UNCTASSIFTF.n SECURITY CLASSIFICATION OF THIS F-AOK(Wfc«w P*a Bmtf4) measures were factor analyzed, three significant factors were extracted-which appeared to reflect measures of technical aptitude, verbal ability, and problem-solving mode. These factors accounted for much of the variability among the various measures of cognitive characteristics. Thus, it was concluded that cognitive styles are relatively independent of abilities and aptitudes. UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAOE(1Pfc«n Datm Mntmml) FOREWORD This research was performed under Advanced Development Project Zl 175; subproject PN.05; Improved Effectiveness in Course Design, Delivery, and Evaluation, and the sponsorship of the Deputy Chief of Naval Operations (Manpower, Personnel, and Training). The goal of this subproject is to design and evaluate procedures for facilitating the instructional systems development (ISD) process. This is the fourth in a series of reports prepared under this subproject. The first (NPRDC TR 79-1) identified measures of student characteristics that may be used to develop individualized instructional procedures; the second (NPRDC TR 79-21), student characteristics that best differentiate failures and graduates of the Basic Electricity and Electronics (BE/E) School; and the third (NPRDC TR 79-30), those characteristics that are predictive of student performance in BE/E School. The purpose of this study was to determine the magnitude and nature of the relationships among selected measures of cognitive styles, abilities, and aptitudes. There is some dispute as to whether cognitive styles can be separated or differentiated from abilities and aptitudes. An important question that must be answered for the ISD process is whether these measures provide complementary or redundant information regarding students' attributes.