“…The effects of the public-goods message in the second post-treatment year, however, were close to zero (0.4%) and statistically insignificant (p-value=0.906). The evidence on the effects of moral messages is mixed, and they appear to work in some contexts (Bott et al, 2020;Nathan et al, 2020;Hallsworth et al, 2017) but not others (Blumenthal et al, 2001;Fellner et al, 2013;Castro and Scartascini, 2015;Dwenger et al, 2016;Meiselman, 2018;Perez-Truglia and Troiano, 2018). A closely 44 The results from panels (b) and (c) in Table 2 are based on a regression specification equivalent to the one from equation (1) above, which was used to obtain the estimates in panel (a).…”