Hardly surprising …

… Why College Graduates Still Can't Think — The James G. Martin Center for Academic Renewal.

In 2010, the Noel-Levitz Employer Satisfaction Survey of over 900 employers identified “critical thinking [as] the academic skill with the second largest negative gap between performance satisfaction and expectation.” Four years later, a follow-up study conducted by the Association of American Colleges and Universities found little progress, concluding that “employers…give students very low grades on nearly all of the 17 learning outcomes explored in the study”—including critical thinking—and that students “judge themselves to be far better prepared for post-college success than do employers.”

Well, it's hard to think critically if you aren't interested in views different from your own.