A new method for the examination of language in aphasics: internal and external reliability coefficients.

Abstract

A new method is presented to test language, worked out by one of the authors (R.R.L.). Briefly, it consists of the systematic and ordered exploration of the functions from the cortical sensory and motor areas, the interchange of the sensorial information from the sensory to the motor areas. Nine patients with different aphasic syndromes were examined independently from each other. The test was divided in two ranks; the sensory interchange and the motor-oral-manual. The Spearman Correlation Coefficient and its statistical meaning was calculated for each rank. For the internal reliability tests, the results achieved by two successive examination on the same patient were compared by the same explorer. For the external reliability, the results from two sucessive tests on the same patient were compared by two different explorers. The Spearman Correlation Coefficient rate in all the cases varied between 1 and 0.88 with a probability of more than 0.0005 and high statistical significance, with exception of the motor rank of case 4, where it was 0.87 with a probability of more than 0.005 and less than 0.0005 with still some statistical meaning.