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Title: Development of the Cambridge Contextual Reading Test for improving the estimation of premorbid verbal intelligence in older persons with dementia.
Author: Beardsall, Lynn.
ISNI:       0000 0001 3452 5516
Awarding Body: University of East Anglia
Current Institution: University of East Anglia
Date of Award: 1995
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Beardsall and Huppert (1994) have devised a major modification of the National Adult Reading Test (NART) (Nelson, 1982; 1991) to assess premorbid intelligence in older person's suffering from dementia by setting the words within semantic and syntactic context. This test, the Cambridge Contextual Reading Test (CCRT), was found to yield a higher and hence more accurate measure of word reading ability in mild/moderate dementia patients than the HART. However, the test has not yet been validated against an independent measure of intelligence, nor has it been standardised. This study presents data on the validation and standardisation in a healthy British sample of older persons and compares prediction of verbal intelligence from the CCRT to predictions combining demographic variables and using demographic variables alone. The additional ten easy words of the NART have also been set within context. The CCRT was satisfactorily correlated with WAIS-R Verbal IQ and the Mill Hill Vocabulary Test (r=0.78 and r=0.87 respectively). Whereas the regression equation predicting WAIS-R VIQ using CCRT alone accounted for 61% of the variance, the variance accounted for increased to 68% when demographic variables were included. Demographic variables alone including years of full-time education accounted for 50% of the variance, but, when social class, age and sex were used alone, only 37% of the variance was accounted for. Tables for converting CCRT scores to WAIS-R VIQ are presented for use with people aged over 70 with dementia. Performance on CCRT was also highlysignificantly correlated with performance on two tests of verbal fluency and two tests of verbal episodic memory. Regression equations were built to estimate performance on these tests and tables for converting CCRT scores to predicted performance on these tests are presented
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Psychology