Our world requires that decisions be sourced and footnoted, and if we say how we feel, we must also be prepared to elaborate on why we feel that way. I think that approach is a mistake, and if we are to learn to improve the quality of the decisions we make, we need to accept the mysterious nature of our snap judgements. We need to respect the fact that it is possible to know without knowing why we know and accept that — sometimes — we’re better off that way.

How you feel about your abilities — your academic “self-concept” — in the context of your classroom shapes your willingness to tackle challenges and finish difficult tasks. It’s a crucial element in your motivation and confidence.

Gottman has found, in fact, that the presence of contempt in a marriage can even predict such things as how many colds a husband or a wife gets; in other words, having someone you love express contempt toward you is so stressful that it begins to affect the functioning of your immune system.

Asian children can perform basic functions, such as addition, far more easily. Ask an English-speaking seven-year-old to add thirty-seven plus twenty-two in her head, and she has to convert the words to numbers (37 + 22). Only then can she do the math: 2 plus 7 is 9 and 30 and 20 is 50, which makes 59. Ask an Asian child to add three-tens-seven and two-tens-two, and then the necessary equation is right there, embedded in the sentence. No number translation is necessary: It’s five-tens-nine.

All they were using for their prediction was their analysis of the surgeon’s tone of voice. In fact, it was even more basic than that: if the surgeon’s voice was judged to sound dominant, the surgeon tended to be in the sued group. If the voice sounded less dominant and more concerned, the surgeon tended to be in the non-sued group. Could there be a thinner slice? Malpractice sounds like one of those infinitely complicated and multidimensional problems. But in the end it comes down to a matter of respect, and the simplest way that respect is communicated is through tone of voice, and the most corrosive tone of voice that a doctor can assume is a dominant tone.

All war is absurd. For thousands of years, human beings have chosen to settle their differences by obliterating one another. And when we are not obliterating one another, we spend an enormous amount of time and attention coming up with better ways to obliterate one another the next time around. It’s all a little strange, if you think about it.

High-tech companies like Google or Microsoft carefully measure the cognitive abilities of prospective employees out of the same belief: they are convinced that those at the very top of the IQ scale have the greatest potential.

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