I am sure that all of us are aware of the Flynn effect seeing as we all learned about it in chapter 9. The Flynn effect is finding that average IQ scores have been rising at a rate of approximately three points per decade and that on average our IQ's are 10-15 points higher than those of our grandparents. This is pretty amazing huh? Psychologists have proposed some explanations...1) Increased test sophistication (better at taking tests) 2) Increased complexity of the modern world (technology) 3) Better nutrition (not suffering from malnutrition) 4) Changes at home and school (parents having less children hence devoting more time to the ones they have). These explanations seem pretty reasonable accept there is one problem, recent data suggests that the Flynn effect may be reversing or decreasing.
Why would the Flynn effect be decreasing? Well, I agree with three of the four explanations. Explanations 1,2,4 seem reasonable but I'm not sure I agree with explanation 3. Better nutrition you say? Last time I checked Americans were not healthy eaters at all. Americans today consume way to much sugar in their diet, not enough water, and not enough exercise (the majority). I can see how poor nutrition can cause a reverse Flynn effect. Poor nutrition with little exercise is not what the brain needs to perform at a maximum level. For the brain to grow in different areas it needs nutrients to feed off of. What we put into our body is what we get out of out body. Children sitting all day video gaming rather than playing with other children could also be the culprit. What other factors could contribute to the Flynn effect decreasing? Thoughts?