Box and Block Test (BBT) Evaluation Summary
|What does the tool measure?||Unilateral gross manual dexterity.|
|What types of clients can the tool be used for?||The BBT can be used with, but is not limited to clients with stroke.|
|Is this a screening or assessment tool?||Assessment|
|Time to administer||From 2 to 5 minutes.|
|Versions||There are no alternative versions.|
|Other Languages||There are no official translations.|
|Reliability||– No studies have examined the internal consistency of the BBT.
– Two studies have examined the test-retest reliability of the BBT. Both reported excellent test-retest reliability using ICC’s.
– Two studies have examined the inter-rater reliability of the BBT and reported excellent inter-rater reliability using correlation coefficients and ICC.
– One study used Pearson correlation and the other, ICC and Spearman rho correlation.
|Floor/Ceiling Effects||No studies have examined floor/ceiling effects of the BBT|
|Sensitivity/ Specificity||No studies have examined sensitivity/specificity of the BBT|
|Does the tool detect change in patients?||Two studies have examined the responsiveness of the BBT and reported that the BBT has moderate to large Standardized Response Mean, therefore, is able to detect change in clients with stroke.|
|Acceptability||The BBT should not be used clients with severe upper extremity impairment and severe cognitive impairments.|
|Feasibility||The administration of the BBT is quick and simple, however requires standardized equipment.|
|How to obtain the tool?||The BBT instructions can be obtained in the study by Mathiowetz et al. (1985)
Standardized equipment can be obtained at the website: