Despite the heterogeneity in intervention components and outcome variables , there were generally few significant associations between amount of meditation practice and its outcomes .
Interventions using the " Four  Immeasurables Meditations " ( FIM ) are effective for various outcomes ; however , whether increased meditation practice in these interventions leads to better results has not been well investigated .
Open hearts build lives: positive emotions, induced through loving-kindness meditation, build consequential personal resources.
B. L. Fredrickson 's ( 1998 , 2001 ) broaden- and -build theory of positive emotions asserts that people 's daily experiences of positive emotions compound over time to build a variety of consequential personal re sources . The authors tested this build hypothesis in a field experiment with working adults ( n = 139 ) , half of whom were r and omly-assigned to begin a practice of loving-kindness meditation .  Results showed that this meditation practice produced increases over time in daily experiences of positive emotions , which , in turn , produced increases in a wide range of personal re sources ( e.g. , increased mindfulness , purpose in life , social support , decreased illness symptoms ) . In turn , these increments in personal re sources predicted increased life satisfaction and reduced depressive symptoms . Discussion centers on how positive emotions are the mechanism of change for the type of mind-training practice studied here and how loving-kindness meditation is an intervention strategy that produces positive emotions in a way that outpaces the hedonic treadmill effect
Despite the heterogeneity in intervention components and outcome variables , there were generally few significant associations between amount of meditation practice and its outcomes .
Interventions using the " Four  Immeasurables Meditations " ( FIM ) are effective for various outcomes ; however , whether increased meditation practice in these interventions leads to better results has not been well investigated .