True believers in personality assessments as tools to categorize and judge employees and students are about to have their convictions and practices challenged in an upcoming HBO documentary, Persona.
In short, the personality assessments used in business and academic settings are based on false assumptions of personality, use the Barnum Effect to increase employer and employee acceptance, and are about as valid as horoscopes.
An essential point that HR organizations should note before the lawsuits start: Personality assessments are useful as tools for self-reflection and team building. However, according to the documentary (and volumes of research), using personality assessments to make decisions about people is dangerous, harmful, and discriminatory.
Enjoy the trailer...