<prompt> Specificity of a screening test measures aEURTrue positivesFalse positivesFalse negativesTrue negatives  <response>: True negatives Repeat from May 06 Sensitivity is the ability of test to identify correctly all those who have the disease, i.e, true positives. Specificity is the ability of a test to identify correctly those who do not have the disease, i.e. true negatives. 