National longitudinal evidence for growth in subjective well-being from spiritual beliefs

Previous research finds an association between spirituality and subjective well-being. However, the widespread use of poorly defined concepts of spirituality, tautological spirituality scales, and heavy reliance on cross-sectional samples cast doubts on prior findings. Here, we leverage ten waves of panel data from a nationally diverse longitudinal study to systematically test whether having spiritual beliefs leads to growth in personal well-being and life satisfaction (N = 3257, New Zealand, 2010-2020). Contrary to previous research, we find that belief in a spirit or life force predicts lower personal well-being and life satisfaction. However, in support of previous speculation, belief (relative to disbelief) in a spirit or life force predicts increasing personal well-being and life satisfaction over time. These findings are robust even while accounting for known demographic influences; they even hold among those who believe in a God but disbelieve in a spirit or life force. The recent growth in spiritual beliefs and decline in traditional religion across many industrial societies motivates further causal investigations of the mechanisms by which spiritual beliefs lead to growth in subjective well-being.