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1 – 10 of over 11000Heritability studies attempt to estimate the contribution of genes (vs. environments) to variation in phenotypes (or outcomes of interest) in a given population at a given time…
Abstract
Purpose
Heritability studies attempt to estimate the contribution of genes (vs. environments) to variation in phenotypes (or outcomes of interest) in a given population at a given time. This chapter scrutinizes heritability studies of adverse health phenotypes, emphasizing flaws that have become more glaring in light of recent advances in the life sciences and manifest most visibly in epigenetics.
Methodology/approach
Drawing on a diverse body of research and critical scholarship, this chapter examines the veracity of methodological and conceptual assumptions of heritability studies.
Findings
The chapter argues that heritability studies are futile for two reasons: (1) heritability studies suffer from serious methodological flaws with the overall effect of making estimates inaccurate and likely biased toward inflated heritability, and, more importantly (2) the conceptual (biological) model on which heritability studies depend – that of identifiably separate effects of genes versus the environment on phenotype variance – is unsound. As discussed, contemporary bioscientific work indicates that genes and environments are enmeshed in a complex (bidirectional, interactional), dynamic relationship that defies any attempt to demarcate separate contributions to phenotype variance. Thus, heritability studies attempt the biologically impossible. The emerging research on the importance of microbiota is also discussed, including how the commensal relationship between microbial and human cells further stymies heritability studies.
Originality/value
Understandably, few sociologists have the time or interest to be informed about the methodological and theoretical underpinnings of heritability studies or to keep pace with the incredible advances in genetics and epigenetics over the last several years. The present chapter aims to provide interested scholars with information about heritability and heritability estimates of adverse health outcomes in light of recent advances in the biosciences.
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Gill Mein, Taha Bhatti, Sarah Bailey, Claire J. Steves, Deborah Hart, Paz Garcia and Anthea Tinker
A decline in participation in research studies as people age is inevitable as health declines. This paper aims to address this by collecting data from a group of participants to…
Abstract
Purpose
A decline in participation in research studies as people age is inevitable as health declines. This paper aims to address this by collecting data from a group of participants to examine their reasons for declining attendance and suggestions for maintaining attendance as participants age.
Design/methodology/approach
This research used a postal self-completed questionnaire including open and closed questions. The questionnaire was sent to those participants who have declined to attend further clinic visits. Results were analysed using thematic content analysis.
Findings
The study had a 51% response rate. Participants reported difficulty with travelling to the clinic, and health as the main issues in addition to family demands and a lack of understanding regarding the continuing participation of a singleton twin.
Research limitations/implications
This study could only include data from responding participants, answers to open question also included comments from participants regarding their twin.
Practical implications
An anonymous questionnaire was sent to all individuals in the Keeping Together project. It was therefore not possible to identify if responses were from both members of a twin pair.
Originality/value
Maintaining participation in longitudinal studies is of crucial importance to enhance the value of data. Retention of participants in studies may change as people age and health becomes impaired. Suggestions for maintaining and improving the retention of older participants have been identified and are generalisable to other longitudinal studies of ageing.
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Fredrik W. Andersson, Susanne Gullberg Brännstrom and Roger Mörtvik
It is increasingly important to study labour market outcomes for people who are not in employment, education, or training (NEET). Where most studies focus solely on young people…
Abstract
Purpose
It is increasingly important to study labour market outcomes for people who are not in employment, education, or training (NEET). Where most studies focus solely on young people, the purpose of this paper is to include both younger and older NEETs to find out if there is any long-term scarring effect, and if the effect is different between these two groups.
Design/methodology/approach
This study uses a twin-based estimation method for the first time to measure the long-term effect of economic inactivity on income. The analysis is based on biological twins, in order to control for individuals’ unobservable heterogeneity. It is assumed that twins are similar to each other and the only unobservable heterogeneity is at the family level. Register-based data from Statistics Sweden is used.
Findings
The result indicates a significant negative income effect for those who have been in NEET, and is larger for those who have been in NEET for several consecutive periods of time. Individuals who were in NEET during 2001-2003 had on average 62 per cent lower income compared with their twin in 2011. The corresponding number for individuals who were in NEET for just one period was 33 per cent. Hence, time in NEET reduces income. The results show that the long-term scarring effect is not affected by age.
Originality/value
This study utilises for the first time a twin-based estimation method to measure the long-term effect of inactivity. Most studies focus solely on young people, but the authors also include an older group of people.
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Juhani Ukko, Minna Saunila, Mina Nasiri, Tero Rantala and Mira Holopainen
This study examines the connection between different digital-twin characteristics and organizational control. Specifically, the study aims to examine whether the digital-twin…
Abstract
Purpose
This study examines the connection between different digital-twin characteristics and organizational control. Specifically, the study aims to examine whether the digital-twin characteristics exploration, guidance and gamification will affect formal and social control.
Design/methodology/approach
The study is based on an analysis of survey results from 139 respondents comprising applied university students who use digital twins.
Findings
The results offer an interesting contribution to the literature. The authors consider the digital-twin characteristics exploration, guidance and gamification and investigate their contribution to two types of organizational controls: formal and social. The results show that two characteristics, exploration and gamification, affect the extent to which digital twins can be utilized for social control. Exploration and guidance’s role is significant concerning the extent to which digital twins can be utilized for formal control.
Originality/value
This study contributes to literature by considering multiple digital-twin characteristics and their contribution to two different control outcomes. First, it diverges from previous technical-oriented research by investigating digital twins in a human context. Second, the study is the first to examine digital twins’ effects from an organizational control perspective systematically.
