Gifted Bulletin Board

Welcome to the Gifted Issues Discussion Forum.

We invite you to share your experiences and to post information about advocacy, research and other gifted education issues on this free public discussion forum.
CLICK HERE to Log In. Click here for the Board Rules.

Links
DITD Logo

Learn about the Davidson Academy’s online campus for profoundly gifted students living anywhere in the U.S.

The Davidson Institute for Talent Development is a national nonprofit dedicated to supporting profoundly gifted students through the following programs:

  • Davidson Fellows Scholarship
  • Davidson Young Scholars
  • Davidson Academy
  • THINK Summer Institute
  • DITD FaceBook   DITD Twitter   DITD YouTube
    The Davidson Institute is on Facebook, Twitter and YouTube!

    How gifted-friendly is
    your state?

    Subscribe to the Davidson Institute's eNews-Update

    Who's Online
    0 registered (), 0 Guests and 275 Spiders online.
    Key: Admin, Global Mod, Mod
    Newest Members
    Eric Johnson, cmh, bethanyc3, SageC, AmandaParkinson
    10658 Registered Users
    December
    Su M Tu W Th F Sa
    1 2 3 4 5 6 7
    8 9 10 11 12 13 14
    15 16 17 18 19 20 21
    22 23 24 25 26 27 28
    29 30 31
    Page 3 of 3 < 1 2 3
    Topic Options
    #243647 - 08/23/18 10:04 AM Re: CogAT to IQ [Re: Aden]
    Aden Offline
    Junior Member

    Registered: 07/29/18
    Posts: 35
    And how are raw scores (for both subtests, FSIQ, and GAI) converted into scaled scores?

    Top
    #243650 - 08/23/18 11:02 AM Re: CogAT to IQ [Re: Aden]
    aeh Offline
    Member

    Registered: 04/26/14
    Posts: 3465
    Raw scores are converted into scaled scores using the age-based norm tables. Some cognitive skills have known population profiles vs age (e.g., working memory and fluid reasoning reach peaks in the early 20s), so finding an individual's standing among age-peers requires using age norms. Raw scores apply only to scaled scores for subtests.

    Index scores (FSIQ, GAI, VCI, PRI, WMI, PSI) are determined by taking the sum of the relevant subtest scaled scores and converting them to standard scores using the composite score tables, which are not additionally age-normed. (All ages use the same conversion charts.)

    For example, say you get a raw score of 9 (meaning you received credit for the first nine items on the task) on Arithmetic (again, none of these are real numbers, as I don't have the tables in front of me). You go to the age-norm tables, and find that, at your age, that converts to a scaled score of 8. After you obtain scaled scores on all of your subtests, you add them up and (say) get a sum of scaled scores of 90. When you take this to the FSIQ charts, this comes out as a standard score of 95, in the Average range. We then say your IQ is 95.

    Top
    #243652 - 08/23/18 12:22 PM Re: CogAT to IQ [Re: Aden]
    Aden Offline
    Junior Member

    Registered: 07/29/18
    Posts: 35
    And is there any chance of finding these tables, or are they usually kept confidential by psychologists?

    Top
    #243653 - 08/23/18 01:04 PM Re: CogAT to IQ [Re: Aden]
    aeh Offline
    Member

    Registered: 04/26/14
    Posts: 3465
    The tables are the intellectual property of Pearson, the publisher. There is no reason you would need to see them if you are not an assessment professional. If you have other specific questions relating to scores or scoring, I would be happy to try to answer those that can be answered ethically, but perhaps backchannel. Feel free to pm me.

    Top
    #243654 - 08/23/18 01:36 PM Re: CogAT to IQ [Re: Aden]
    Aden Offline
    Junior Member

    Registered: 07/29/18
    Posts: 35
    Ok. Sorry for asking about the tables. Thank you so much for your help!

    Top
    #243655 - 08/23/18 02:20 PM Re: CogAT to IQ [Re: Aden]
    aeh Offline
    Member

    Registered: 04/26/14
    Posts: 3465
    You are welcome. Keep using your curiosity to learn and solve problems!

    Top
    Page 3 of 3 < 1 2 3


    Moderator:  M-Moderator 
    Recent Posts
    Plea for advice- HS testing no longer LD
    by aeh
    Today at 09:10 AM
    Lost in CT
    by Pemberley
    Today at 07:09 AM
    Not feeling fulfilled
    by puffin
    Yesterday at 12:53 PM
    Maine School of Science and Mathematics
    by Pdxgft
    12/08/19 01:22 PM
    What did you do with your Pre-K/K child?
    by Alannc44
    12/08/19 05:06 AM
    Davidson Institute Twitter