a strong trendp = 0.053
However, exploratory planned contrasts revealed that among low-extraversion participants, MBI-CEW showed significantly greater gains in prosocial scores compared to MBI-CE (Δ = 8.58, 95% CI [1.91, 15.26], p = 0.014, g = 0.99) and a strong trend relative to Control (Δ = 6.17, 95% CI [−0.10, 12.45], p = 0.053, g = 0.90).