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Just because more men pursue careers in science and engineering does not mean they are actually better at math than women are. The 1 is that men think they are much better at math than they really are. Women, 2 , tend to accurately estimate their arithmetic prowess, says Shane Bench of Washington State University in the U. S., leader of a study in Springer's journal Sex Roles. There is a 3 gap between the number of men and women who choose to study and follow careers in the so-called STEM 4 of science, technology, engineering and mathematics in the U. S. This is true 5 women outperform their male 6 on mathematical tests in elementary school. Bench's study examined how people's biases and 7 experiences about their mathematical abilities make them more or less 8 to consider pursuing math-related courses and careers. Gender gaps in STEM fields are not necessarily the result of women's 9 their abilities, but rather may be due to men's overestimating their abilities, 10 Bench. His team also found that women who had more positive past experiences 11 mathematics tended to rate their numerical abilities higher than they really were. This 12 the value of positively reinforcing a woman's knack for mathematics 13 at a young age. 'Despite 14 that realism and objectivity are always best in 15 the self and making decisions, positive illusions about math abilities may be 16 to women pursuing math courses and careers,' says Bench. 'Such positive illusions could 17 to protect women's self-esteem 18 lower-than-desired performance, leading women to 19 to pursue courses in STEM fields and ultimately 20 their skills.'
【答案解析】逻辑衔接题。本句指出,女性更倾向于准确评估自己的算术能力。该句与上一句的逻辑关系为转折关系。大家通常认为“on the one hand”和“on the other hand”之间有递进或者并列的关系,事实上,这一对短语一般是用于提出两个相反的事物或看法。on the other hand在本句中意为“相反”,因此,正确答案为A选项。