The Attitudes toward Mathematics Inventory (ATMI) was developed to measure students' attitudes toward mathematics. The ATMI was initially produced using samples of high school students at a private high school, and the initial pool of items was submitted to exploratory factor analysis. Four factors were identified: self-confidence, value, enjoyment, and motivation. Because the ATMI was developed with high school students, this study was undertaken to see if the four factors would hold with a college population. The ATMI was also derived used a predominantly Hispanic population, raising the question of whether there might be a different factor structure for a different sample. Responses of 134 college students to the ATMI were analyzed. Confirmatory factor analysis was used to determine whether the four-factor model would hold, and results indicate that the four-factor model does hold for U.S. college student. (Contains 2 tables and 18 references.) (Author/SLD)