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Li-Gao, Ruifang; Boomsma, Dorret I.; Dolan, Conor V.; De Geus, Eco J. C.; Denollet, Johan; Kupper, Nina – Developmental Psychology, 2022
Feeling inhibited and socially not at ease is reflected in the trait social inhibition (SI). SI is associated with psychopathology that arises in young adulthood, such as anxiety. We aim for a better insight into the genetic and environmental contributions to SI across the life span, and as such examine their contributions to SI stability and…
Descriptors: Inhibition, Genetics, Environmental Influences, Twins
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Friso-van den Bos, Ilona; Kolkman, Meijke E.; Kroesbergen, Evelyn H.; Leseman, Paul P. M. – Journal of Cognition and Development, 2014
The present study aims to examine relations between number representations and various sources of individual differences within early stages of development of number representations. The mental number line has been found to develop from a logarithmic to a more linear representation. Sources under investigation are counting skills and executive…
Descriptors: Numeracy, Individual Differences, Number Concepts, Executive Function
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Ivanova, Katya; Mills, Melinda; Veenstra, Rene – Journal of Research on Adolescence, 2011
This study examined the effect of parental divorce on the time it took adolescents to initiate their first romantic relationships. Individual differences in temperament and pubertal development and the age of the adolescent at the time of divorce were also taken into account. Hypotheses were tested using event history analysis with a sample of…
Descriptors: Divorce, Early Adolescents, Adolescents, Puberty
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Hoekstra, Rosa A.; Bartels, Meike; Boomsma, Dorret I. – Learning and Individual Differences, 2007
In a longitudinal genetic study we explored which factors underlie stability in verbal and nonverbal abilities, and the extent to which the association between these abilities becomes stronger as children grow older. Measures of verbal and nonverbal IQ were collected in Dutch twin pairs at age 5, 7, 10, 12 and 18 years. The stability of both…
Descriptors: Twins, Intervals, Structural Equation Models, Intelligence Quotient
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Remland, Martin S.; And Others – Journal of Social Psychology, 1995
Reports on a study of the effects of culture, gender, and age on interpersonal distance, body orientation, and touch among 381 same-sex and mixed-sex dyads in 7 nations. Finds that more touch was observed among Italian and Greek dyads than among English, French, and Dutch dyads. (CFR)
Descriptors: Adults, Age Differences, Cross Cultural Studies, Cultural Differences
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Tamrouti-Makkink, Ilse D.; Dubas, Judith Semon; Gerris, Jan R. M.; van Aken, Marcel A. G. – Journal of Child Psychology and Psychiatry, 2004
Background: The present study extends existing studies on the role of differential parental treatment in explaining individual differences in adolescent problem behaviors above the absolute level of parenting and clarifies the function of gender of the child, birth rank and gender constellation of the sibling dyads. Method: The absolute level of…
Descriptors: Siblings, Parenting Styles, Child Rearing, Adolescents