Encyclopedia of Clinical Neuropsychology

Living Edition
| Editors: Jeffrey Kreutzer, John DeLuca, Bruce Caplan

Judgment of Line Orientation

Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-56782-2_1376-2



The Judgment of Line Orientation (JLO) test is a widely used measure of visuospatial judgment that was originally conceptualized by Dr. Arthur L. Benton et al. in 1978 (Benton et al. 1978). This test measures accuracy of angular orientation based on judgments about a pair of angled lines that visually match an identical pair immersed within a semicircular array of 11 lines. Patients are asked to indicate which two lines from the array on the bottom page of the spiral-bound stimulus book are in exactly the same position and point in the same direction as the two lines on the top page. Feedback is provided during five practice trials prior to initiating test items. Compared to the practice trials, lines in the test items have part of the line erased to increase task difficulty. A response is scored as being correct only when both lines are identified correctly. There is no time limit for responding; however, after 30 s the patient is typically...

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References and Readings

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Psychology DepartmentWest Chester University of PennsylvaniaWest ChesterUSA
  2. 2.Immaculata UniversityImmaculataUSA