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Coupled with the increasing concern toward sustainability and sustainable development issues, environmental innovation practices have been of burgeoning interest among both scholars and practitioners. Building on this, the main purpose of this study is to quantitatively aggregate the extant empirical research on eco‐innovation and firm performance and to assess the role of moderating factors in this theoretical relationship by pursuing a meta‐analytic approach. To serve this objective, 196 effects based upon 70 studies including more than 25,000 firms (N = 25,412) were meta‐analytically examined. Quantitative evidence drawn from the meta‐analysis indicates that organizational eco‐innovation exerts the strongest influence on firm performance. Moreover, the meta‐analytic findings suggest that significant variations in the correlation between eco‐innovation and firm performance exist across different performance types, and the magnitude of the eco‐innovation–firm performance association is stronger in developing compared with developed countries. This meta‐analytic review is expected to considerably contribute to the pertinent literature by means of improving the understanding of the relevance of eco‐innovation typology to firm performance.

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Purpose The purpose of this study is to test Islamic religiosity scale’s reliability and validity and to evaluate the impact of Islamic religiosity on materialism in Turkey. Design/methodology/approach Using a quantitative research method, a self-administered survey was distributed to the students of two faculties – Faculty of Theology and Faculty of Business – of the same university in Izmir, Turkey. In total, 400 questionnaires for each faculty were distributed and a total of 529 completed questionnaires – 326 from the Faculty of Theology and 203 from the Faculty of Business – were returned. Exploratory and confirmatory factor analyses were conducted via SPSS and AMOS. Findings Islamic religiosity and materialism have been found to be negatively correlated, supporting the existing literature. However, not all the dimensions of Islamic religiosity (behavioral religiosity, spiritual religiosity and necessity of religion) had this negative effect on materialism (possession-defined success, acquisition centrality and acquisition as the pursuit of happiness). Negative influence of “behavioral religiosity” on all three dimensions of materialism was observed. However, the “spirituality” dimension of religiosity was found to have a positive impact, while the “necessity of religion” had no significant impact on the dimensions of materialism. Research limitations/implications A sample consisting of undergraduate students might limit the generalizability of the findings to Turkish Islamic population in general. This study is one of the first attempts to test the Islamic religiosity scale which needs to be further analyzed and developed. Originality/value The present study will contribute to the literature by testing an Islamic religiosity scale developed by a Turkish researcher. Besides, this is the only study undertaken on the impact of Islamic religiosity on materialism using an Islamic religiosity scale.