Gruntkowski and Martinez examined the impact of factors such as perceived risk and perceived usefulness on German consumers’ intention to purchase groceries online once the COVID-19 pandemic had subsided. They also compared consumer perceptions before and during the COVID-19 outbreak. This comment shows that Gruntkowski and Martinez’s research suffers from a number of problems, the most important of which is the use of an unrepresentative sample. They should therefore have refrained from generalizing their findings to the German population.

中文翻译：

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评论 Gruntkowski，LM；Martinez，LF 德国在线杂货购物：评估 COVID-19 的影响。J.理论。应用。电子。商业者。资源。2022, 17, 984–1002

Gruntkowski 和 Martinez 研究了认知风险和认知有用性等因素对 COVID-19 大流行平息后德国消费者在线购买杂货意愿的影响。他们还比较了 COVID-19 爆发之前和爆发期间消费者的看法。这一评论表明，Gruntkowski 和 Martinez 的研究存在许多问题，其中最重要的是使用了不具代表性的样本。因此，他们应该避免将他们的发现推广到德国民众。