You mean because the simple quiz is too focused on social stuff? Possibly. Once you collect enough results on the second one, do a paired t-test with the two sets of scores and you'll know if there's a statistically significant difference between them. You'll have to normalize the two sets of scores, because they have different ranges, means and standard deviations. You do that by converting each score to a "standard deviation unit". If they're not different and/or we score higher on the longer quiz too, find 30 random people on the street and give them the quiz, then do a t-test to see if that difference is real. On a small sample, like 30 people, a 6 point difference could be a fluke, ie not a real difference, especially given that huge range from 6 to 42. This is science!