Accuracy of WAIS-III — WMS-III Joint Factor Scores When One or More Subtests Is Omitted or an Alternate Subtest Is Employed

Palmer, Barton W.; Taylor, Michael J.; Heaton, Robert K.

doi:10.1016/b978-012703570-3/50016-x

Cited by 5 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yet, it appears that incorporation of recent research is occurring. For example, a significant proportion of the sample reported administering the Visual Reproduction subtest in place of the Faces subtest on the WMS-III, which is consistent with current literature on the increased sensitivity of Visual Reproduction to detect deficits in visual memory (Palmer, Taylor, & Heaton, 2003). Similarly, the findings indicate that Object Assembly is frequently omitted from WAIS-III administrations, which may reflect incorporation of research noting relatively low reliability for this subtest (Tulsky & Ledbetter, 2000).…”

Section: Of Adult Patients Receiving Specific Neuropsychological Testssupporting

confidence: 78%

Current state of standardization adherence: A reflection of competency in psychological assessment.

Wolfe‐Christensen¹,

Callahan²

2008

Training and Education in Professional Psychology

View full text Add to dashboard Cite

Identification of competencies to be mastered during training and maintained through lifelong learning has recently received considerable attention. This study investigated a single, commonly identified core assessment skill competency, adherence to standardized administration procedures, to establish a current appreciation of baseline competency in the profession. Standardization adherence among 150 professionals averaged 70% and was not significantly related to level of education or the time elapsed since degree attainment. Contrary to expectations, adherence was significantly higher for less frequently administered tests than for those more commonly administered. Accessibility to procedural instructions (e.g., embedded within stimuli) was unrelated to levels of adherence.

show abstract

Section: Of Adult Patients Receiving Specific Neuropsychological Testssupporting

confidence: 78%

Current state of standardization adherence: A reflection of competency in psychological assessment.

Wolfe‐Christensen¹,

Callahan²

2008

Training and Education in Professional Psychology

View full text Add to dashboard Cite

show abstract

“…Kolmogorov-Smirnov z-tests indicated that, of the six scaled scores in the 22q11.2DS group and four in the other two groups, only the distribution of the WISC-III block design scores in the 22q11.2DS group deviated from normality. Scaled scores were then transformed to z-scores with a mean of 100 and standard deviation of 15, as suggested by Palmer et al (2003). One sample t-tests were computed within each diagnostic group to determine whether scores deviated from the the mean raw scaled score of 100.…”

Section: Methodsmentioning

confidence: 99%

Prodromal symptoms in adolescents with 22q11.2 deletion syndrome and schizotypal personality disorder

Shapiro

Cubells

Ousley

et al. 2011

Schizophrenia Research

View full text Add to dashboard Cite

Adolescents with 22q11.2 Deletion Syndrome (22q11.2DS) and Schizotypal Personality Disorder (SPD) are at increased risk for the development of psychosis based, respectively, on genetic or behavioral factors. Thus both groups would be expected to manifest heightened rates of the prodromal signs that typically precede psychosis. Although there are now standardized procedures for assessing prodromal symptoms, there has been little research on the manifestation of these symptoms in 22q11.2DS patients, and no studies of differences in prodromal symptom patterns between genetically and behaviorally defined at-risk groups. In this study, demographically-matched groups of 23 SPD, 23 22q11.2DS, and 23 control participants were administered the Structured Interview for Prodromal Syndromes (SIPS). Both risk groups showed elevated positive, negative, disorganized, and general prodromal symptoms, as well as elevations on 10 of the same individual symptom items, relative to the control group. Approximately 60% of individuals in the 22q11.2DS group and 70% of individuals in the SPD group met symptom criteria for a prodromal psychosis syndrome. The 22q11.2DS group scored significantly higher than the SPD group on the “decreased ideational richness” item and showed a trend toward greater motor abnormalities. The results suggest that these two high-risk groups are similar in prodromal symptom presentation, possibly as a result of overlapping causal mechanisms, and that standardized measures of prodromal syndromes like the SIPS can be used to identify 22q11.2DS patients at greatest risk for conversion to psychosis.

show abstract

“…Alternatively, an examiner can prorate the existing scores to obtain an estimated Verbal IQ and Performance IQ, but the WAIS–III Administration and Scoring Manual (Wechsler, 1997) prohibits one from computing a FSIQ if two or more subtests have not been administered. Palmer, Taylor, and Heaton (in press) have created tables to help examiners with such proration, but any prorated score might be challenged by some who could argue that a prorated score has additional error and is not as accurate a measure. This is not a universally accepted method of portraying general mental ability in forensic or psychoeducational settings.…”

Section: Why a Gai?mentioning

confidence: 99%

Development of a General Ability Index for the Wechsler Adult Intelligence Scale—Third Edition.

Tulsky¹,

Saklofske²,

Wilkins³

et al. 2001

Psychological Assessment

View full text Add to dashboard Cite

The Wechsler Adult Intelligence Scale--Third Edition (WAIS-III; D. Wechsler, 1997) permits the calculation of both traditional IQ and index scores. However, if only the subtests constituting the index scores are administered, especially those yielding the Verbal Comprehension and Perceptual Organization Indexes, there is no equivalent measure of Full Scale IQ. Following the procedure for calculating a General Ability Index (GAI; A. Prifitera, L. G. Weiss, & D. H. Saklofske, 1998) for the Wechsler Intelligence Scale for Children--Third Edition (D. Wechsler, 1991), GAI normative tables for the WAIS-III standardization sample are reported here.

show abstract

Accuracy of WAIS-III — WMS-III Joint Factor Scores When One or More Subtests Is Omitted or an Alternate Subtest Is Employed

Cited by 5 publications

References 42 publications

Current state of standardization adherence: A reflection of competency in psychological assessment.

Current state of standardization adherence: A reflection of competency in psychological assessment.

Prodromal symptoms in adolescents with 22q11.2 deletion syndrome and schizotypal personality disorder

Development of a General Ability Index for the Wechsler Adult Intelligence Scale—Third Edition.

Contact Info

Product

Resources

About