Several studies have demonstrated the usefulness of nutritional claims (NCs) to help consumers make more informed food decisions. However, fewer studies have investigated the effect of personal and psychological consumer characteristics on their food purchase decision. Hence, the main aim of this study is to examine the impact of body image, emotional eating style, anxiety traits, and body mass index on consumer preferences for multiple NCs on the front of the package (FOP) of hedonic (potato chips) and utilitarian (toasted bread) products carrying the same NCs. Therefore, a real choice experiment (RCE) has been used and the willingness-to-pay-space model was estimated to analyse the interaction between personal and psychological characteristics and consumer preferences. The main finding suggests differences in purchase behaviour between potato chips and toasted bread. In particular, consumers are willing to pay more for toasted bread with one NC than potato chips with one NC. Moreover, personal and psychological consumer characteristics influence the purchase behaviour regarding food products with nutritional claims. However, only the anxiety trait appears to explain the differences between the selection of both types of food products. In line with this new evidence, we proposed some behavioural, political, and managerial implications.

中文翻译：

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个人和心理特征影响购买营养声称食品的意愿：恶行和美德食品之间的比较。

多项研究已经证明营养声明 (NC) 可以帮助消费者做出更明智的食品决定。然而，很少有研究调查个人和心理消费者特征对其食品购买决策的影响。因此，本研究的主要目的是考察身体形象、情绪化饮食方式、焦虑特征和体重指数对消费者对享乐（薯片）和薯片包装正面（FOP）上多种NC的偏好的影响。带有相同 NC 的实用（烤面包）产品。因此，采用真实选择实验（RCE）并估计支付意愿空间模型来分析个人心理特征与消费者偏好之间的相互作用。主要发现表明薯片和烤面包之间的购买行为存在差异。特别是，消费者愿意为含有一种 NC 的烤面包支付比含有一种 NC 的薯片更高的价格。此外，消费者的个人和心理特征影响对具有营养声称的食品的购买行为。然而，似乎只有焦虑特质可以解释两种食品选择之间的差异。根据这一新证据，我们提出了一些行为、政治和管理方面的影响。