This book by Richard Arum and Josipa Roksa draws on their extensive research. It shows that many undergraduates learn little or nothing when it comes to critical thinking, complex reasoning, and writing ability. The main reasons are generally poor academic preparation prior to college, and low expectations and demands in college. Rather than close the gap between high and low performing students, a case can be made that colleges increase the disparity.
Academically Adrift: Limited Learning on College Campuses
DrDougGreen.com If you like the summary, buy the book