Toddlers` aggression linked to genetic factors
Washington: A new study has found that the development of physical aggression in toddlers is strongly associated genetic factors and to a lesser degree with the environment.
Eric Lacourse of the University of Montreal worked with the parents of identical and non-identical twins to evaluate and compare their behavior, environment and genetics.
"The gene-environment analyses revealed that early genetic factors were pervasive in accounting for developmental trends, explaining most of the stability and change in physical aggression," Lacourse said.
"However, it should be emphasized that these genetic associations do not imply that the early trajectories of physical aggression are set and unchangeable. Genetic factors can always interact with other factors from the environment in the causal chain explaining any behavior," the researcher said.
Lacourse and his colleagues posited and tested three general patterns regarding the developmental roles of genetic and environmental factors in physical aggression.
First, the most consensual and general point of view is that both sources of influence are ubiquitous and involved in the stability of physical aggression. Second, a "genetic set point" model suggested a single set of genetic factors could account for the level of physical aggression across time.
A third pattern labeled 'genetic maturation' postulates new sources of genetic and environmental influences with age.
The researcher said that according to the genetic maturation hypothesis, new environmental contributions to physical aggression could be of short duration in contrast to genetic factors.
The study is published in journal Psychological Medicine.
Download the all new Zee News app for Android and iOS to stay up to date with latest headlines and news stories in Politics, Entertainment, Sports, Technology, Business and much more from India and around the world.
More from India
More from World
More from Sports
More from Entertaiment
- Entire Indian force can't defend Kashmir from terrorists: Farooq Abdullah
- Woman cop transferred within 24 hours of spat with Haryana minister Anil Vij
- It's a reality, Muslim youths from South India more attracted to ISIS: Kiren Rijiju
- Sheena Bora murder: Why did Indrani send servant to Kolkata to get illegal drugs?
- PM Narendra Modi meets journalists at Diwali Milan