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Rivermead Behavioural Memory Test - Third Edition (RBMT-3) - Technical Information

Sample Characteristics

The core standardisation sample consisted of 333 people (172 females, 161 males) ranging in age from 16 to 89, with a mean age of 44.3 years (SD = 18.17). The extent to which the standardisation sample matched the general adult population was examined using data from the UK 2001 census. Chi-square goodness-of-fit tests revealed that the actual sample distribution of age, education, gender and ethnicity did not differ significantly from the expected census figures.

In addition to the core standardisation sample, a mixed clinical sample of participants with cerebral pathology was recruited (n=75). All clinical participants completed both versions of the RBMT-3. In order to examine possible score differences on the RBMT-3 for different types of clinical disorder, this sample contained participants from each of the following clinical categories:
• Traumatic Brain Injury
• Stroke
• Encephalitis
• Progressive conditions such as Alzheimer’s Disease

Generating norms for the RBMT-3

Raw scores on the 14 RBMT-3 subtests are converted subtest scaled scores with a mean of 10 and a standard deviation of 3. Percentile ranks for scaled scores are also provided. Subtests take into account an individual’s age and data is reported for the following age bands:

16-24 years of age
25-34 years of age
35-44 years of age
45-54 years of age
55-64 years of age
65-74 years of age
75-89 years of age

In addition to providing scaled scores for the RBMT-3 subtests, a General Memory Index (GMI), representing overall memory performance, was also created. This index is standardised to have a mean of 100 and a standard deviation of 15. GMI scores are calculated by summing the scaled scores on the RBMT-3 subtests and then converting this sum to a GMI using the appropriate conversion table. These conversion tables also report the confidence intervals and percentile ranks for each GMI.

Alternate form reliability for each subtest was measured for Version 1 and Version 2 of the sample with the normative and clinical sample combined. Reliability coefficients ranged from 0.57 to 0.86. The reliability coefficient of the GMI was 0.87 for both Versions 1 and 2.

With the exception of the Messages Delayed subtest the inter-scorer reliability for the RBMT-3 subtests were 0.9 or higher, indicating a high level of agreement between scorers. The lower level of agreement on the Messages Delayed subtest was attributable to only two of the 18 pairs who completed the inter-scorer study and is thought to be due to two examinees whose results were particularly difficult to score on this subtest.

The RBMT-3 demonstrated good construct and ecological validity (as supported by performance against the Prospective and Retrospective Memory Questionnaire; Smith et al., 2000). In assessing the clinical validity of the tool the results provided strong evidence of the sensitivity of the RBMT-3 to memory problems.

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Key Information


Predict everyday memory problems in people with acquired, non-progressive brain injury and monitor change over time


Barbara A Wilson

Barbara A Wilson

Eve Greenfield

Linda Clare

Alan Baddeley

Janet Cockburn

Robyn Tate

Peter Watson

Linda Clare

Robyn Tate

Peter Watson

Sara Sopena

Alan Baddeley

Rory Nannery

John Crawford

Publication Year


Age Range



Individual - 30 minutes

Qualification Code


£451.50 (Complete kit price from)
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