A quick look through recent issues of Psychological Science show a variety of choices, but over half of the articles I just looked at use SEM (which I've always assumed was the convention). I see two articles that use 95% CIs and one that uses SD/2. One of the two articles using 95% CI (upper half only) is about the use of Confidence Intervals (2004, Editors Can Lead Researchers to Confidence Intervals, but Can't Make Them Think, Psychological Science, 15, 119-126).
Paul Smith Alverno College Milwaukee -----Original Message----- From: Peterson, Douglas [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 23, 2004 2:57 PM To: Teaching in the Psychological Sciences Subject: RE: Graph Question: Error Bars Regardless what you depict, because there is not convention, indicate what the bars are in the figure caption. Confident intervals (my preference) are interpreted differently than error bars and lack of clarity may lead to misinterpretation. Doug Doug Peterson Associate Professor of Psychology The University of South Dakota Vermillion SD 57069 (605) 677-5295 [EMAIL PROTECTED] -----Original Message----- From: Robert Herdegen [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 23, 2004 2:12 PM To: Teaching in the Psychological Sciences Subject: Graph Question: Error Bars TIPSters: I'm working with a student on preparing graphs for his senior thesis. He plans to include error bars with each of the points on his figures, but I'm not sure whether there is a convention for *what* is to be displayed in error bars: standard deviation? standard error? confidence intervals? The values are all different, of course, and each shows something a little different. Are there any standards for what one should show in error bars? Bob Herdegen ******************************************** Robert T. Herdegen III Elliott Professor of Psychology and Chairman Department of Psychology Hampden-Sydney College Hampden-Sydney, VA 23943 434-223-6166 [EMAIL PROTECTED] ******************************************** --- 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] --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
