A factor analysis of aptitude and proficiency measures in radiotelegraphy.

"Fourteen auditory and printed aptitude measures were administered to students prior to entry into training for radiotelegraphy. These 14 measures, together with a criterion of proficiency in learning to receive Morse Code, were subjected to factor analysis study. Five factors were identified as Visualization, Verbal Knowledge, Speed of Closure, Auditory Rhythm Perception, and Auditory Perceptual Speed. Three of these, Auditory Rhythm Perception, Auditory Perceptual Speed, and Speed of Closure, were found to contribute to the criterion of subsequent code proficiency." (PsycINFO Database Record (c) 2010 APA, all rights reserved)