In Sweden, schooling boosts knowledge

Yep, School Makes You Smarter in terms of knowledge, writes Daniel Willingham.

Swedish 18-year-olds were tested on word meanings and reading technical prose, which uses “crystallized” intelligence (what you know) before military service. They also took spatial reasoning and logic tests, which use “fluid” intelligence (reasoning that is not dependent on particular knowledge).

Students of the same age with more days of schooling performed better on the crystallized intelligence tests; fluid intelligence wasn’t linked to schooling.