I've just been reading a new paper by Hodoba (Sleep Research Online,
1999, at www.sro.org/1999/Hodoba/101 on the effect of chewing gum on
subjective feelings of sleepiness.
He says yes, and among other data, reports a Mann-Whitney test (exptl
= 21, control = 43) with a median sleepiness score of 2 for the
experimentals (range 1-3) and median for the controls of 2 (range
1-5). He reports a U of 282.0, Z of 2.6278, and significance at
p = 0.0086
Question: is this possible?
-Stephen
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Stephen Black, Ph.D. tel: (819) 822-9600 ext 2470
Department of Psychology fax: (819) 822-9661
Bishop's University e-mail: [EMAIL PROTECTED]
Lennoxville, QC
J1M 1Z7
Canada Department web page at http://www.ubishops.ca/ccc/div/soc/psy
Check out TIPS listserv for teachers of psychology at:
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