The effects of instruction on the singing ability of children ages 5 to 11: A meta-analysis

The purpose of the meta-analysis was to address the varied results within the area of singing ability research by statistically summarizing the data of related studies. Across 34 studies, analyses yielded an overall mean effect size for instruction of g = 0.43. Studies were limited to pretest-posttest or posttest-only quasi-experimental designs. The largest overall study effect size across categorical variables included the effects of same and different discrimination techniques on mean singing score gains. Overall mean effects by primary moderator variable ranged from trivial to moderate. Feedback yielded the largest effect regarding teaching condition, 8-year-old children yielded the largest effect regarding age, the Boardman assessment measure yielded the largest effect regarding measurement instrument, and song accuracy yielded the largest effect regarding measured task. Regarding gender, boys and girls improved similarly from singing interventions across studies. Implications for singing instruction pertain to the importance of intervention, especially between the ages of 5 and 8. Results from the meta-analysis have highlighted a tendency for singing interventions to improve singing ability more than traditional song-singing and more than no music instruction at all. Results from the meta-analysis have also highlighted the importance of self, teacher, and computer feedback in the development of singing.

Effects of a Computer Feedback Treatment and Behavioral Support Protocol on Drop out from a Newly Initiated Exercise Program

Drop out from newly initiated exercise regimens is problematic. Three treatments intended to support new exercise programs (standard exercise counseling, computer feedback, and behavioral support) were tested to estimate their association with drop out over the initial 3 and 6 mo. Data from a total of 1,336 adults (44% men; Mage = 41.9 yrs., SD = 9.8) initiating exercise programs at 18 community exercise facilities (six in each of the three treatment groups) were aggregated by facility on a measure of drop out and were then contrasted both within and between groups. After a mixed model repeated-measures analysis of variance was significant overall, planned contrasts were conducted using the Tukey-Kramer test. Significantly less drop out was found at Month 3 for both the computer support (27%) and behavioral support (17%) groups, when contrasted with the standard exercise counseling group (38%). Behavioral support had significantly less drop out than computer feedback at Month 3. The behavioral support group showed significantly less drop out at Month 6 (33%) when contrasted with both the standard exercise counseling (58%) and computer feedback (52%) groups, which did not significantly differ from one another. Limitations and the need to evaluate and extend research on interventions for reducing drop out from exercise programs were discussed.