Academically Adrift: Limited Learning on College Campuses, a book (Univ. Of Chicago Press)by Richard Arum, derives from an unusual study that followed several thousand undergraduates in the USA through 4 years of study. The important finding is that 45% of students made no significant improvement in their critical thinking, reasoning or writing skills during the first two years of college. After four years, 36% showed no significant gains in these so-called "higher order" thinking skills.
Being able to be critical about what you find and read and then build up an agument is what I am teaching most of the time. Therefore this report is of interesting to me and is a light bulb moment for those of us involved in Information Literacy. For more see here and here.