Biomaterial Database

Genetic and environmental variation in Eysenck Personality Questionnaire scales measured on Australian adolescent twins. 1994

G T Macaskill, and J L Hopper, and V White, and D J Hill

University of Melbourne, Department of Public Health and Community Medicine, Carlton, Victoria, Australia.

The Eysenck Personality Questionnaire was administered to 1400 Australian twin pairs aged 11 to 18, and the data were analyzed by a multivariate normal model using the software FISHER. For each scale, attempts were made to transform to normality, about a mean modeled separately for each sex as a quadratic function of age. Variances and covariances were estimated for each sex-zygosity group as a monotone function of age. Evidence for genetic sources of variation were assessed in part by fitting models which allowed for age-dependent, sex-specific, and correlated additive genetic factors, and age-dependent and sex-specific environmental factors, under the assumption that effects of environmental factors common to twin pairs are independent of zygosity. Evidence for genetic factors independent of age and sex was most compelling for Psychoticism and Neuroticism. For Extraversion, if genetic factors exist they would be mostly sex-specific and age-dependent. For the Lie scale there was evidence for, at most, a small component of genetic variation.

UI	MeSH Term	Description	Entries
D007206	Individuality	Those psychological characteristics which differentiate individuals from one another.	Individual Differences,Difference, Individual,Differences, Individual,Individual Difference
D008297	Male		Males
D008957	Models, Genetic	Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.	Genetic Models,Genetic Model,Model, Genetic
D010551	Personality	Behavior-response patterns that characterize the individual.	Personalities
D010553	Personality Development	Growth of habitual patterns of behavior in childhood and adolescence.	Development, Personality
D010555	Personality Inventory	Check list, usually to be filled out by a person about himself, consisting of many statements about personal characteristics which the subject checks.	Edwards Personal Preference Schedule,Myers-Briggs Type Indicator,Indicator, Myers-Briggs Type,Inventories, Personality,Inventory, Personality,Myers Briggs Type Indicator,Personality Inventories
D011594	Psychometrics	Assessment of psychological variables by the application of mathematical procedures.	Psychometric
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D005120	Extraversion, Psychological	A state in which attention is largely directed outward from the self.	Extraversion (Psychology),Extraversion, Psychology,Extroversion, Psychological,Extroversion, Psychology,Extraversion,Extroversion,Extroversion (Psychology),Psychological Extraversion,Psychological Extroversion,Psychology Extraversion,Psychology Extraversions,Psychology Extroversion
D005260	Female		Females