Results 111 to 120 of about 59,137 (242)
Second-trimester markers of fetal size in schizophrenia: a study of monozygotic twins [PDF]
, 1992 OBJECTIVE: Since the second prenatal trimester is the critical period of massive neural cell migration to the cortex, and fingertip dermal cells migrate to form ridges during this same period, the authors sought to determine whether there are differences
Bigelow, LB +4 more
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Sickness Absence and the Effects of Having a Spouse - Can twins reveal the selection effect? [PDF]
Individuals that are married are often found to be healthier than singles. A crucial issue is to distinguish if this is due to a selection effect or due to a true protective effect of partnership. The purpose of this study is to distinguish these effects
Nilsson, william
core +1 more source
A synchronized unique presentation of inguinal hernia in infantile twins
Egyptian Pediatric Association GazetteBackground Female structures such as the ovaries, fallopian tubes, ligaments, and uterus are rarely encountered inside a hernial sac. The prevalence of groin hernias containing parts of female genitalia remains unknown. Occurrence in monozygotic twins is
Srikanth Thiyagarajan +2 more
doaj +1 more source
EpigenomesBackground/Objectives: Human identical twins are born at a rate of 3–4 per 1000 live births. Many other mammals also occasionally produce monozygotic twins, referred to as sporadic polyembryony. The underlying mechanisms are unknown.
Jenny van Dongen +2 more
doaj +1 more source
Nature or Nurture? A Note on the Misinterpreted Twin Decomposition [PDF]
The classical twin model has often been used to determine whether variation in outcomes such IQ, schooling and other behavioral traits, originate from genetic endowments or environmental factors.
Stenberg, Anders
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Monozygotic Twinning in Mice [PDF]
Journal of Medical Genetics, 1965 Wallace, M E, Williams, D A
openaire +2 more sources
Improvements and Future Challenges in the Field of Genetically Sensitive Sample Designs [PDF]
Understanding the sources of individual differences beyond social and economic effects has become a research area of growing interest in psychology, sociology, and economics.
Frank M. Spinath
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Does Education Pay in Urban China? Estimating Returns to Education Using Twins [PDF]
This paper empirically estimates the returns to education using twins data that the authors collected from urban China. Our ordinary least-squares estimate shows that one year of schooling increases an individual¡¦s earnings by 8.4 percent. However, once
Hongbin Li +3 more
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Nature, Nurture and Egalitarian Policy: What Can We Learn from Molecular Genetics? [PDF]
This brief paper draws attention to molecular genetic research which may provide a new dimension to our understanding of how socioeconomic outcomes are generated. In particular, we provide an overview of the recently emerging evidence of gene-environment
Lundborg, Petter, Stenberg, Anders
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