In particular, the ability to control for earlier behavior problems, allowed a clearer understanding of the impact of conflict experienced during early school years but may provide a conservative estimate. (academic.oup.com)
For example, conflict before age 6 may have lead to early behavior problems. (academic.oup.com)
Susan selected hundreds of orphaned puppies and kittens over a period of five years and placed them into new homes with early behavior training and health care information. (animalbehavior.net)