The aim of the present work was to validate an Italian version of the compo
site scale (CS) of morningness (Smith, Reilly & Midkiff, 1989: Smith, C.S.,
Reilly, C., & Midkiff, K. (1989). Evaluation of three circadian rhythm que
stionnaires with suggestions for an improved measure of morningness. Journa
l of Applied Psychology, 74(5), 728-738) by means of psychological and phys
iological variables. A sample of 89 Ss was administered the CS. Body temper
ature, subjective alertness and subjective mood readings were collected at
& a.m., 2 p.m. and 11 p.m. On the whole results indicate a good validity of
CS. With regard to the criterion converting CS scores into a type, new sta
ndard cut-off scores are discussed in the present study. (C) 2000 Elsevier
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