It depends. I'm not surprised at the results of that survey, because there are too many variables involved to make it actually meaningful. I would agree that all children are not affected by all sugar. However, here are the scenarios where sugar has negatively affected members of my family (either my kids or my parents/brother):
- high amounts of sugar on an empty stomach is much more potent than if eaten after a full meal (my mother swears she actually feels "high" and almost giddy)
- when there are also additives involved, especially colors, that seems to make things worse
- co-ordination and concentration, and even strength, can be affected - my brother notices this particularly when he has to play a squash match and he's eaten any kind of sugar within a couple of hours beforehand. I remember having a test done once where had to press my thumb and forefinger together as hard as I could, and someone tried to pry them apart; then I ate something sugary, and maybe 10 - 15 minutes later the test was repeated - it was amazing how much weaker I was after the sugar!
- sugar paired with a significant amount of fat, or complex sugar, isn't nearly as bad as sugars on their own or simple, refined sugars. Fat slows down the processing of the sugar, making it enter the bloodstream at a slower, more steady pace. Complex sugars and sugar contained in complex carbs also enters the bloodstream more slowly.
- some family members are more sensitive to the effects of sugar than others.
With all of the above variables, it's no wonder the study had the results it did! I know how various sugars under various circumstances affect my individual family members, and I don't care what the studies say! In this case I trust my experience more - at least, for MY own family.