Hi

On Wed, 27 Feb 2002, Maxwell Gwynn wrote:
> Do you call subjecting students to ABBA music reinforcement? Don't you
> think that students might make _more_ noise in order to avoid the negative
> stimulus of that 1970's Swedish pop music? 
> 
> Excuse me? That's an ABAB design, not ABBA? 

Hey, I think there was an ABBA special on recently!  Thanks to
Max for pointing out my confusion between the ABAB design (a la
behavior analysts) and ABBA counter-balancing (a la
experimentalists).

Best wishes
Jim

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James M. Clark                          (204) 786-9757
Department of Psychology                (204) 774-4134 Fax
University of Winnipeg                  4L05D
Winnipeg, Manitoba  R3B 2E9             [EMAIL PROTECTED]
CANADA                                  http://www.uwinnipeg.ca/~clark
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