Kindness is lesser preferable than happiness: investigating interest in different effects of the loving-kindness and compassion meditations.

The primary purpose of the Loving-kindness and Compassion Meditations (LKCM) in Buddhism was the cultivation of kindness, but many modern LKCM trainings focused on happiness, and even used the "kindness for happiness" strategy that advocate cultivation of kindness for the benefit of happiness. This study investigated whether cultivating kindness was lesser desired than enhancing happiness for potential trainees, and it impacts on LKCM training. Study 1 recruited 583 university students, study 2 involved 1075 participants from a 4-week online LKCM training. The measures included interest in meditation trainings that focused on emotional happiness, kind attitudes and other effects. Two studies cohesively supported kind attitudes were the least desired effects, and study 2 showed that higher interest in meditations on Subjective well-being predicted increases in personal happiness. In summary, this study provided first evidence that trainees' preference on potential effects of LKCM existed and linked with effects of training. It suggested the hedonic bias in modern positive psychology is facilitated by trainees, and encouraged further attention in the philosophical and ethical issues in the trainings. The intervention program has been retrospectively registered with the PRS on May 17, 2024, under registration number NCT06424951.