The purpose of the study is to determine if there is an effect on intervention/nonintervention attitudes associated with an introductory microeconomics class. The population consisted of all students enrolled in eighteen sections of Economics 1100 during the Fall semester, 1984, at North Texs State University. There were seven sections of Economics 1100, ten sections of Sociology 1510, and ten sections of Political Science 2010 used as control groups. The instruments used for pretesting and posttesting were the twenty-three item Attitude Scale and Demographic Questionnaire. The Attitude Scale contained twelve intervention and eleven nonintervention questions. Intervention questions were reverse scored so that a high score is noninterventionist and a low score is interventionist. Data were analyzed using a multiple linear regression to determine how each variable affected the intervention/nonintervention student attitudes.

It was the purpose of this research, to develop and test an artificially intelligent, learner-based, computer-assisted physics tutor. The resulting expert system is named ARPHY, an acronym for ARtificially intelligent PHYsics tutor. The research was conducted in two phases. In the first phase of the research, the system was constructed using Ausubel's advance organizer as a guiding learning theory. The content of accelerated motion was encoded into this organizer after sub-classification according to the learning types identified by Gagnds. The measurement of the student's level of learning was accomplished through the development of questioning strategies based upon Bloom's taxonomy of educational objectives. The second phase of this research consisted of the testing of ARPHY. Volunteers from four levels of first-semester physics classes at North Texas State University were instructed that their goal was to solve three complex physics problems related to accelerated motion. The only students initially instructed by ARPHY were from the class of physics majors. When the threshold values of the pedagogical parameters stabilized, indicating the fact that ARPHY's instructional technique had adapted to the class' learning style, students from other classes were tutored. Nine of the ten students correctly solved the three problems after being tutored for …