“…Notably, research indicates that negative affect, in particular, wanes with age (e.g., Charles et al, 2015; Charles, Reynolds, & Gatz, 2001)—although emerging evidence suggests that certain discrete negative emotions (e.g., sadness) may defy this trend (e.g., Kunzmann, Kappes, & Wrosch, 2014; Kunzmann, Richter, & Schmukle, 2013). Evidence is far more mixed with respect to developmental changes in positive affect and life satisfaction.…”