is a larger impact on men's decisions about fields of study. Customer preference studies A 2010 study conducted by David R. Hekman and colleagues found that customers, who viewed videos featuring a black male, a white female, or a white male actor playing the role of an employee helping a customer, were 19 percent more satisfied with the white male employee's performance. This discrepancy with race can be found as early as 1947, when Kenneth Clark conducted a study in which black children were asked to choose between white and black dolls. White male dolls were the ones children preferred to play with. Gender pay differences Gender inequalities still exist as social problems and are still growing in places. In 2008, recently qualified female doctors in New York State had a starting salary $16,819 less than their male counterparts. An increase compared to the $3,600 difference of 1999. The pay discrepancy could not be explained by specialty choice, practice setting, work hours, or other characteristics. Nonetheless, some potentially significant factors like family or marital status were not evaluated. A case study carried out on Swedish medical doctors showed that the gender wage gap among physicians was greater in 2007 than in 1975. Wage discrimination is when an employer pays different wages to two seemingly similar employees, usually on the basis of gender or race. Kampelmann and Rycx (2016) explain two different explanations for the differences observed in wages. They explain that employer tastes and preferences for foreign workers and/or customers can translate into having a lower demand for them as a whole and as a result offering them lower wages, as well as the differences in career dynamics, whereas, if there is large differences between immigrant workers and "native" workers, it could lead to wage discrimination for immigrant workers. Within the discrimination of domestic to foreign workers there is also discrimination among foreign workers based on gender. Female migrant workers are faced with a "triple-discrimination". This "triple-discrimination" states that women foreign workers are more at risk to experience discrimination because they are women, unprotected workers, and migrant workers. Gender Power Gap According to a study conducted by gender data firm ExecuShe, women account for only a quarter of the total number of top executives at S&P 500 companies, while controlling just 1 percent of the value of shares held among fellow corporate leaders. “Male executives held roughly $770 billion worth