The Nigerian Twin and Sibling Registry

2012 ◽  
Vol 16 (1) ◽  
pp. 282-284 ◽  
Author(s):  
Yoon-Mi Hur ◽  
Jong Woo Kim ◽  
Kee Wha Chung ◽  
Joong Sik Shin ◽  
Hoe-Uk Jeong ◽  
...  

Twin studies of Africans have been scarce although Africans have shown the highest twin birth rate in the world. As a parallel study of the South Korean Twin Registry, the Nigerian Twin and Sibling Registry (NTSR) was developed to understand causal influences on the development of cognitive abilities, personality, and mental health among Nigerians. Currently, 1,134 twins and 404 full- and half-siblings have been registered with NTSR. This article describes research background, goals, major recruitment strategies, measures, and future directions of the NTSR.

2009 ◽  
Vol 12 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Yoon-Mi Hur ◽  
Tae-Bok Song

AbstractUsing the South Korean national live birth data for the years 2003 to 2007, monozygotic (MZ) and dizygotic (DZ) twin birth rates were estimated and analyzed by maternal age, and parents of twins and those of singletons were compared in their level of education. During this period, while the MZ twin birth rate showed no change, the DZ twin birth rate increased up to 9.4 pairs per thousand births. This rate is close to five times as high as the natural DZ twinning rate in the South Korean population. The highest twinning rate occurred among mothers aged 30 to 34 years, followed by mothers aged 25 to 29. These results represented the first evidence for the downward trend in ages of mothers of twins. In each year between 2003 and 2006, percentages of parents who completed college or higher level of education were higher in the twin than in the singleton group, suggesting that the parental socioeconomic level became higher in twins than in singletons. We speculated that these demographic changes occurred because assisted reproductive technology was more easily available among parents of high socioeconomic status. In their sampling strategies, twin researchers should consider our findings of recent changes in demographic characteristics of parents of twins as well as increased DZ twin birth rates.


2006 ◽  
Vol 9 (6) ◽  
pp. 838-843 ◽  
Author(s):  
Yoon-Mi Hur ◽  
Joong Sik Shin ◽  
Hoe-Uk Jeong ◽  
Jung Yeol Han

AbstractThe South Korean Twin Registry (SKTR), previously called the Seoul Twin Family Study, is a nationwide volunteer registry of South Korean twins and their families. Since 2002, the SKTR has been updated in 4 important ways. First, continued sampling led to an increase in the number of twins. Second, the target area, Seoul, was enlarged to include other cities and rural areas in the country. Third, the target population was extended from school-aged twins to preschool and adult twins. Fourth, the research focus was expanded to include psychiatric and physical disease phenotypes. The present article describes a brief history of the SKTR, goals and current research highlights, recent major accomplishments, and future directions.


2019 ◽  
Vol 22 (6) ◽  
pp. 499-507 ◽  
Author(s):  
Dorthe Almind Pedersen ◽  
Lisbeth Aagaard Larsen ◽  
Marianne Nygaard ◽  
Jonas Mengel-From ◽  
Matt McGue ◽  
...  

AbstractThe Danish Twin Registry (DTR) was established in the 1950s, when twins born from 1870 to 1910 were ascertained, and has since been extended to include twins from birth cohorts until 2009. The DTR currently comprises of more than 175,000 twins from the 140 birth cohorts. This makes the DTR the oldest nationwide twin register and among the largest in the world. The combination of data from several surveys, including biological samples and repeated measurements on the same individuals, and data from Danish national registers provides a unique resource for a wide range of twin studies. This article provides an updated overview of the data in the DTR: First, we provide a summary of the establishment of the register, the different ascertainment methods and the twins included; then follows an overview of major surveys conducted in the DTR since 1994 and a description of the DTR biobank, including a description of the molecular data created so far; finally, a short description is given of the linkage to Danish national registers at Statistics Denmark and some recent examples of studies using the various data resources in the DTR are highlighted.


2019 ◽  
Vol 22 (6) ◽  
pp. 609-610
Author(s):  
Guillermo A. Cervantes-Cardona ◽  
Tania E. Cervantes-Nápoles ◽  
Gabino Cervantes-Guevara ◽  
Olga R. Manzo-Palomera ◽  
Alejandro González-Ojeda ◽  
...  

AbstractDespite the well-known relevance of twin studies in the medical and social sciences and the growing number of twin registries throughout the world, Latin America has not fully incorporated into the twin research community. We describe the first steps taken toward developing a twin registry in Mexico: its aim, organization, recruiting potential and main short-term objectives.


