Discussion and conclusion
Research has sought to predict PECB by different variables that are classified into intrapersonal/psychic factors and contextual/situational factors (Ertz et al., 2016). The behavioral predictive powers of most intra-psychic variables are still sketchy (Kalamas et al., 2014). Consequently, some research has simultaneously considered different sets of intra-psychic and contextual variables and examined their interactive effects on environmental behaviors (Grimmer et al., 2016; Steg and Vlek, 2009). Our study extends prior research on PECB by examining the salient intra-personal factors and their interactions with religiosity as predictors of PECB in a developing country setting that is predominantly Islamic in its socio-cultural orientation. We also extend prior research on the antecedents-PECB relationships based on causal-explanatory statistical techniques by using the neural network that has a better predictive power.
Our results show that all intra-personal factors and their interactions with religiosity are relevant predictors of PECB. The key finding is that in Islamic countries the degree of religiosity is a key moderating variable in determining PECB. However, the order of importance of these predictors varies according to the results of neural network analysis. Specifically, the most important predictor of PECB is environmental attitude*religiosity, which supports the theory that attitude is the most immediate and important determinant of the behavior (Fishbein and Ajzen, 1974) and environmental attitude’s influence can be augmented by the extent of the religiosity possessed by consumers. Further, this result is consistent with several prior studies that found the environmental attitude to be a strong predictor of pro-environmental behaviors (Tanner and Wolfing, 2003). The finding related to the moderating role of the religiosity is consistent with Felix and Braunsberger’s (2016) finding that the religiosity moderated the environmental attitude-PECB linkage among a sample of Catholics in Mexico.