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This study aims to explicate consumers’ intentions to use online food delivery systems (OFDS) subscription services. The study revisited the unified theory of acceptance and use of technology.

A typical methodology that involved a confirmatory factor analysis, followed by structural equation modeling, was used to test the hypotheses using a sample of 573 OFDS users from the USA.

The results revealed that social influence has the most significant impact on consumers’ intentions to use OFDS subscription services, while effort expectancy and perceived security have relatively lower impacts on consumers’ intentions to use OFDS subscription services. In addition, the study revealed the role of compatibility and convenience orientation in shaping consumers’ OFDS system perceptions (e.g. performance and effort expectancy).

The results provide several theoretical and managerial implications and open new avenues for future research. The study advances the literature by validating the set of antecedents of important core perceptions (e.g. performance expectancy and effort expectancy). The study also provides implications for two types of practitioners, such as OFDS and restaurants.

To the best of the authors’ knowledge, this is the first study to examine consumers’ intentions to use OFDS subscription services. This study is also the first to examine key factors influencing consumers’ intentions to use OFDS subscription services.

本研究旨在阐明消费者使用在线订餐（OFDS） 订阅服务的意图。该研究重新审视了 Unified Theory of Acceptance and Use of Technology 理论（UTAUT2）。

本研究采用典型的量化研究方法, 包括确认性因子分析和结构方程建模, 并使用来自美国的573名OFDS用户的样本来测试假设。

结果显示, 社会影响对消费者使用OFDS订阅服务的意图具有最显著的作用, 而努力期望和感知安全对消费者使用OFDS订阅服务的意图影响较小。此外, 研究揭示了兼容性和便利性取向在塑造消费者对OFDS系统感知（例如, 性能和努力期望）方面的作用。

研究结果提供了多方面的理论和管理启示, 并为未来研究开辟了新的途径。本研究通过验证重要核心感知（例如, 性能期望和努力期望）的前因完善了相关文献。另外, 本研究还为OFDS和餐厅等两类从业者提供了重要启示。

本研究是第一个调查了消费者使用OFDS订阅服务意图的研究, 也是首次研究了影响消费者使用OFDS订阅服务意图的形成因素。

The study's purpose was to examine the role of two main factors in the design of online food delivery systems (OFDS) user interfaces: the display of pictures and calories – on consumers' attitudes toward online food delivery systems, intentions to use such systems, spending on a food item and tipping behavior.

The study is grounded in the elaboration likelihood model. A 2 × 2 randomized post-test only between-subjects experimental design manipulated the types of pictures (food item only vs consumers eating a food item) and calorie information display style (numbers vs activity symbols) to determine whether they influence consumers' attitudes, intentions to purchase, spending and tipping behaviors.

The results show that the calorie display style influences consumers' intentions to use such systems and consumers' tipping behaviors toward the delivery driver. It was also found that the type of picture shown to consumers influences their intentions to purchase through ODFS, such that pictures of consumers enjoying a product is more effective in stimulating intentions to purchase than pictures containing only the food items.

This study advances the current knowledge on web design for restaurants wishing to distribute via online food delivery systems. Moreover, this study extends the literature on persuasion in online environments by focusing on foodservice – an area that only recently has undergone substantial distribution online. Finally, this study advances the literature on tipping behavior.

This study provides several contributions for both restaurants and online food delivery system designers. Specifically, it illustrates exactly how specific elements in the design of the web interface and the message targeted at consumers influence consumers' behavior. Most importantly, this study provides insight into tipping behaviors for the delivery driver. This is important because the delivery driver is an important participant in the new value chain of restaurant delivery.

As the first study to develop an experiment that tests these important design conditions, this study offers several critical theoretical and practical implications. This study is the first attempt to examine various ways to present persuasive information in an OFDS in order to stimulate consumers' behaviors. Moreover, this study illustrates that the use of website design that enhance social presence is critical to website effectiveness in OFDS.

The recent development of online food delivery systems (OFDS) consolidated the restaurant industry’s representation in the electronic distribution landscape. The purpose of this study is to examine consumers’ intentions to use OFDS.

A comprehensive structural model was developed based on UTAUT2 and extended the model with three additional constructs: impulse buying tendency, congruity with self-image and mindfulness. Data were collected from 605 US respondents. Confirmatory factor analysis and structural equation modeling were used to test the model.

