nfollow the logic of the situation quite rigorously and forget other people's emotions and responses. n cope with emotional situations in a way that appears relatively unskilled and rigid. These areas may seem to them 'black' or 'white', with a consequent tendency to dogmatic decisions. nbe unaware of the strength of their own feelings until they become obsessed with an idea or a person; or find themselves responding to emotional issues with an uncharacteristic touchiness. nspend little effort on questioning their own values and beliefs. This confers a great sense of certainty, but at the expense of ignorance of alternatives and amazement when others see things in quite a different light. nfind it hard to take a middle path between extremes of emotional approval or disapproval. They can make fine distinctions of logic, but find distinctions in the emotional field much less easy.