|Date: ||Sun, 23 Jan 2005 09:39:59 -0500|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>|
|From: ||"Tiffany S. Perkins" <Tiffola@aol.com>|
|Subject: ||Sponsor Bias|
|Content-Type: ||text/plain; charset=iso-8859-1|
Has anyone heard of a rule of thumb regarding how much scores attributed to the sponsor of a survey should be "discounted?"
For example, if an insurance company does a survey of its clients via telephone interviews and identifies itself as the sponsor and at some point during the interview, asks the participants to state the 2 insurance companies they feel are #1 and #2, it is probable that the sponsor will get the highest #1 percentage.
Is there some objective way to compare % for all of the stores that are selected, while taking into account the bias toward the sponsor?
Any suggestions or references would be greatly appreicated.
Tiffany Perkins-Munn, Ph.D.