On Mon, 01 Oct 2012 05:39:51 -0700, Mike Wiliams wrote: >Hello > >The S-B current edition has a SD of 15. I guess 15 "won".
I stand corrected. To confirm, I've found a history of the SB on the web which goes through the different versions. The 5th Ed, 2003, version of the SB now has an SD=15. http://www.assess.nelson.com/pdf/sb5-asb1.pdf However, Glass & Hopkins 3rd ed, 1996, remains a very popular statistics textbook (just check Amazon), I have a feeling that a fair number of people will be left with the impression that SB has an SD=16, especially if they don't take any courses in psychological testing. -Mike Palij New York University [email protected] On 10/1/12 1:00 AM, Teaching in the Psychological Sciences (TIPS) digest wrote: Subject: Re:Is p< .05 ? From: Michael Palij<[email protected]> Date: Sun, 30 Sep 2012 17:25:56 -0400 X-Message-Number: 6 One problem with the "clipboard" is the implication that IQ or intelligence scale score always have a standard deviation of 15 units -- this is only true for the Wechsler scale. The Table that Glass and Hopkins provides is, I think, better because it shows both Wechsler and Simon-Binet scales.. See below: [image: Inline image 1] Also, I forget the source (possibly a text by Guilford), the use of standard scores like T, etc, was advocated not because of the issue of decimals but people had difficulty understanding negative numbers and how their ability could be represented by a negative number (i.e., ability less than zero). --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=20829 or send a blank email to leave-20829-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
