“…In experimental studies, researchers have observed condition differences in meaning in life ratings-even on broad trait measures of meaning in life-following an array of laboratory manipulations inducing qualities including social belonging (Lambert et al, 2013), nostalgia (Sedikides et al, 2018), or repeating patterns (Heintzelman et al, 2013). Furthermore, across daily diary studies including once daily meaning in life measures, there is consistent and substantial within-person variance in meaning in life, for example, daily diary studies have produced the following within-person variance estimates: 54% (Machell et al, 2015a), 44% (Ward et al, 2022), and31% (Jayawickreme et al, 2021).…”