Abstract
A study of 61 pairs of identical (MZ) and fraternal (DZ) grade-school twin girls found moderate genetic contributions to individual differences in several aspects of activity motivation: reaction time, variety of activity, anxiety, and impatience. Activity motivation was defined by empirical clusters of related measures including ratings, experimental tasks, and interviews. Intraclass correlation coeficients for the MZ and DZ groups were compared, and heritability estimates were computed for every measure. Possible biases in twin research were examined with special emphasis on the environmental similarity of MZ and DZ co-twins.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
