The WASI™ as a Screening Tool for Counselors in the Referral Decision for a Neuropsychological Evaluation

PDF Version Also Available for Download.

Description

When a client has cognitive impairment resulting from cerebral dysfunction (CD) that goes undiagnosed and, therefore, untreated, psychotherapy and rehabilitation outcome is likely to be impacted negatively. Due primarily to managed care, screening for CD has reduced substantially. Master's level counselors need a cost-efficient way to detect possible CD and, thus, justify referral for neuropsychological evaluation. This study examined the Wechsler Abbreviated Scale of Intelligence™ (WASI™) instrument's ability to screen for possible CD by examining the relationship between a) WASI Performance IQ (PIQ) and Verbal IQ (VIQ) scores and neuropsychological test scores, and b) the VIQ-PIQ discrepancy and the severity ... continued below

Creation Information

Snowden, Marie Dillon August 2004.

Context

This dissertation is part of the collection entitled: UNT Theses and Dissertations and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 6850 times , with 42 in the last month . More information about this dissertation can be viewed below.

Who

People and organizations associated with either the creation of this dissertation or its content.

Chair

Committee Members

Publisher

Rights Holder

For guidance see Citations, Rights, Re-Use.

  • Snowden, Marie Dillon

Provided By

UNT Libraries

With locations on the Denton campus of the University of North Texas and one in Dallas, UNT Libraries serves the school and the community by providing access to physical and online collections; The Portal to Texas History and UNT Digital Libraries; academic research, and much, much more.

Contact Us

What

Descriptive information to help identify this dissertation. Follow the links below to find similar items on the Digital Library.

Description

When a client has cognitive impairment resulting from cerebral dysfunction (CD) that goes undiagnosed and, therefore, untreated, psychotherapy and rehabilitation outcome is likely to be impacted negatively. Due primarily to managed care, screening for CD has reduced substantially. Master's level counselors need a cost-efficient way to detect possible CD and, thus, justify referral for neuropsychological evaluation. This study examined the Wechsler Abbreviated Scale of Intelligence™ (WASI™) instrument's ability to screen for possible CD by examining the relationship between a) WASI Performance IQ (PIQ) and Verbal IQ (VIQ) scores and neuropsychological test scores, and b) the VIQ-PIQ discrepancy and the severity of disability. In this retrospective study, test scores were extrapolated from neuropsychological assessments conducted between 2001 and 2004 on 73 CD-diagnosed adults at a CARF accredited rehabilitation facility. Disability severity ratings of mild, moderate, and severe were assigned based on clinical judgment and interrater agreement. The assessment battery included the WASI and several neuropsychological tests: Halstead-Reitan TPT, TMT-A and B, and FOT; WMS-III VR-I and 2, LM-1 and 2, and MC; McCarron-Dial HVDT; SDMT; and SCT. Based upon a multitrait-multimethod matrix, mild to moderate convergent and discriminant validity was found with the WASI VIQ and PIQ traits among neuropsychological verbal and performance measures. Statistically, the SCT, TMT-A, and HVDT-right shape were most predictive of the PIQ, and the WMS-III LM-2 and MC were most predictive of the VIQ. VIQ-PIQ discrepancy did not predict severity of disability, but IQ means and subtest scores between the mild and severe groups were significantly different. Results indicated that WASI VIQ-PIQ discrepancy did not detect CD. However, WASI subtest scores of 40 or lower may justify further evaluation of potential CD. Contrary to the WASI manual, Similarities and Block Design rather than Vocabulary and Matrix Reasoning subtest scores may be more predictive of CD. This author suggested that counselors administer the WASI, SCT, and TMT-A as a time efficient screening method for CD.

Language

Identifier

Unique identifying numbers for this dissertation in the Digital Library or other systems.

Collections

This dissertation is part of the following collection of related materials.

UNT Theses and Dissertations

Theses and dissertations represent a wealth of scholarly and artistic content created by masters and doctoral students in the degree-seeking process. Some ETDs in this collection are restricted to use by the UNT community.

What responsibilities do I have when using this dissertation?

When

Dates and time periods associated with this dissertation.

Creation Date

  • August 2004

Added to The UNT Digital Library

  • Feb. 15, 2008, 3:34 p.m.

Description Last Updated

  • March 1, 2012, 3:25 p.m.

Usage Statistics

When was this dissertation last used?

Yesterday: 3
Past 30 days: 42
Total Uses: 6,850

Interact With This Dissertation

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Snowden, Marie Dillon. The WASI™ as a Screening Tool for Counselors in the Referral Decision for a Neuropsychological Evaluation, dissertation, August 2004; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc4574/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .