Clinical Issues: EBP Tutorial #10: EBP Metrics for Assessment Although the traditional psychometrics (validity, reliability, and norms) described in the previous tutorial (Hargrove, 2005) provide important information about tests, they offer little insight into how good a specific test is at distinguishing people with a disorder from those that do not have the disorder. Moreover, as Riegelman (2000)  has ... Tutorial
Tutorial  |   March 01, 2006
Clinical Issues: EBP Tutorial #10: EBP Metrics for Assessment
Author Affiliations & Notes
  • Patricia Hargrove
    Department of Speech, Hearing, and Rehabilitation Services, Minnesota State University, Mankato, MN
Article Information
Research Issues, Methods & Evidence-Based Practice / Clinical Issues
Tutorial   |   March 01, 2006
Clinical Issues: EBP Tutorial #10: EBP Metrics for Assessment
SIG 1 Perspectives on Language Learning and Education, March 2006, Vol. 13, 23-24. doi:10.1044/lle13.1.23
SIG 1 Perspectives on Language Learning and Education, March 2006, Vol. 13, 23-24. doi:10.1044/lle13.1.23
Although the traditional psychometrics (validity, reliability, and norms) described in the previous tutorial (Hargrove, 2005) provide important information about tests, they offer little insight into how good a specific test is at distinguishing people with a disorder from those that do not have the disorder. Moreover, as Riegelman (2000)  has noted, an extremely low score on a standardized test does not ensure that the client has a problem, and a score within normal limits on a standardized test does not ensure that the client has no problems. To determine the clinical usefulness of a test, clinicians need to consider two factors: measures that quantify its clinical utility (EBP metrics) and the quality of the research from which the EBP metrics are derived. This tutorial will describe some EBP metrics (sensitivity/specificity, positive and negative likelihood ratio, positive and negative predictive value) associated with assessment; the next tutorial will address the critiquing of research supporting EBP metrics.
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