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Chih-Chen Lee, Tingting (Rachel) Chung and Robert B. Welker
Deception detection is instrumental in business management but professionals differ widely in terms of deception detection performance. The purpose of this paper is to examine the…
Abstract
Purpose
Deception detection is instrumental in business management but professionals differ widely in terms of deception detection performance. The purpose of this paper is to examine the genetic basis of deception detection performance using the classic twin study design and address the research question: how much variance in individual differences in deception detection performance can be accounted for by the variance in genetics vs environmental influences?
Design/methodology/approach
In total, 192 twins, with 65 pairs of monozygotic (identical) twins and 31 pairs of dizygotic (fraternal) twins participated in an experiment. A series of behavioral genetic analyses were performed.
Findings
The variability in deception detection performance was largely determined by differences in shared and non-shared environments.
Research limitations/implications
The subjects were solicited during the Twins Days Festival so the sample selection and data collection were limited to the natural settings in the field. In addition, the risks and rewards associated with deception detection performance in the study are pale in comparison with those in practice.
Practical implications
Deception detection performance may be improved through training programs. Corporations should continue funding training programs for deception detection.
Originality/value
This is the first empirical study that examines the complementary influences of genetics and environment on people’s ability to detect deception.
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Victoria Blom, Lennart Bodin, Gunnar Bergström and Pia Svedberg
The purpose of this paper is to study the demand-control-support (DCS) model on burnout in male and female managers and non-managers, taking into account genetic and shared family…
Abstract
Purpose
The purpose of this paper is to study the demand-control-support (DCS) model on burnout in male and female managers and non-managers, taking into account genetic and shared family environmental factors, contributing to the understanding of mechanisms of how and when work stress is related to burnout.
Design/methodology/approach
A total of 5,510 individuals in complete same-sex twin pairs from the Swedish Twin Registry were included in the analyses. Co-twin control analyses were performed using linear mixed modeling, comparing between-pairs and within-pair effects, stratified by zygosity and sex.
Findings
Managers scored higher on demands and control in their work than non-managers, and female managers seem to be particularly at risk for burnout facing more demands which are not reduced by a higher control as in their male counterparts. Co-twin analyses showed that associations between control and burnout as well as between demands and burnout seem to be affected by shared family environmental factors in male non-managers but not in male managers in which instead the associations between social support and burnout seem to be influenced by shared family environment.
Practical implications
Taken together, the study offers knowledge that shared environment as well as sex and managerial status are important factors to consider in how DCS is associated to exhaustion.
Originality/value
Using twin data with possibilities to control for genetics, shared environment, sex and age, this study offers unique insight into the DCS research, which focusses primarily on the workplace environment rather than individual factors.
The purpose of this study is to shed light on the twin transition in China in the organization of innovation processes in artificial intelligence (AI) and green technology (GT…
Abstract
Purpose
The purpose of this study is to shed light on the twin transition in China in the organization of innovation processes in artificial intelligence (AI) and green technology (GT) development and to understand the role of foreign multinationals in Chinese innovation systems.
Design/methodology/approach
A qualitative research approach is used by interviewing executives from German multinationals with expertise in AI and GT development and organization of innovation processes in China. In total, 11 semi-structured interviews were conducted with companies, and the data were analysed with a thematic qualitative text analysis.
Findings
The findings show that AI applications for GT are primarily developed in cross-company projects that are led by local and regional authorities through the organization of industrial districts and clusters. German multinationals are either being integrated, remaining autonomous or being excluded from these twin transition innovation processes.
Originality/value
This paper aims to fill the gap in the literature by providing one of the first qualitative approach towards twin transition innovation processes in China and exploring the integration of multinational enterprises in cluster organizations. To the best of the author’s knowledge, this is one of the first twin transition studies from this perspective in emerging economies.
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The 2005 APSR article by John Alford, Carolyn Funk, and John Hibbing presented data from the Virginia 30,000 Health & Lifestyle Questionnaire (VA30K), AARP twin studies, and an…
Abstract
The 2005 APSR article by John Alford, Carolyn Funk, and John Hibbing presented data from the Virginia 30,000 Health & Lifestyle Questionnaire (VA30K), AARP twin studies, and an Australian twin study (ATR) to test their hypothesis that political attitudes are influenced by genetic as well as environmental factors. Political attitudes, they suggested, were expected to be highly heritable and particularly so on issues most correlated with personality. They employed survey responses from the Wilson–Patterson Attitude Inventory to measure political attitudes. To gauge heritability, they utilize the 2:1 genetic ratio between monozygotic (MZ) and dizygotic (DZ) twins. The authors argued that while previous studies in political attitudes had concentrated on measuring the influence of environmental variables, their test added explanatory power by considering heritability (Alford, Funk, & Hibbing, 2005).
Danielle Boisvert and Jamie Vaske
While the field of criminology is rooted in sociological tradition, biosocial criminology has emerged as a promising perspective in studying antisocial behaviors. This perspective…
Abstract
While the field of criminology is rooted in sociological tradition, biosocial criminology has emerged as a promising perspective in studying antisocial behaviors. This perspective encompasses the research from other scientific disciplines, namely behavioral genetics and molecular genetics. At its core, biosocial criminology views criminal behavior as a function of both the social environment as well as biological/genetic factors. This chapter will provide a description of the prominent methodologies used in behavioral genetics and molecular genetics, a review of the empirical research, an overview of some of the statistical and methodological issues, as well as a discussion on the potential avenues for future research.