Criteria's employment test portfolio includes three personality tests: the Criteria Personality Inventory (CPI), the Customer Service Aptitude Profile (CSAP), and the Sales Achievement Predictor (SalesAP). The CSAP and SalesAP are actually the same test instrument and measure the same personality traits, but they produce different score reports and recommendations because customer service and sales positions require different personalities. For example, personality traits such as Assertiveness and Competitiveness are traditionally associated with sales roles, while traits like Cooperativeness and Patience are associated with customer service roles.
We found this article on introversion and extraversion to be interesting. (Another article on the same topic by the same author is found here.) We agree that certain personality dimensions tend to be valued with a one-way function, (e.g. the author points out there are even self-help courses aimed at "curing" introversion and helping people discover their inner extrovert). The article is a good reminder that there are merits at both ends of the introvert-extravert spectrum. The discussion focuses largely on the subjective experience of an individual in accepting (and being accepted for) their orientation when it comes to crowds and interactions. The pictures, however, remind us of people who have achieved great public distinction despite a preference for plenty of alone time.