约会时女性更挑剔Women are twice as choosy as men when they go speed dating, research suggests. Why might that be?研究显示，约会的时候，女性的挑剔程度是男性的两倍。为什么会这样呢？ Trying to work out who is single in a bar, approach them and asking them out before you know anything about them is not a very efficient way of finding a girlfriend or boyfriend. There is a solution - speed dating, where a group of singles meet at an event in a bar or cafe. The men move from table to table for a fleeting date with each woman, lasting typically between three to four minutes. Afterwards the participants tell the organisers, often online, which people they want to see again. A recent study into speed dating habits concluded that if men and women go to an evening and have 22 separate dates, men are keen to see about five women again, while women would only choose to see two a gain, on average. The research was done by economists Michele Belot from the University of Edinburgh and her colleague Marco Francesconi from the University of Essex, who collected data from 84 speed dating events involving 3,600 people in the UK. This controlled environment is something that excites some economists as they are perfect for observing market forces at work- in this case the dating market. "This is something that evolutionary psychologists and biologists do recognise," says Belot. "We know that across a whole range of behaviours women tend to take fewer risks. "They relate this to the fact that making mistakes are much more costly for women than for men because of childbearing. So obviously if you make a mistake in dating the wrong man and having a relationship with the wrong man, you might have nine months...
