Question: Measuring effect size for observations made over time. In a study investigating how consumption of water during a meal influenced food intake, Andrade, Kresge, Teixeira, Baptista, and Melanson (2012) used a within-subjects ANOVA to analyze changes in meal consumption over the course of a meal. To identify their analysis, they explained that "significant results [for the ANOVA] are reported, and the effect size is reported as partial eta-squared (TJ 2)" (Andrade et al. , 2012, p. 3). Explain why a partial etasquared is an appropriate estimate of effect size for this study.