A new study by two University of Michigan psychology professors shows that presenting girls with stereotypically feminine STEM role models—like Barbie’s pink laptop-toting bombshell—might actually discourage them from pursuing science, technology, engineering, and math. Cos middle school-aged girls who are already feeling like they aren’t good at STEM are going to be turned off by the added pressure of having to become both stereotypically girlie and math and science geniuses. So the message that you can be fashionable and smart may actually be demotivating, particularly to young girls. The researchers concluded that we need a “better understanding of feminine STEM figures aimed at motivating young girls.”