Abstract
Inhibitory control (IC) is a dimension of child temperament that involves the self-regulation of behavioral responses under some form of instruction or expectation. Although IC is posited to appear in toddlerhood, the voluntary control of emotions such as anger begins earlier. Little research has analyzed relations between emotional development in infancy and later emerging IC. We examined phenotypic associations and genetic and environmental influences on parent- and laboratory-assessed anger and IC in a twin sample from 12 to 36 months of age. Typically, twins with low levels of IC had high levels of anger. Behavioral genetic findings confirmed significant genetic influences on anger and IC as assessed by parents, and on lab-based anger assessments. Shared environmental factors contributed to twin similarity on lab-assessed anger and IC at 36 months. Phenotypic covariance between anger and IC was largely due to overlapping genetic factors for parent ratings, and environmental factors in the laboratory.
Sign-in/Register to access full text options 
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.
