Line Bisection Test

Line Bisection Test Evaluation Summary

What does the tool measure? Unilateral Spatial Neglect (USN) in the extrapersonal space
What types of clients can the tool be used for? Patients with stroke
Is this a screening or assessment tool? Screening
Time to administer Less than 5 minutes.
Versions There are many versions of the Line Bisection Test, and the procedures are rarely standardized, with the exception of when the Line Bisection Test is used as an item within a standardized test battery such as in the Behavioural Inattention Test.
Other Languages Not applicable.
Measurement Properties
Reliability – No studies have examined the internal consistency of the Line Bisection Test.
– Four studies have examined the test-retest reliability test-retest.
Validity Construct: Convergent. Excellent correlations with Albert’s Test and the Baking Tray Task. Adequate correlations with the Star Cancellation Test and with mean CT-scan damage. Poor correlation with the Clock Drawing Test.
Criterion: One study reported that when the Line Bisection Test was compared to other cancellation tests, the sensitivity of the test for detecting visuo-spatial neglect in elderly patients with stroke was 76.4%.
Does the tool detect change in patients? Not applicable.
Acceptability The Line Bisection Test should be used as a screening tool rather than for clinical diagnosis of USN. Performance on the Line Bisection Test may be influenced by or may be indicative of other syndromes besides spatial neglect, such as hemianopia. Apraxia must be ruled out as this may affect the validity of test results. This test cannot be completed by proxy. Patients must be able to hold a pencil to complete.
Feasibility The Line Bisection Test takes only 5 minutes to complete and is simple to score. Only simple equipment is required (a pencil and paper with 18 horizontal lines).
How to obtain the tool? The Line Bisection Test can be purchased as part of the Behavioural Inattention Test from Pearson Assessment by clicking on the following link: