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Biomedical subjects

D B Burton

Publications and source records attributed to D B Burton.

6 recordsLinked to original sources
PubMed2001

A confirmatory factor analysis of the WISC-III in a clinical sample with cross-validation in the standardization sample.

Maximum likelihood confirmatory factor analysis was applied to the Wechsler Intelligence Scale for Children-Third Edition (WISC-III; Wechsler, 1991) data of a mixed clinical sample of 318 children. Analyses were designed to determine which of nine hypothesized oblique factor solutions could best explain intelligence as measured by the WISC-III in the clinical sample. Competing latent variable models were identified in previous studies, and results in the clinical sample were cross-validated by testing all models in the WISC-III standardization sample (n = 2200). Findings in both the clinical and standardization samples supported a five-factor model including Verbal Comprehension, Constructional Praxis, Visual Reasoning, Freedom from Distractibility, and Processing Speed factors. The Visual Reasoning factor was defined primarily by Picture Arrangement, whereas Mazes did not appear to improve model fit. Potential opportunities and pitfalls with regard to the interpretation of the proposed Visual Reasoning factor are discussed.

Adolescent↗
PubMed2001

A confirmatory factor analysis of the cognitive capacity screening examination in a clinical sample.

Structured mental status examinations offer several advantages over unstructured mental status examinations; however, few have been subjected to advanced psychometric analysis. Confirmatory factor analysis empirically tests the predictive validity of individual test indices within an a priori methodological framework. With such analysis, one can test hypotheses about the structure of latent variability within a given data set. The purpose of this study was to perform a confirmatory factor analysis of the Cognitive Capacity Screening Examination, the most comprehensive of the brief structured mental status examinations. A confirmatory factor analysis of the Cognitive Capacity Screening Examination (CCSE) was performed by applying LISREL 7 to a sample of 924 male veterans, 409 patients from a chemical dependence treatment program, and 515 individuals from a psychology consultation service. Constructs were derived from previous exploratory analysis of the scale. The results of the confirmatory factor analysis and three indices of model fit support an 11 factor model more complex than that originally formulated for the CCSE. However, three of these factors (digit span with interference, complex mental mathematics, and verbal memory) were more sensitive to impairment than other factors, accounting for over 90% of the CCSE total score variance. Although the CCSE is a more complex test than originally envisioned by its designers, it may not be necessary to give all items on the test. Either a subset of the CCSE items (the CCSE-A) or a relatively brief, informal mental status exam may be adequate for many patients.

Cognition Disorders↗
PubMed1994

A survey of treatments for post-concussion syndrome.

A survey of the members of the National Academy of Neuropsychology and the International Neuropsychological Society was conducted on current treatment approaches for post-concussion syndrome. The interventions that were found useful most frequently included education about the effects of head injury, reassurance that the symptoms are part of the normal recovery process, and support in coping with reactions to the symptoms. Graded resumption of activity, antidepressant medication, and cognitive restructuring were also regarded as useful. The relationships between type of treatment, factors contributing to the syndrome, ratings of treatment effectiveness, and duration of treatment were discussed.

Adaptation, Psychological↗
PubMed1993

Confirmatory factor analysis of the Wechsler Memory Scale-Revised standardization sample.

A maximum likelihood confirmatory factor analysis was preformed by applying LISREL to the variance-covariance matrix obtained from standardization of the Wechsler Memory Scale-Revised (WMS-R) (N = 316). Analyses were designed to determine which of seven hypothesized factor solutions could best explain memory function as measured by the WMS-R. Competing latent variable models were identified in previous exploratory and confirmatory factor analytic studies. The measurement error matrix was set to remove method variance shared by the immediate and delayed trials of the same subtest. Hypothesized factors were fixed and allowed to correlate. Results indicated that a three-factor model, including Attention/Concentration, Immediate and Delayed Memory, explained 91% of the score variance and produced a significantly better fit than the Attention/Concentration--General Memory or Attention Concentration--Visual/Verbal Memory solutions. Findings support previous work suggesting that the WMS-R measures separate memory functions, and that the verbal/nonverbal Index distinction may not be a viable one.

Journal Article↗