Also reported in Table 2 are the effect size estimates, or R-squared values, and the DR2. These
calculations reveal the size of the association between challenge and positive affect as well as day
and positive affect were generally small (Cohen, 1988; Raudenbush & Xiao-Feng, 2001). Finally,
the results of chi-square tests to determine whether the strength of the within-subjects associations
varied across participants proved non-significant in all cases with positive affect as the dependent
variable