Disentangling trait and daily experiences of uncertainty and meaning in life: implications for daily anxiety, negative affect, and somatic symptoms.

Although there is growing evidence supporting the association between intolerance of uncertainty (IU) and psychopathology, little is known about the covariation of IU and psychological distress day-to-day. The purpose of this ecological momentary assessment (EMA) study was to examine negative emotional and somatic correlates of trait IU and daily uncertainty, while investigating how a source of stability, meaning in life (MIL), might buffer against deleterious effects of IU and uncertainty. Adult community members (n = 62) from a mid-size town in the Rocky Mountain region completed baseline measures of IU and MIL and ecological momentary assessments (EMA) of meaning, uncertainty, affect, and somatic symptoms over the course of one week. Results indicate individuals high in trait IU experience more uncertainty day-to-day and greater distress when they feel uncertain compared to individuals lower in trait IU; however, MIL plays a stronger protective role for high IU compared to low IU individuals. These findings support and extend previous research showing IU is associated with psychological distress and that MIL may be a critical resource to cultivate. Interventions promoting meaning day-to-day may reduce the effects of uncertainty on the well-being of those highly intolerant of uncertainty. [ABSTRACT FROM AUTHOR]