I have been working on laterality, specifically handedness, for some time. But there is a lot more to laterality than handedness and lateralisation in the brain is an important topic in neuroscience. The following paper caught my eye as being potentially useful to my young, or even not so young, colleagues.
What McKay et al show is that self-esteem is lateralized.So imagine subjects hearing particular words in each ear (i.e. one ear at a time). It turns out that words heard via the right ear (which are processed in the left-hemisphere) generate a higher feeling of self-esteem than those heard via the left-ear. So if you are going to whisper sweet nothings to your partner, or your desired partner, then you know what to do. I think you will be pleased with the results.
Alternatively, if you want to castigate your PhD student for their general fecklessness, use the left-ear if possible. As far as I can recall, the sense of smell is also lateralized 'though this may be harder to take advantage of in practice.
McKay, R., Arciuli, J., Atkinson, A., Bennett, E., & Pheils, E. (2010). Lateralisation of self-esteem: An investigation using a dichotically presented auditory adaptation of the Implicit Association Test. Cortex, 46 (3), 367-373