Does cognitive dissonance predict cross-domain belief consistency and online sharing of vegetarian dietary choices?

认知失调理论描述了人类如何努力在态度和行为上保持明显的一致性，从而避免持有矛盾的信仰或价值观的心理不适。它已被用来框定对食物的健康和道德的信念与随后的食物和饮食选择之间的关系（Ong，Frewer，& Chan，2017）。我们将根据个体在食物领域内的明显一致性对个体进行分类（例如，重视和实践健康饮食的“健康饮食者”，或重视动物福利并避免吃肉的“道德素食者”）;评估这种一致性在多大程度上延续到其他非食品领域（例如吸烟的“健康饮食者”）;描述这些领域内和领域间的连贯性模式如何随时间演变;并测试这些模式是否与生活事件相关。

Cognitive dissonance theory describes how humans strive for apparent consistency in attitudes and behaviours and thus avoid the psychological discomfort of holding contradictory beliefs or values. It has been used to frame the relationships between beliefs about the health and ethics of food and subsequent food and dietary choices (Ong, Frewer, & Chan, 2017). We will categorise individuals according to their apparent coherence within the food domain (e.g. a 'healthy eater', who values and practices healthy eating, or an 'ethical vegetarian', who values animal welfare and avoids eating meat); evaluate the extent to which this coherence carries over into other, non-food domains (e.g. 'healthy eaters' who smoke); describe how these patterns of coherence within- and between-domains evolve over time; and test whether these patterns are associated with life events.