Results 61 to 70 of about 313,688 (226)

Twinning rate trend in a population sample from the city of São Paulo, Brazil

Genetics and Molecular Biology, 2003
A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was
Gloria M.D.D. Colletto
doaj   +1 more source

The nature and nurture of primary and secondary callous–unemotional traits: evidence from two independent twin samples

Journal of Child Psychology and Psychiatry, EarlyView.
Background Callous–unemotional (CU) traits identify youth with more severe and chronic trajectories of conduct problems. However, the etiology of CU traits may be heterogeneous, undermining the search for effective treatments. The level of co‐occurring anxiety has been used to identify “primary” (lower anxiety) versus “secondary” (higher anxiety ...
Rachel C. Tomlinson, Patrizia Pezzoli, Essi Viding, Stephane A. De Brito, Kelly L. Klump, S. Alexandra Burt, Luke W. Hyde   +6 more
wiley   +1 more source

Psycho‐social factors associated with disagreement between prospective and retrospective measures of childhood maltreatment

Journal of Child Psychology and Psychiatry, EarlyView.
Background Prospective and retrospective measures of childhood maltreatment often identify different individuals and are differentially associated with psychopathology. This study examines psycho‐social factors that may explain discrepancies between these measures.
Oonagh Coleman, Jessie R. Baldwin, Louise Arseneault, Helen L. Fisher, Terrie E. Moffitt, Andrea Danese   +5 more
wiley   +1 more source

Gender differences in like-sex middle-aged twins: an extended network analysis of depressive symptoms, cognitive functions and leisure activities

European Psychiatry
Background Depression affects twice as many women as men. Risk factors for depression certainly impact this difference, but their strong interconnectedness challenges the assessment of standalone contributions.
Daiyan Zhang, Maria Semkovska
doaj   +1 more source

The importance of separation-individuation process in the treatment course of a monozygotic twin pair concordant for anorexia nervosa: a case report

Psychiatry and Behavioral Sciences, 2017
Anorexia nervosa is a serious mental illness with marked morbidity and mortality. Twin studies on anorexia nervosa concluded that there was a higher concordance rate in monozygotic twins (56%) than in dizygotic twins (7%).
Mehmet Hamdi Orum, Aysun Kalenderoglu, Mahmut Zabit Kara, Oguzhan Bekir Egilmez   +3 more
doaj   +1 more source

Are Wednesday's Children Full of Woe? Children's Differences in Personality Are Independent of Day of Birth

Journal of Personality, EarlyView.
ABSTRACT Introduction Nursery rhymes, which are rich in literary devices, benefit children's language learning. Less is known about the influence that nursery rhymes' messages may have on children's development. We focused on “Monday's Child,” a popular nursery rhyme that alleges children's day of the week of birth forecasts their differences in ...
Emily Wood, Anna Brown, Kirsty Wilding, Florence A. R. Oxley, Helen L. Fisher, Louise Arseneault, Avshalom Caspi, Terrie E. Moffitt, Sophie von Stumm   +8 more
wiley   +1 more source

Medical demography and epidemiology: dizygotic twins [PDF]

European Journal of Epidemiology, 2009
Demography is the statistical study of populations, epidemiology of health of populations. Fascinating challenges for future research, shared by epidemiology and demography, are to be found in the human life course, how the life course is transmitted over generations, how the healthy life is shaped by dynamics within the life course and how the life ...
openaire   +2 more sources

Co-aggregation and heritability of organ-specific autoimmunity: a population-based twin study

European Journal of Endocrinology, 2020
Objective Co-aggregation of autoimmune diseases is common, suggesting partly shared etiologies. Genetic factors are believed to be important, but objective measures of environmental vs heritable influences on co-aggregation are absent.
J. Skov, D. Eriksson, R. Kuja-Halkola, J. Höijer, S. Gudbjörnsdottir, A. Svensson, P. Magnusson, J. Ludvigsson, O. Kämpe, S. Bensing   +9 more
semanticscholar   +1 more source

Genetic Susceptibility to Periodontitis

Journal of Periodontal Research, EarlyView.
Aim: The aim of this narrative review was to identify genes carrying risk alleles associated with an increased risk of periodontitis and to place them in a biological context. Methods: The literature was reviewed based on predefined criteria. Results: The identified genes largely fall into functions linking immune response with tissue repair. The genes
Gesa M. Richter, Arne S. Schaefer
wiley   +1 more source

Sleep and Maladaptive Personality Traits: A Twin Study

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep is essential for human functioning, but little attention has been paid to the interplay between sleep and maladaptive personality traits. We examined genetic and environmental associations between sleep and four maladaptive domains (MDs)—Negative Affectivity, Detachment, Disinhibition, and Psychoticism—within the framework of the DSM‐5 ...
Ziyu Ren, Jarrod M. Ellingson, Christian Hopfer, Robert F. Krueger, Zlatan Krizan, Kristian E. Markon, Deniz S. Ones, Zoë Panchal, J. Megan Ross, Scott Vrieze, Stephanie M. Zellers, Matt McGue   +11 more
wiley   +1 more source