Week 10
P/F Writing Assignment

Essential information about the tests

• Tests with mean=100, SD=15
  • WISC-III (FSIQ, VIQ, PIQ, factor indexes,)
  • WIAT
  • ABAS
• Tests with mean=50, SD=10
  • ASCA
• Tests with mean=10, SD=3
  • the 12 subtests of the WISC-III (Information to Symbol Search)

Questions to answer

1. What is Billy's z-score on:
   • FSIQ (WISC-III)
   • Similarities subtest on WISC-III
   • WIAT Mathematics composite
   • ASCA Overreactivity
2. What stanines do these four scores represent?
3. How many standard deviations from the mean did Billy score on:
   • ABAS Adaptive Behavior composite
   • ASCA Attention Deficit/Hyperactivity
4. What stanines do these two scores represent?
5. If translated into SAS (i.e., IQ) units, what would Billy's score be on:
   • ASCA Solitary Aggressive-Impulsive
   • ABAS Home Living
6. What percentiles do Billy's scores on the following scales represent (we are assuming national norms here)? (Note: You will need to use one or more of the "conversion tables" linked to the web reading list for Week 12. They are also linked inside the Glutting Guide.)
   • WISC-III Verbal IQ
   • WIAT Oral Language
   • ASCA Oppositional Defiance
7. How many standard deviations higher did he score on ABAS Home Living than on WISC-III Full Scale IQ?
8. Billy's WIAT Mathematics score was 59 and his WIAT Oral Language score was 62. What would you need to know to conclude that he is relatively better in oral language than math?
9. Speculate on why there were no grade equivalent (GE) scores in the report.
10. What does the WISC-III assess?
11. What did the psychologists conclude about whether Billy's language and math skills are consistent with his cognitive ability?
12. What data do you think led the psychologists to this conclusion? Be specific.