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Introducing NEPSY-II. Gail C. Rodin, Ph.D. Assessment Consultant Pearson/PsychCorp. Use of NEPSY-II. Typical use is to determine “Is child’s performance low in particular skill areas?” Gather data on child’s strengths and weaknesses

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introducing nepsy ii

IntroducingNEPSY-II

Gail C. Rodin, Ph.D.Assessment ConsultantPearson/PsychCorp

use of nepsy ii
Use of NEPSY-II
  • Typical use is to determine “Is child’s performance low in particular skill areas?”
  • Gather data on child’s strengths and weaknesses
  • But NP tests designed primarily to distinguish normal vs. deficient performance
    • Above average or superior performance often not possible or relevant
what is considered a low score issues to consider
What is Considered a Low Score?Issues to Consider
  • WISC-IV mean subtest scores for childrenwith Mild MR

Range from:

    • 3.8 (Arithmetic)

-to-

    • 6.2 (Cancellation)
  • Most Mild MR means near 4.5
what is considered a low score issues to consider4
What is Considered a Low Score?Issues to Consider
  • Most clinical groups are not as functionally impaired as children with MR
  • Therefore, mean scores for most clinical groups expected to fall in range of 5 – 8
    • For mild to moderate disorders
what is considered a low score issues to consider5
What is Considered a Low Score?Issues to Consider
  • Effect size above .8 is considered largefor subtest scaled scores
  • Large effects translate into clinical meansof ~ 7.5
  • Moderate effect sizes:
    • .4 – .8
    • Subtest scaled scores of 7.6 – 8.8
what is considered a low score
What is Considered a Low Score?

Rules of thumb:

  • Most clinical groups obtain scaled scores between 5 and 8
  • Can use scaled score of 7 or lower as rough break-point for problem areas
    • But even scaled scores of 8 and 9 can be meaningful
what is considered a low score issues to consider7
What is Considered a Low Score?Issues to Consider
  • Subtest scaled scores are not linear
    • Distance btwn scaled scores of 9 & 8 = 12 percentiles
    • Distance btwn scaled scores of 8 & 7 = 9 percentiles
  • As approach the mean, scoring one subtest scaled score point lower drops child further compared to peers
what is considered a low score issues to consider8
What is Considered a Low Score?Issues to Consider
  • Important to consider unequal subtest scaled score differences when:
    • Looking at profiles of scores
    • Deciding if a score seems low for particular child
      • For example, same difference of 7 percentiles exists between scaled scores of:
        • 6 and 7

-and-

        • 4 and 6
what is considered a low score issues to consider9
What is Considered a Low Score?Issues to Consider
  • Score on a specific test indicates only how far child’s performance is from meanof that test
  • A low score does not necessarily imply:
    • Impairment

-or-

    • A specific diagnosis
what is considered a low score issues to consider10
What is Considered a Low Score?Issues to Consider
  • Attributions must be backed up by more than one piece of data
  • Clinician must corroborate test findings with:
    • Performance on other measures

-or-

    • Indicators of daily functioning
  • Preponderance of evidence requiredto document an impairment
slide11
Gail C. Rodin, Ph.D.

Assessment Consultant

Pearson/PsychCorp

Phone: 919.285.3652

Fax: 919.285.3654

E-mail: gail.rodin@pearson.com