scholarly journals Psychosocial Twin Cohort Studies in Japan: The Keio Twin Research Center (KoTReC)

2019 ◽  
Vol 22 (6) ◽  
pp. 591-596
Author(s):  
Juko Ando ◽  
Keiko K. Fujisawa ◽  
Kai Hiraishi ◽  
Chizuru Shikishima ◽  
Tetsuya Kawamoto ◽  
...  
Keyword(s):  
High School ◽  
Twin Study ◽  
Panel Study ◽  
Self Control ◽  
Research Center ◽  
Cross Sectional ◽  
Twin Research ◽  
Infancy And Childhood ◽  
Research Designs ◽  
School Survey

AbstractThe Keio Twin Research Center (KoTReC) was established in 2009 at Keio University to combine two longitudinal cohort projects — the Keio Twin Study (KTS) for adolescence and adulthood and the Tokyo Twin Cohort Project (ToTCoP) for infancy and childhood. KoTReC also conducted a two-time panel study of self-control and psychopathology in twin adolescence in 2012 and 2013 and three independent anonymous cross-sectional twin surveys (ToTcross) before 2012 — the ToTCross, the Junior and Senior High School Survey and the High School Survey. This article introduces the recent research designs of KoTReC and its publications.

Two Cohort and Three Independent Anonymous Twin Projects at the Keio Twin Research Center (KoTReC)

2013 ◽  
Vol 16 (1) ◽  
pp. 202-216 ◽  
Author(s):  
Juko Ando ◽  
Keiko K. Fujisawa ◽  
Chizuru Shikishima ◽  
Kai Hiraishi ◽  
Mari Nozaki ◽  
...  
Keyword(s):  
Cognitive Abilities ◽  
Twin Study ◽  
Large Scale ◽  
Twin Studies ◽  
Research Center ◽  
Data Sets ◽  
Environment Interaction ◽  
Cross Sectional ◽  
Twin Research ◽  
Genes And Environment

The Keio Twin Research Center has conducted two longitudinal twin cohort projects and has collected three independent and anonymous twin data sets for studies of phenotypes related to psychological, socio-economic, and mental health factors. The Keio Twin Study has examined adolescent and adult cohorts, with a total of over 2,400 pairs of twins and their parents. DNA samples are available for approximately 600 of these twin pairs. The Tokyo Twin Cohort Project has followed a total of 1,600 twin pairs from infancy to early childhood. The large-scale cross-sectional twin study (CROSS) has collected data from over 4,000 twin pairs, from 3 to 26 years of age, and from two high school twin cohorts containing a total of 1,000 pairs of twins. These data sets of anonymous twin studies have mainly targeted academic performance, attitude, and social environment. The present article introduces the research designs and major findings of our center, such as genetic structures of cognitive abilities, personality traits, and academic performances, developmental effects of genes and environment on attitude, socio-cognitive ability and parenting, genes x environment interaction on attitude and conduct problem, and statistical methodological challenges and so on. We discuss the challenges in conducting twin research in Japan.

Development of a self-efficacy model in junior and senior high school students based on religiosity and family determinants: a cross sectional approach

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Tri Anjaswarni ◽  
Nursalam Nursalam ◽  
Sri Widati ◽  
Ah. Yusuf ◽  
Rr Dian Tristiana
Keyword(s):  
High School ◽  
High School Students ◽  
Self Efficacy ◽  
Senior High School ◽  
Self Control ◽  
Validity And Reliability ◽  
School Students ◽  
Cross Sectional ◽  
Significance Level ◽  
Senior High School Students

