Considerable research (e.g., Brown, 2015; Quaglia et al., 2016) shows that mindfulness, a receptive attention to present events and experiences (Analayo, 2003; Brown & Ryan, 2003), is phenotypically correlated to subjective well-being (SWB), commonly regarded as higher life satisfaction along with a preponderence of positive over negative affect (Diener, 1984; 2000). Unknown is why the relation between these two dispositions exists. Intrapsychic phenomena have been invoked to explain their relation (e.g., Brown et al., 2007;...