Single Letter Cancellation Test (SLCT)

Single Letter Cancellation Test (SLCT) Evaluation Summary

What does the tool measure? Unilateral Spatial Neglect (USN) in the near 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 None.
Other Languages The SLCT has been used with English and French-speak patients. A Hebrew version of the SLCT has been used in some studies as part of the Behavioral Inattention Test.
Measurement Properties
Reliability – No studies have examined the test-retest reliability test-retest.
Validity Construct: Adequate correlation with mean CT-scan damage; adequate to excellent correlations with Albert’s Test , Sentence Reading Test, and the Wundt-Jastrow Area Illusion Test; significant correlation with the Semi-Structured Scale for the Functional Evaluation of Hemi-inattention .
Does the tool detect change in patients? Not applicable.
Acceptability The SLCT should be used as a screening tool rather than for clinical diagnosis of USN. 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 and recognize letters of the alphabet to complete. The SLCT cannot be used to differentiate between sensory neglect and motor neglect.
Feasibility The SLCT requires no specialized training to administer and only minimal equipment is required (a pencil, a stopwatch, and the test paper). The test is simple to score and interpret. A suggested cutoff score for the presence of USN is provided (omissions of 4 or more). The test is placed at the patient’s midline and the time it takes for the patient to complete the test is recorded.
How to obtain the tool? Please click here to see a copy of the SLCT.