To respond to the original post, I think it makes a difference in certain situations and not others. I would rather go to a doctor or lawyer that has good abstract reasoning ability than one who is speedy. I would rather go through the checkout line at Target with the person who has fast processing speed than good abstract reasoning ability, unless I'm arguing about whether something is really on clearance or not or whether my manufacturer's coupon is valid. Ideally, a person has both, but in some situations or professions it doesn't matter too much. A person with fast processing speed might read 5 books in a day, but if they are not thinking as deeply as the person who is reading slowly, or drawing as many meaningful conclusions, it's not really beneficial.