We often receive queries about the relation between Lectical Levels the Strata defined by Jaques. The following table shows the relation between Lectical Levels and Strata as they were defined by Jaques in Requisite Organization. These relations were determined by using the Lectical Assessment System to score Jaques’ definitions. We have not yet had an opportunity to compare the results of scoring the same material with the Lectical Assessment System and any scoring system based on Jaques’ definitions as we have done with other comparisons of scoring systems. Our interpretation of Jaques’ Strata definitions may differ from the interpretations of other researchers, leading to differences between theoretical and actual comparisons.
Jaques, E. (1996). Requisite organization (2 ed.). Arlington, VA: Cason Hall.