The effects of imagerial and anatomical/imagerial approaches to resonance training and choral experience on high school students\u27 vocal tone quality

The purpose of this study was to examine the effects of two pedagogical approaches to resonance (imagerial and anatomical/imagerial) and choral experience on the tone quality of male and female high school students. The subjects were members of Nebraska Class B and C high school choral programs. Each treatment group received six lessons focusing on resonance. Experimental group one used an imagerial approach, and experimental group two used an anatomical/imagerial approach. A third group of subjects received no treatment and served as the control group. A panel of experts evaluated the subjects\u27 pre- and post-treatment vocal tone quality. The effects of the independent variables, teaching method and choral experience, on the dependent variable, tone quality, were assessed using a two-way analysis of covariance (p = $\u3c$.05) with pre-treatment tone quality ratings serving as the covariate. Results indicated no significant difference among treatments, but did indicate a significant interaction between grade and group. Juniors treated via anatomy/imagery scored significantly higher than other subjects