Key words for site search: Keith E Rice, Integrated SocioPsychology, evolution, biological rhythms, Coren, internal clocks, external world, Stanley Coren, jet lag, sleep disturbances, desynchronisation, Abe, gastrointestinal disturbances, Aschoff, light-dark pattern, Juergen Aschoff, Shin Yamazaki, Numano, Hida, Rika Numano, Michikazu Abe, Tei, Akiko Hida, Takahashi, Ueda, Block, Sakaki, Ri-ichi Takahashi, Masatsugu Ueda, Menaker, Gene Block, Yoshiyuki Sakaki, shiftwork, Michael Menaker, Hajime Tei, Wegmann, Klein, sleep-wake cycle, K E Klein, H M Wegmann, Hunt, Schwartz, Recht, B I Hunt, phase delay, William Schwartz, Lew, melatonin, hormone, phase advance, Lawrence Recht, Yamazaki, Martin, Robert Lew, P Martin, REM, SCN, Karl-Arne Stokkan, Boivin, Stokkan, Czeisler, Diane Boivin, Minors, Charles Czeisler, Dijk, Duffy, Folkard, Derk-Jan Dijk, Jeanne Duffy, Simon Folkard, Totterdell, Waterhouse, David Minors, Wilkinson, Peter Totterdell, sleep deprivation, Tilley, James Waterhouse, Andrew Tilley, Robert Wilkinson, circadian rhythm, Warren, Watson, body temperature, circadian trough, Drud, P S G Warren, B Watson, M Drud, Knutsson, Okersted, Jonsson, Orth-Gomèr, A Knutsson, T Okersted, B G Jonsson, Moore-Ede, K Orth-Gomèr, Martin Moore-Ede, Hawkins, Armstrong-Esther, L H Hawkins, Monk, Armstrong- Esther, Timothy Monk, Drew Dawson, Scott Campbell, Rios, Allan Strogatz, Ronda, Strogatz, Joseph Ronda, Ramiro Sánchez, David Rios, Freitag, Sánchez, Walter Freitag, Gary Richardson, Richard  Kronauer, Richardson, Kronauer, Diane Gold, Speizer, Suzanne Rogacz, Gold, Bock, Rogacz, Naomi Bock, TorD Tosteson, Timothy Baum, Coleman, Tosteson, Baum, Frank Speizer, Johnson, Richard Coleman, Brown, Michael Johnson, Emery Brown, A Reinberg, P Andlauer, Malberg, Reinberg, Andlauer, J DePrins, W Malberg, N Vieux, DePrins, Baurdeleau, Vieux, individual differences, P Baurdeleau