title: Ideas galore: Examining the moods of a modern caveman.
abstract: A self-experiment by Roberts found that watching faces on early morning television triggered a delayed rhythm in mood. This surprising result is compared with previous research on circadian rhythms in mood. I argue that Roberts' dual oscillator model and theory of Stone-Age living may not provide the explanation. I also discuss the implications of self-experiments for scientific practices.
authors.affiliation: Institute of Work Psychology, University of Sheffield, Sheffield, S10 2TN, England p.totterdell@sheffield.ac.uk http://www.sheffield.ac.uk/~iwp.
authors.forename: Peter
authors.initials: P
authors.lastname: Totterdell