2019 ◽  
Vol 22 (6) ◽  
pp. 606-608 ◽  
Author(s):  
Yoon-Mi Hur ◽  
Man Chull Kang ◽  
Hoe-Uk Jeong ◽  
Il Cook Kang ◽  
Jong Woo Kim

AbstractThe South Korean Twin Registry (SKTR) is an ongoing nationwide volunteer registry of South Korean twins and their families. Since its inception, from preschooler to young adult, twins have been registered with the SKTR and have demonstrated that relative influences of genetic and environmental factors explaining individual differences in various psychological, mental health and physical traits in South Koreans are similar to those found in many Western twin studies. Currently, studies at the SKTR focus on identification of the process of gene-by-environment interactions as well as developmental differences in genetic and environmental influences on psychological and mental health traits in South Koreans. This report provides a brief overview, recruitment strategies, current samples, zygosity assessment, measures and future directions of the SKTR.


2012 ◽  
Vol 16 (1) ◽  
pp. 237-240 ◽  
Author(s):  
Yoon-Mi Hur ◽  
Hoe-Uk Jeong ◽  
Kee Wha Chung ◽  
Joong Sik Shin ◽  
Tae-Bok Song

The South Korean Twin Registry (SKTR) is an ongoing nation-wide volunteer registry of South Korean twins and their families, which was established in the year 2001 to understand genetic and environmental etiologies of psychological and physical traits among South Koreans. Recently, the SKTR sampling has been extended in two important ways. First, we began to recruit twins from lower socio-economic families to study interaction effects of gene by environmental context. Second, as a parallel study of the SKTR, the Nigerian Twin and Sibling Registry was developed to understand the origin of the population group differences/similarities in psychological traits between South Koreans and Nigerians. This article summarizes the main findings (based on the SKTR sample to date), recruitment procedures, zygosity assessment, measures, and future plans for the SKTR.


1997 ◽  
Vol 3 (1) ◽  
pp. 233-239 ◽  
Author(s):  
Patrick Holmes

The international dimension of science and engineering education is of paramount importance and merits serious consideration of the coherent skill set that is required to allow scientists and engineers more readily to transport themselves and their work to other locations in the world. 


Author(s):  
Lindsay G. Oades ◽  
Aaron Jarden ◽  
Hanchao Hou ◽  
Corina Ozturk ◽  
Paige Williams ◽  
...  

Wellbeing science is the scientific investigation of wellbeing, its’ antecedents and consequences. Alongside growth of wellbeing science is significant interest in wellbeing interventions at individual, organizational and population levels, including measurement of national accounts of wellbeing. In this concept paper, we propose the capability model of wellbeing literacy as a new model for wellbeing science and practice. Wellbeing literacy is defined as a capability to comprehend and compose wellbeing language, across contexts, with the intention of using such language to maintain or improve the wellbeing of oneself, others or the world. Wellbeing literacy is underpinned by a capability model (i.e., what someone is able to be and do), and is based on constructivist (i.e., language shapes reality) and contextualist (i.e., words have different meanings in different contexts) epistemologies. The proposed capability model of wellbeing literacy adds to wellbeing science by providing a tangible way to assess mechanisms learned from wellbeing interventions. Moreover, it provides a framework for practitioners to understand and plan wellbeing communications. Workplaces and families as examples are discussed as relevant contexts for application of wellbeing literacy, and future directions for wellbeing literacy research are outlined.


2021 ◽  
pp. 146879762199293
Author(s):  
Michelle Duffy ◽  
Judith Mair

In their editorial for the first issue of Tourist Studies, Adrian Franklin and Mike Crang made us aware that tourism research had shifted to an exploration of the extraordinary everyday where ‘more or less everyone now lives in a world rendered or reconfigured as interesting, entertaining and attractive – for tourists’. From our standpoint 20 years later, we suggest this particular departure point has important insights to offer our understanding of a quintessential tourism event, that of the festival, which now intervenes in daily life in all manner of ways. In this commentary, we present a reflective commentary on recent scholarship that advocates for more rigour in festival studies, with greater theory development and testing within the festival context, and how this work is suggestive of future directions for festival research. We present several areas that are ripe for further research, particularly given the tumultuous nature of the world we are living in, such as the challenges of climate change and how we might socialise in a post-Covid world. Much has changed in the 20 years since the inception of Tourist Studies, but festivals remain resilient – they will re-emerge in future, perhaps not unscathed but with a renewed sense of purpose.


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