to delay marriage. This meant that the marriage market available to any women who "delay[ed] marriage to pursue a career ... would not be as depleted. Thus the Pill could have influenced women's careers, college majors, professional degrees, and the age at marriage." Studies on sexism in science and technology fields have produced conflicting results. Moss-Racusin et al. found that science faculty of both sexes rated a male applicant as significantly more competent and hireable than an identical female applicant. These participants also selected a higher starting salary and offered more career mentoring to the male applicant. Williams and Ceci, however, found that science and technology faculty of both sexes "preferred female applicants 2:1 over identically qualified males with matching lifestyles" for tenure-track positions. Studies show parents are more likely to expect their sons, rather than their daughters, to work in a science, technology, engineering or mathematics field – even when their 15-year-old boys and girls perform at the same level in mathematics. There are more men than women trained as dentists, this trend has been changing. A survey by the U.K. Office for National Statistics in 2016 showed that in the health sector 56% of roles are held by women, while in teaching it is 68%. However equality is less evident in other area; only 30% of M.P.s are women and only 32% of finance and investment analysts. In the natural and social sciences 43% of employees are women, and in the environmental sector 42%. In an article by MacNell et al. (2014), researchers used an online course and falsified the names of assistant teachers to make students believe they had either a female or a male teaching assistant. At the end of the semester, they had the students complete a course evaluation. Regardless of whether the teaching assistant was actually male or female, assistants who were perceived as female received lower course evaluations overall with distinctly lower ratings in areas of promptness, praise, fairness, and professionalism. In an article titled "Gender Differences in Education, Career Choices and Labor Market Outcomes on a Sample of OECD Countries", the researchers focused their work on how both men and women differ from their studies, their focuses, and their objectives within their work. Women are seen to have higher chances to choose the humanities and health fields while decreasing their opportunities in the sciences and social sciences fields. This indicates that there