Math and science majors are popular until students realize what they’re getting themselves into, according to new research.

In a working paper published by the National Bureau of Economic Research, researchers Ralph Stinebrickner of Berea College and Todd R. Stinebrickner of the University of Western Ontario say that college students are fleeing from math, physics, chemistry and the like after dipping into some classes.

The researchers surveyed 655 students entering Berea College, a private liberal arts college located in Kentucky, in the falls of 2000 and 2001. The students were asked about their beliefs pertaining to majors 12 times during each year they were in school, the first time prior to starting college. The questions covered a variety of topics, including their certainty of graduating with a particular major, their anticipated grade point average and the amount of work they expected to do each day.