I've always been interested in personality types, in fact I did part of my degree in Personality Psychology. So to start to explain what personality is all about is quite a big task. But there are some aspects of personality that are quite easy to spot, and if you can spot them they can be helpful in explaining some of the reasons why people behave and react differently from you in given circumstances. Just having an appreciation of some of those differences can really help in getting the best out of your working relationships with colleagues. One of the most obvious dimensions of personality is that of introversion and extraversion.