ERIC Number: ED345782
Record Type: RIE
Publication Date: 1992-Feb
Reference Count: N/A
Implementation and Initial Validation of the MDTP Tests at Golden West College.
In 1992, a study was conducted at Golden West College (California) to determine the predictive validity of the Math Diagnostic Testing Project (MDTP) tests. A total of 1,137 students were tested in-class; 601 took the Algebra Readiness test, 376 took the Elementary Algebra test, and 160 took the Intermediate Algebra test. Two correlation coefficients indicating predictive validity were computed for each course (in the first correlation withdrawals were converted to failing grades, and in the the second withdrawals were deleted from the analysis). Only minor differences existed between the validity coefficients computed with the two approaches. The median predictive validity value across all levels was .37, which exceeded the standard established by the California community colleges. The utility of the test scores as predictors of student performance was also supported. A subsequent goal of the study was to determine how best to use the tests for making placement recommendations by identifying cutscores. The primary method for establishing cutscores involved comparing success rates for contrasting groups over a range of scores. The recommended cutscores were able to discriminate with a degree of confidence between students in the sample who were ultimately successful or unsuccessful. Data regarding factors that might also serve as predictors of success in mathematics courses, such as the reported grade earned in the student's last math course and the grade expected in the current course, were gathered by a questionnaire. As independent predictors, evidence indicated that these two indicators would serve approximately as well as would objective test scores. Attachments provide the initial student survey and a discussion of the adoption of revised placement rules. (JMC)
Descriptors: College Mathematics, Community Colleges, Correlation, Cutting Scores, Grades (Scholastic), Mathematics Tests, Predictive Measurement, Predictive Validity, Predictor Variables, Questionnaires, Student Evaluation, Student Placement, Tables (Data), Test Results, Test Use, Test Validity, Two Year Colleges
Publication Type: Reports - Research; Numerical/Quantitative Data
Education Level: N/A
Authoring Institution: Golden West Coll., Huntington Beach, CA.
Identifiers: Mathematics Diagnostic Testing Project CA