We've been here before -- from a usability study looking at how students use (or don't use as the case may be) various library database pages:
In 2006, Steve Krug said internet users were mostly looking for something clickable to click on; BGSU students, by contrast, often looked for a search box to search in. When a search was unsuccessful, instead of retooling it, the student looked for a different search box and tried the same search again. The students in the study tried to change the subset of information they were searching, not the search they had already decided was the best one.
Okay, so the next logical question might be, is this a student preference or is there something about the design of the website that drives them to it? Maybe yes, maybe no but considering the effort we put into all of this, it's certainly worth testing.
But hark! A bit further down in the same study -- apparently vendor consolidation will save the day:
Therefore, if we want students to use a wider range of our resources, it is crucial that we teach them to recognize the resources that will be useful for them. As the brand diversity of our resources narrows, vendors and publishers merge, and vendors market more and more to end users, this strategy may become easier to adopt.