I think that phrase has created much
misunderstanding. I try to convince my students that correlation is
necessary but not sufficient for establishing a causal
relationship.
Karl L. Wuensch, Department of Psychology,
East Carolina University, Greenville NC 27858-4353
Voice: 252-328-4102 Fax: 252-328-6283
[EMAIL PROTECTED]
http://core.ecu.edu/psyc/wuenschk/klw.htm