this study doesn't say anything about the tests that were given. If it was a grade-level test, both of the groups would likely do well on it. But how do the kids placed in gifted programs do on ABOVE level testing? If you gave my DS a first grade level assessment he would probably make a couple of stupid calculation errors and score about the same as other "bright" children in the class who have had no advanced material given to them. But where the obvious difference would be is in ABOVE level testing, like if you gave the first graders a 3rd grade level test. DS would probably pass it or do fairly well, and the other children who looked similar to him on the first grade level assessment would probably flunk.
