Multivariate behavioral genetic analysis of twin data on scholastic abilities

1979 ◽  
Vol 9 (6) ◽  
pp. 505-517 ◽  
Author(s):  
Robert Plomin ◽  
J. C. DeFries
2005 ◽  
Vol 73 (2) ◽  
pp. 523-552 ◽  
Author(s):  
Wendy Johnson ◽  
Matt McGue ◽  
Robert F. Krueger

2007 ◽  
Vol 10 (2) ◽  
pp. 267-273 ◽  
Author(s):  
Dorret I. Boomsma ◽  
John T. Cacioppo ◽  
Bengt Muthén ◽  
Tihomir Asparouhov ◽  
Shaunna Clark

AbstractIn previous studies we obtained evidence that variation in loneliness has a genetic component. Based on adult twin data, the heritability estimate for loneliness, which was assessed as an ordinal trait, was 48%. These analyses were done on loneliness scores averaged over items (‘I feel lonely’ and ‘Nobody loves me’) and over time points. In this article we present a longitudinal analysis of loneliness data assessed in 5 surveys (1991 through 2002) in Dutch twins (N = 8389) for the two separate items of the loneliness scale. From the longitudinal growth modeling it was found sufficient to have non-zero variance for the intercept only, while the other effects (linear, quadratic and cubic slope) had zero variance. For the item ‘I feel lonely’ we observed an increasing age trend up to age 30, followed by a decline to age 50. Heritability for individual differences in the intercept was estimated at 77%. For the item ‘Nobody loves me’ no significant trend over age was seen; the heritability of the intercept was estimated at 70%.


2008 ◽  
Vol 22 (5) ◽  
pp. 899-914 ◽  
Author(s):  
Steven Taylor ◽  
Kerry L. Jang ◽  
Sherry H. Stewart ◽  
Murray B. Stein

2013 ◽  
Vol 16 (3) ◽  
pp. 690-697 ◽  
Author(s):  
Molly Cairncross ◽  
Livia Veselka ◽  
Julie Aitken Schermer ◽  
Philip A. Vernon

The present study is the first to assess phenotypic correlations between alexithymia and the Dark Triad traits of personality in a community sample, as well as the common genetic and environmental factors underlying these correlations. Participants were 232 North American adult twin pairs who completed the Narcissistic Personality Inventory, the Self-Report Psychopathy Scale, the MACH-IV, and the Toronto Alexithymia Scale. Results revealed that alexithymia correlates significantly and positively with psychopathy and Machiavellianism, and negatively with narcissism. Subsequent bivariate behavioral genetic analysis demonstrated that these phenotypic correlations were primarily attributable to common genetic and common non-shared environmental factors. The implication of these findings regarding the maladaptive functions of alexithymia within the antisocial realm of behavior and the need for replication are discussed.


Parenting ◽  
2016 ◽  
Vol 16 (4) ◽  
pp. 257-283 ◽  
Author(s):  
Amanda K. Cheung ◽  
K. Paige Harden ◽  
Elliot M. Tucker-Drob

2014 ◽  
Vol 69 ◽  
pp. 156-161 ◽  
Author(s):  
Yu L.L. Luo ◽  
Yuanyuan Shi ◽  
Huajian Cai ◽  
Mingzheng Wu ◽  
Hairong Song

2008 ◽  
Vol 18 (3) ◽  
pp. 289-295 ◽  
Author(s):  
Stefan Samuelsson ◽  
Brian Byrne ◽  
Richard K. Olson ◽  
Jacqueline Hulslander ◽  
Sally Wadsworth ◽  
...  

2010 ◽  
Vol 24 (3) ◽  
pp. 177-186 ◽  
Author(s):  
Steven Taylor ◽  
Tracie O. Afifi ◽  
Murray B. Stein ◽  
Gordon J. G. Asmundson ◽  
Kerry L. Jang

Contemporary cognitive models of obsessive-compulsive disorder, derived from Beck’s cognitive approach to emotional disorders, emphasize the importance of particular dysfunctional beliefs in giving rise to obsessive-compulsive (OC) symptoms. These beliefs represent three factor-analytically distinct domains: (a) The overimportance of one’s thoughts and the need to control these thoughts; (b) perfectionism and the intolerance of uncertainty; and (c) inflated personal responsibility and the overestimation of threat. The models suggest that these beliefs arise from environmental factors, such as exposure to particular forms of learning. To test this assumption, we conducted a behavioral-genetic analysis of scores on these dysfunctional beliefs from a community sample of 167 monozygotic and 140 dizygotic twin pairs. Results indicated that the beliefs are significantly heritable, with genetic factors accounting for 32% to 40% of the variance in scores. Over two-thirds of the variance in scores for the three types of beliefs was attributable to a set of genetic and environmental factors that influenced all of these beliefs. Results suggest that contemporary cognitive models require revision, because they erroneously attribute the development of OC-related dysfunctional beliefs entirely to environmental factors.


2008 ◽  
Vol 39 (2) ◽  
pp. 133-144 ◽  
Author(s):  
William S. Kremen ◽  
Kristen C. Jacobson ◽  
Matthew S. Panizzon ◽  
Hong Xian ◽  
Lindon J. Eaves ◽  
...  

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