https://www.isegoria.net/2014/01/self-selection-in-wonderland/ From the ancient Greek for equality in freedom of speech; an eclectic mix of thoughts, large and small Thu, 21 May 2026 16:19:21 +0000 hourly 1 http://wordpress.org/?v=3.6.1 https://www.isegoria.net/2014/01/self-selection-in-wonderland/comment-page-1/#comment-1109844 Isegoria Fri, 24 Jan 2014 14:12:32 +0000 http://www.isegoria.net/?p=34078#comment-1109844 Right — and not just non-graduates, but also anyone who didn’t go to college in the first place.

]]> https://www.isegoria.net/2014/01/self-selection-in-wonderland/comment-page-1/#comment-1109830 James James Fri, 24 Jan 2014 13:54:41 +0000 http://www.isegoria.net/?p=34078#comment-1109830 So the reason everyone’s M is shown as higher than S is because non-graduates are not included? If so, that would imply that non-graduates have higher S than M, which seems reasonable.

]]> https://www.isegoria.net/2014/01/self-selection-in-wonderland/comment-page-1/#comment-1109744 Isegoria Fri, 24 Jan 2014 12:18:29 +0000 http://www.isegoria.net/?p=34078#comment-1109744 Those scores are z-scores, so they are all normalized to have a mean of zero and a standard deviation of one. College entrance exams explicitly test verbal and mathematical ability, and different majors emphasize one over the other, while spatial ability seems to come along for the ride.

]]> https://www.isegoria.net/2014/01/self-selection-in-wonderland/comment-page-1/#comment-1109616 James James Fri, 24 Jan 2014 09:19:02 +0000 http://www.isegoria.net/?p=34078#comment-1109616 I understand that Verbal, Spatial and Mathematical abilities are separate (even if correlated), so it’s a bit weird that this chart shows everyone’s Mathematical ability as higher than their Spatial. Shouldn’t they be scaled to have the same average? Or not joined by lines, or just put on separate graphs.

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