Jim, Thanks for the references - I'll check them out. I was aware of the debate (I've even read some of it), but I got the impression that the "interval at least" folks "won." That was the way I was trained, at least. What do others think?
Larry > -----Original Message----- > From: jim clark [mailto:[EMAIL PROTECTED]] > Sent: Monday, January 21, 2002 5:54 PM > To: Teaching in the Psychological Sciences > Subject: Re: Primary Trait Analysis > > > Hi > > On Mon, 21 Jan 2002, Larry Daily wrote: > > I have a question for the statistically savvy TIPSters - > what are your > > thoughts on primary trait analysis from a statistical > standpoint? Off the > > top of my head, the numbers derived from a PTA rubric may > or may not be > > interval and that would seem to be a problem with using > means, t-tests, etc, > > I am not familiar with PTA, but it is not correct (with some > dissenters) to think that scales must be interval for means, > t-tests, etc. to be used in statistical analysis. Order is all > that is required. See various Gaito publications, such as: > > Gaito, J., 1960, Scale, classification and statistics. > Psychological Review, 67, 277-278. > > Gaito, J., 1980, Measurement scales and statistics: Resurgence of > an old misconception. Psychological Bulletin, 87, 564-567. > > Gaito, J., 1986, Some issues in the measurement-statistics > controversy. Canadian Psychology, 27, 63-68. > > Best wishes > Jim > > ============================================================== > ============== > 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 ============================================================================ --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED] --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
