“…Research has substantiated this assumption (for reviews, see Anderson et al, 2014;Piliavin & Siegl, 2015;Wilson, 2012), particularly for older volunteers in organizations that provide a supportive environment (Musick & Wilson, 2003;Van Willigen, 2000; but see Bjälkebring et al, 2021). Among other things, improvements in internal control beliefs and social relationships have been discussed as likely pathways from volunteering to a higher SWB (Brown et al, 2012;Fried et al, 2004;Krause et al, 1992;Mellor et al, 2008;Müller et al, 2014;Musick & Wilson, 2003;Pilkington et al, 2012). However, empirical tests of these pathways in a longitudinal framework are scarce and have not addressed moderating factors, such as age (for an exception, see Müller et al, 2014) or type of volunteering.…”