Extended Household Waste Separation Model (HWSM) within the scope of moral norms, environmental values and facilitating conditions

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Arı E., Yılmaz V.

Gazi İktisat ve İşletme Dergisi, vol.8, no.3, pp.469-487, 2022 (Peer-Reviewed Journal) identifier


In this study, attitudes and behaviors towards the separation of

household waste were investigated with the help of a model proposed

within the scope of moral norm, environmental benefit, facilitating

conditions, existing infrastructure adequacy added to the Theory of

Planned Behavior (TPB). In the proposed Extended Household Waste

Separation Model (HWSM), the exogenous latent variable of moral

norm is designed as an estimator of the variables of attitude, subjective

norm and perceived behavior, control which are the antecedents of the

TPB model. In the model, the environmental benefit of waste

separation, conditions that facilitate waste separation, and existing

infrastructure adequacy are included as predictors of behavior towards

waste separation. The sample consisted of 350 units and the data were

collected through an online questionnaire. It was determined that

40.7% of the participants in the sample resided in Eskişehir, 8.7% in

Istanbul, 8.2% in Bursa, 7.4% in Antalya, 6.5% in Ankara and 5.6% in

Izmir. The fit of the proposed model and the hypothesis testing of the

structural relationships were performed using partial least squares

structural equation modeling (PLS-SEM). As a result of the path

analysis, the effect of only environmental benefit on behavior was not

found to be significant and it was determined that only one of the 13

hypotheses was not supported. When the PLS-SEM compliance

criteria related to the suitability of the proposed HWSM were

examined, it was evaluated that the model was compatible. One of the

remarkable results of the study is that the direct effect of

environmental benefit on waste behavior is not significant, but the

relationship is determined as positive and significant thanks to the full

mediation of the intention variable. In addition, perceived behavioral

control appeared to play a moderator role in the relationship between

moral norm and waste sorting behavior. In addition, it was determined

that a one-unit increase in facilitating conditions and existing

infrastructure adequacy would cause an increase of 0.328 and 0.234

units, respectively, in household waste separation behavior.