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This paper aims to examine the relationship between four leadership approaches (i.e. transactional leadership, transformational leadership, entrepreneurial leadership and authentic leadership) and organizational citizenship behaviour from the Islamic perspective (OCBIP) in the central offices of private banks in Tehran, Iran.

A correlative descriptive research method is used. Partial least squares modelling is applied to analyze the data from 384 employees and managers of the banks.

The results show that transactional leadership and transformational leadership positively and significantly affect OCBIP. However, entrepreneurial leadership and authentic leadership do not predict followers’ OCBIP. Also, transformational leadership has a greater power to influence on OCBIP than transactional leadership. The empirical findings also indicate that each of leadership behaviours influences certain types of OCBIPs so that transactional leadership predicts altruism, civic virtue and advocating high moral standards; transformational leadership predicts altruism, civic virtue and removal of harm; authentic leadership predicts advocating high moral standards, significantly; and entrepreneurial leadership predicts civic virtue, negatively.

OCBIP is a new construct that has been conceptualized, recently. In the past decades, many studies have examined the relationship between different leadership approaches and organizational citizenship behaviours (OCB) of followers. However, the relationship between leadership approaches and OCBIP has not yet been investigated. Furthermore, only a few studies have compared the influence of different leadership approaches on OCB and OCBIP. This paper contributes to the literature by identifying the distinct impact of the four leadership approaches on the different types of OCBIPs. Furthermore, examining the impact of some leadership approaches (e.g. entrepreneurial leadership) on OCBIP has remained unknown.

This study aims to examine the relative importance of the impact of central and peripheral route processing of online reviews (ORs) on the acceptance of paid mobile apps among consumers in a fully Islamic market. The authors used the elaboration likelihood model (ELM) and technology acceptance model (TAM) to explain how ORs influence users’ perception and purchase intention of paid mobile apps.

An online survey of 384 Iranian paid mobile app users was conducted to compare the role of overall product ranking, argument quality and information quantity on the perceived usefulness (PU) and perceived ease of use (PEU) of mobile apps and purchase intentions of paid mobile apps.

Results show that only overall product ranking and argument quality influence perceived PEU and PU of paid mobile apps. The quantity of reviews on the app store does not affect perception of the app. The path model supports the mediating role of PU and PEU on information processing and attitude toward the app and purchase intention.

To Islamic markets such as Iran, this study shows that paid mobile app marketers need to monitor closely the reviews in the app stores and make prompt response to negative reviews even if there are only a few reviews because users did not pay attention to the quantity of reviews. The overall ranking and argument quality strongly affect perception and purchase intention of paid apps.

To the best of the authors’ knowledge, this is the first study that combines ELM and TAM in determining the relative importance of central and peripheral processing of information in online product reviews, specifically for paid mobile apps in app stores in a large Islamic market.