You have probably completed a personality test sometime—for fun, or as part of a job application process, perhaps. What do your results mean? Do they reveal what you will do in the future? Probably ...

In college admissions, test optional has transformed from the exception to the rule. More than 1,900 U.S. colleges and universities now do not require applicants to submit standardized test scores.

From good old Myers-Briggs to describing people in the form of colors or animals, some 100 million workers take personality tests each year. Their appeal is both potent and obvious: The idea is that ...