To study the incidence and mortality and morbidity rates of twin-twin transfusion syndrome in a complete population-based cohort in Nova Scotia.A population-based cohort study of all monochorionic diamniotic twin pregnancies of 20 weeks of gestation or longer born to Nova Scotia (Canada) residents between 1988 and 2000 was examined.
Samawal, Lutfi +4 more
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