No one knows how long this effect lasts or even if it is a valid reflection of a true association with Sponge Bob (or fast animation). To begin with the sample size for each group was small (20 per group), the children were 4 years old despite the target demographic for Sponge Bob being 6 to 11, and there may be other explanations that have nothing to do with fast animation. For anyone who watches Sponge Bob, it is very food-based. Maybe the children who watched Sponge Bob got hungry watching those delicious Krabby Patties being prepared and just wanted to eat something afterwards.
The ironic thing about this study from my own personal experience is that I know people whose children love Sponge Bob and are great students but whose parents banned Caillou because the character was talking rude to others and this was being imitated by the children. So, there are other factors to consider as opposed to how fast the segments go on a TV show. As someone who grew up watching fast paced shows such as Tom & Jerry, Woody Woodpecker, and the Electric Company, somehow I made it out ok and with enough executive functioning to earn a doctoral degree and run a website. So I think that the Sponge Bob Generation will be just fine -- as long as Plankton doesn't get his grubby little hands on that secret Krabby Patty recipe.