A prototype model of TASK-based language assessment, the Integrative TASK (IT) Model, was developed in this research project as..an attempt to solve the longstanding problem of grading and generalizing language learners' performances on particular language TASKs to their future performances on the TASKs at similar difficulty levels. In the IT Model, two psychometric and information-processing theories contributed which were operationally defined as the two-factor constructs underlying individual Integrative TASKs: first, the core operations identified in the eight categories of Multiple Intelligences (M!) Theory (Gardner, 1983; 1985), and second, the behavioral objectives elaborated in the six hierarchical levels of Cognitive Domain identified in the Taxonomy of Educational Objectives (Bloom, 1965). In this paper, as one of the researchers' main concerns, the appropriateness of the interpretations made on the participants' Integrative TASK performances is discussed in terms of exploratory factor analysis and two-factor Analysis of Variances (ANOVA) as two measures of construct validity.