<p>The small ones may be niches which fit the few students who major in them well, while not being attractive to those not focused on the subjects. Some of the larger ones (e.g. psychology, biology, English, economics, business) may end up collecting a lot of the students who have not really completely decided but had to choose a major when approaching the “must declare a major” deadline in the fourth or fifth semester.</p>
<p>The article notes that the least satisfying majors at Harvard were: music, economics, engineering, chemical and physical biology, and government. These appear to be the kind of majors frequently chosen for pre-professional reasons (musician, finance jobs, finance jobs, pre-med, politician).</p>