The correlation matrix of 14 tests and the time to reach four levels of Morse code proficiency was analyzed using structural equation methodology. This methodology was not available at the time of the original research, and is especially suited for the data in these studies. The method is based on the standard maximum-likelihood approach for parameter estimation and goodness of fit. Five factors were extracted from the correlation matrix of 14 tests. These factors were significantly correlated and differed only slightly from the factors obtained in the original factor analysis. The factors were auditory perceptual speed, auditory rhythm perception, speed of closure, visualization and verbal ability. The time to reach a level of proficiency on Morse code was significantly predicted by the time to reach the previous two proficiency levels.
|Original language||English (US)|
|Title of host publication||Proceedings of the Human Factors Society|
|Editors||Mary Jane Alluisi, Sybil de Groot, Earl A. Alluisi|
|Publisher||Human Factors Soc|
|Number of pages||5|
|State||Published - 1984|
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