The effect was slight, and well within the normal range for healthy children, the researchers found. And as expected, parents’ guidance and their genes had by far the strongest influence on how children behaved.
I find it infuriating that the rest of the article goes on in a very biased manner to say that children who go to daycare are simply poorly behaved. The level of that misbehavior is barely described and the actual affect on the classroom is not even mentioned.
Daycare is a fact of life. And as far as I am concerned, some amount of preschool should be mandatory. My reaction to this is that teachers need to develop modern strategies to deal with the behaviors instead of relying on 60 year-old concepts where kids were largely coming from no previous experience with a school setting.