Possible Clues:

• None of them are fully committed to a certain extent - that's some measure of how clever they are (8'1,6)
• Academic achievement
• Award at university for single-minded people perhaps in Fahrenheit 451,for example
• Single man's deodorant?
• Academic attainment
• Single guys to some extent are part of academic programme (8'1,6)
• Doctor researched globe for an exam