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Conceptualization and Empirical Validation of Sustainability Touchpoint Experience (STE) Influencing Customer Trust and Dining Loyalty in Restaurants using higher order constructs in PLS-SEM

This study empirically validates a higher-order Sustainable Touchpoint Experience (STE) construct comprising food, people, planet, and governance dimensions, demonstrating through PLS-SEM analysis of 400 Eastern Indian restaurant customers that STE significantly enhances dining loyalty both directly and indirectly by fostering customer trust.

Original authors: Zakir Hossen Shaikh, Manjira Roy, Manas Ranjan Chowdhury, Sangeeta Mohanty, Namita Rani Mall

Published 2026-09-14
📖 5 min read🧠 Deep dive

Original authors: Zakir Hossen Shaikh, Manjira Roy, Manas Ranjan Chowdhury, Sangeeta Mohanty, Namita Rani Mall

Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ✨ This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer

In the world of hospitality, a restaurant is more than just a place to eat; it is a complex ecosystem where food, staff, and the environment all interact to create a single, cohesive experience for the guest. For decades, business leaders have understood that customers judge a restaurant not by a single moment, but by the sum of every interaction they have from the moment they walk in until they leave. This idea, known as the customer journey, suggests that loyalty is built through a series of small, connected touchpoints. Recently, a new layer has been added to this journey: sustainability. As people become more concerned about the planet and ethical practices, they increasingly look for signs that a restaurant cares about the environment, treats its workers well, and sources its ingredients responsibly. However, while many restaurants have adopted green practices, it has remained unclear how these individual efforts combine in the mind of the diner to create trust and, ultimately, a desire to return.

A team of researchers set out to map this uncharted territory by studying how customers in eastern India perceive sustainability across their entire dining experience. They focused on four specific areas where a restaurant interacts with the world: the food itself, the people serving it, the physical environment and waste management, and the behind-the-scenes rules and transparency of the business. The researchers wanted to know if these separate elements could be viewed as a single, unified experience of sustainability, and if that experience could be trusted enough to turn a one-time visitor into a loyal regular. To find the answer, they surveyed 400 diners from restaurants in the states of West Bengal and Odisha, asking them to rate their experiences and their feelings of trust and loyalty.

The study introduced a new way of thinking called "Sustainability Touchpoint Experience." Instead of looking at a recycling bin or a local ingredient list in isolation, the researchers treated these elements as parts of a larger whole. They found that when customers encounter sustainability in all four areas—food, people, planet, and governance—they form a powerful, combined impression of the restaurant's commitment to the world. Among these four, the food itself proved to be the most influential factor. When a diner sees that the food is sourced ethically, prepared with care to reduce waste, and offered with transparency, it has the strongest impact on their overall perception of the restaurant's sustainability. The other three areas—how the staff behaves, how the building is managed, and how honest the company is about its policies—also contribute significantly, but the plate of food remains the primary signal of a restaurant's values.

This unified experience of sustainability does more than just make a diner feel good; it actively builds trust. The data showed that when customers perceive a restaurant as genuinely sustainable across all these touchpoints, their confidence in the business grows. They begin to believe the restaurant is honest, reliable, and cares about more than just profit. This trust is not just a nice feeling; it is the critical bridge that turns a positive experience into a lasting relationship. The researchers discovered that trust acts as a mediator, meaning that the sustainable experience boosts loyalty partly by first building trust. When a diner trusts a restaurant, they are much more likely to return and recommend it to others. However, the study also found that trust is not the only path to loyalty; the sustainable experience itself also encourages people to return directly, suggesting that the value of the experience is felt immediately, even before trust is fully cemented.

To understand which areas managers should focus on to get the best results, the researchers used a tool that compares how important a factor is to how well the restaurant is currently performing in that area. They found that while restaurants were doing a decent job across the board, the area of food sustainability had the most room for improvement and the highest potential to increase customer loyalty. Even though the performance in areas like governance and staff treatment was relatively high, the food aspect was the most important driver of loyalty. This suggests that for a restaurant wanting to build a stronger relationship with its customers, the most effective strategy is to double down on the quality and ethics of the food itself. By improving how food is sourced, prepared, and presented, a restaurant can significantly boost the overall sustainability experience, which in turn strengthens trust and encourages diners to come back.

The study confirms that sustainability in a restaurant is not just a list of operational tasks or a marketing slogan; it is a tangible, felt experience that customers piece together from every interaction. When a restaurant aligns its food, its people, its environment, and its policies, it creates a narrative of responsibility that customers can believe in. This belief fosters trust, and that trust is the foundation of loyalty. The findings offer a clear roadmap for restaurant owners: to keep customers coming back, they must ensure that their commitment to the planet and their community is visible and consistent, with a special emphasis on the food that sits on the table. By treating sustainability as a complete journey rather than a collection of isolated actions, restaurants can transform their environmental efforts into a powerful engine for long-term success.

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