Performance expectancy was the strongest predictor of intentions to use OFDS, followed by congruity with self-image. Low-magnitude predictors included habit and mindfulness, while impulse buying tendency had a negative impact on intentions to use OFDS.

The study validates a comprehensive yet parsimonious conceptual model that explains consumers’ intentions to use OFDS. The model brings together constructs that capture the essence of the online food ordering tasks and the consumers’ cognitive processes that inform such tasks.

This study offers substantial practical implications for two types of practitioners: OFDS developers and restaurants and provides a mapping of the factors influencing consumers’ intentions to use OFDS.

This study provides a first theoretical perspective on consumers’ intentions to use OFDS, which have not been studied so far. Studying such intentions provides insight into consumers’ adoption behaviors, which are critical to the success of OFDS.

This study aims to develop and validate a conceptual model that explains consumers’ persuasion by the information available on online food delivery systems (OFDS). The study validated consumers’ price savings orientation as an antecedent of two types of browsing behaviors (utilitarian and hedonic). Browsing and social influences were examined as predictors of persuasion.

A literature review was conducted to determine constructs that constituted the best conceptual model for this study. To test the model, an online instrument was developed, and data were collected with the help of a global marketing panel company from 333 consumers who have used OFDS. Confirmatory factor analysis and structural equation modeling were used to test the hypotheses of the model.

The study found that consumers’ price savings orientation strongly influenced both types of browsing. However, while utilitarian browsing did not influence consumers’ persuasion, hedonic browsing and social influence were strong predictors of persuasion.

Given the uniqueness of the study that stems from its task-technology context and the type of product being purchased, this study advances the literature in hospitality information technology, especially in the relatively neglected foodservice information technology area. The study also provides implications for both restaurants and OFDS as critical stakeholders in this important area.

To the best of the authors’ knowledge, this is the first study to examine consumers’ persuasion in a food-service online retail context. This study is also the first to examine both types of browsing as distinct constructs in hospitality and to explain their differential role in persuasion.

本论文提出和验证了在线送餐系统（OFDS）解释顾客劝服的理论模型。本论文检测了顾客省钱心理作为两种浏览行为的动力（功利型和享乐型）。浏览行为和社会影响作为顾客劝服的因子在本文中进行了检验。.

本论文通过审阅文献以找到最佳模型。通过在线采样的方式, 与全球营销公司合作, 搜集数据, 样本数量为333位使用过OFDS的顾客。分析方法为验证性因子分析和结构方程模式以验证假设模型。.

研究发现顾客省钱心理对两种浏览模式有着重大影响。然而, 功利型浏览行为并不影响顾客劝服, 但是享乐型浏览和社会影响成为劝服的强烈动力。.

由于本论文的独特性在于其任务-科技背景和购买产品类别, 本论文对酒店信息科技的文献有着延展性贡献, 特别是在较少关注的餐饮服务信息技术领域。本论文还对饭店和OFDS, 两大在此领域重要利益相关者提供了启示。.

本论文是首篇检测在线餐饮销售领域中的顾客劝服问题。此外, 本论文也是首篇检测两种类别浏览行为, 以及检验其行为对顾客劝服的特别作用。.

Information and communication technologies (ICTs) are a key player in the food services and restaurants sector; thus, the aim of this work consists in studying the previous research on ICTs in food services and restaurants in the context of tourism and hospitality through a systematic literature review.

The systematic literature review is performed on full papers published in journals included in the Journal Citation Report of the WoS in the category of Hospitality, Leisure, Sport and Tourism. A total of 165 articles from 28 journals are analyzed, following different criteria, such as the research methods, perspectives, statistical techniques, geographical focus, topics, technologies, authors and universities.

The restaurant sector is more and more based on the creation of experiences and ICTs, through their multiple possibilities, can undoubtedly contribute to adding value to the simple meal and create and recreate experiences to attract and retain customers who are increasingly sophisticated and hooked on ICTs. ICTs are basic for managers taking decision at the highest level in food services and restaurants, so ICTs should not be seen as a technical tool but as an essential element for top management.

This paper examined articles from very well-known tourism and hospitality journals, leaving aside others as well as different publication formats such as books or papers presented at conferences.

A significant contribution made with this paper is the availability of a list of topics in the context of ICTs in food services and restaurants. These topics are classified into three areas (Consumers, Suppliers and Environment and Tendencies) that can serve as a future research framework. The paper also provides useful information to restaurant managers about ICTs, to researchers for their future projects and to academics for their courses.