Raymond Cattell is one of the founding fathers of the trait perspective in personality psychology. He is widely known for his role in the development of factor analysis, a statistical tool for ...

Social introverts, thinking introverts, anxious introverts and restrained introverts all have positive qualities.

Where mood disorders can cause temporary or fluctuating changes in mood, personality disorders cause symptoms that remain consistent over time and across a range of situations. For example, bipolar ...

Over the years, when people have asked if I’m an introvert or an extrovert, I haven’t known what to say because I don’t identify fully with either personality type. It turns out I’m hardly alone. It’s ...