"Similarly, in their book, “Academically Adrift: Limited Learning on College Campuses,” Richard Arum and Josipa Roksa studied twenty-four hundred college students at twenty-four different universities over a four-year period2. They reported that critical thinking and other skills such as writing were no longer progressing during college as compared to previous generations of students."

https://www.psychologytoday.com/us/blog/the-intuitive-parent/201703/the-emerging-crisis-in-critical-thinking