Researchers and psychometricians have long used Cronbach’s α as a measure of reliability. However, there have been growing calls to replace Cronbach’s α with measures that have more defensible assumptions. One of the most common and straightforward recommended reliability estimates is ω. After a review of reliability and its estimation in Stata, I introduce the community-contributed command omegacoef. This command reports McDonald’s ω in a format similar to the base alpha command. omegacoef provides Stata users the ability to easily compute estimates of reliability with the confidence that the necessary statistical assumptions are met.
The purpose of this study was to examine which Ohio schools offered curricular music courses and the rates at which students participated in those courses. The analysis involved descriptive statistics, analysis of variance, logistic regression, and partially nested multilevel modeling using data from the Ohio Department of Education ( N = 3,222 schools). The investigation revealed that charter schools offered music courses far less often than public schools. However, in charter schools that did offer music, students participated at higher rates than those in public schools. Nearly all public schools featured music classes. The exception was high schools in the highest poverty urban neighborhoods, 31% of which had no curricular music. Students identified as Black, Hispanic, or indigenous were more likely to attend schools without music programs. Elementary students enrolled in an average of 1.00 music classes per year, whereas middle and high school students enrolled in 0.67 and 0.35 music classes per year, respectively. Suburban districts saw the greatest decline in music participation as students progressed to high school. Urban schools with greater percentages of white, non-Hispanic students had higher music enrollment rates.
The purpose of this study was to examine the association between curricular high school music participation, academic achievement, and social-emotional learning. The analysis involved a “doubly robust” approach combining propensity score weighting and nested multiple regression using data from the nationally representative High School Longitudinal Study of 2009. Results of the study were mixed. Preliminary tests revealed many significant differences between the choral and instrumental students and the control group, but the propensity score weighting moderated almost all of these effects to nonsignificance. The only unambiguously positive finding was that instrumental music students had higher reading scores than comparable students who did not enroll in music. Yet, subpopulation effects emerged for certain categories of music students based on factors such as race, sex, and prior school achievement. Although the lack of widespread main effects in this study coheres with prior research, the results for certain subpopulations suggest intriguing future directions for research on potential extramusical benefits of music education.
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