Abstract Objectives Self-efficacy is the belief a person has regarding his success in completing a task. A high level of self-efficacy can affect one’s thoughts and motivation to complete tasks well. Conversely, someone with low self-efficacy has a tendency to avoid difficult tasks. Self-efficacy can play a role in success in the future. This study aimed to develop a self-efficacy model for junior and senior high school students based on religious and family determinants. Method This study used a cross-sectional design and simple sampling technique. The calculation result involved 158 samples. The independent variables were religious and family determinants. The dependent variable was self-efficacy. The data were collected using a questionnaire that was tested for validity and reliability. The analysis used a multiple linear regression test with a significance level of α ≤ 0.05. Results The results showed self-efficacy was effectively determined by religion, communication, bonding and parenting factors. Overall, religion had the greatest role in influencing self-efficacy. Bonding and communication had an indirect effect on self-efficacy through parenting factors mediators. Conclusion Parenting factors influence self-efficacy indirectly through bonding and communication; however, parenting factors cannot be ignored. Religion was the biggest determinant of self-efficacy and capital of good self-control and strong conviction in completing tasks and achieving goals.

scholarly journals Is there a crack epidemic among students in Brazil?: comments on media and public health issues

2012 ◽  
Vol 28 (9) ◽  
pp. 1643-1649 ◽  
Author(s):  
Solange Aparecida Nappo ◽  
Zila M. Sanchez ◽  
Luciana Abeid Ribeiro
Keyword(s):  
High School ◽  
High School Students ◽  
Health Issues ◽  
Cross Sectional Survey ◽  
School Students ◽  
Cross Sectional ◽  
Crack Use ◽  
The Media ◽  
School Survey ◽  
Official Data

In the past year, the Brazilian Federal Government and society have reported and acted on a crack use epidemic, which has been exacerbated by the media. This study hypothesized that crack use has not increased at the rate suggested by the Brazilian media. A cross-sectional survey was carried out in 2010 usinga multistage probabilistic representative sample of Brazilian middle and high school students in the country's 27 state capitals. A total of 50,890 valid questionnaires were weighted, analyzed and results compared to the 2004 national school survey dataset. Considering lifetime and past year crack use, no change in consumption was found between 2004 and 2010. Official data in Brazil on middle and high school students does not support the assertion of a crack epidemic widely publicized by the media. Government measures to treat and prevent crack use are encouraged; however, the term epidemic has been inappropriately used to represent the static prevalence of crack consumption among students.

scholarly journals Problematic Internet Use in Semarang Middle School Students

2019 ◽  
Author(s):  
Mungin Eddy Wibowo ◽  
Mulawarman Mulawarman ◽  
Edy Purwanto
Keyword(s):  
High School ◽  
High School Students ◽  
Internet Use ◽  
Quantitative Methods ◽  
Sampling Technique ◽  
Self Control ◽  
Problematic Internet Use ◽  
Cluster Sampling ◽  
School Students ◽  
Cross Sectional

Problematic internet use (PIU) or problematic internet use is a maladaptive pleasure in using the internet excessively without self-control. This study aims to investigate the prevalence and risk factors for the level of problematic internet use held by high school students. To achieve this goal quantitative methods with cross-sectional design were used in this study. A total of 336 students from junior and senior high school were selected using cluster sampling technique. The research data was taken using the Generalized Problematic Internet Use Scale 2 (GPIUS2) instrument. The results showed that the average PIU level owned by students was in the medium category. Education and age levels also have a close correlation with the high level of PIU that students have. In addition there are internal and external factors that can cause students to be exposed to PIU. Thus, it is necessary to provide both preventive and curative counseling services that can help students formulate more potential activities in supporting students’ academic and social development.

scholarly journals Problematic Internet use, well-being, self-esteem and self-control: Data from a high-school survey in China

2016 ◽  
Vol 61 ◽  
pp. 74-79 ◽  
Author(s):  
Songli Mei ◽  
Yvonne H.C. Yau ◽  
Jingxin Chai ◽  
Jinhua Guo ◽  
Marc N. Potenza
Keyword(s):  
High School ◽  
Internet Use ◽  
Well Being ◽  
Self Esteem ◽  
Self Control ◽  
Problematic Internet Use ◽  
Control Data ◽  
School Survey
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