7. Limitations of the Study and Suggested Future Research
The following three limitations may affect the generalization of results. However, these limitations may also provide fruitful areas for future research. First, more research is needed to understand the antecedents of continuance commitment in the Egyptian banking context, since the R2 of continuance commitment is considered weak (0.041) indicating that internal branding, which is supposed to result in “education and organisational-specific knowledge and skills” (Meyer et al., 2002), explains only 4% of continuance commitment. Second, the sampling frame of frontline employees working in retail divisions of banks could not be accessed; consequently snowball sampling was used to select the sampling units. The present study can be replicated in other service organisations, where sampling frames can be accessed and probability sampling techniques can be employed. Third, the current research was conducted in branches of banks operating in three large Egyptian cities (Cairo, Giza and Alexandria). Therefore, the model of the present research can be reincorporated to be conducted in other high contact service industries (such as insurance companies, telecommunications and airline companies) and in other cities and countries. Furthermore, this research extends the literature of the mediating effects of role clarity, affective commitment, and continuance commitment. Multiple parallel mediation analysis was used as it concentrates on analyzing the effects of multiple mediators without taking their inbetween relationships. Thus, future studies may examine the series of multiple mediation of the causal effect of these mediators (e.g. role clarity on affective commitment) (Mukherjee and Malhotra, 2006) on the relationship between internal branding, in-role and extra-role brand behaviour.