“…A shopping list used by the consumer while at store and while making final shopping choices may contribute to the accuracy of the final decision being made. Previous studies analysing shopping lists used by the consumers and their impact on consumer behaviour comprised various aspects, such as list compilation, list contents, assistance in memorising shopping items, factors determining the compilation of the final version of the shopping list, the effectiveness of having a list vis-à-vis actually purchased items, developing an external memory, or doing planned and unplanned shopping (Spiggle, 1987;Thomas & Garland, 1993;Freyd & Gleaves, 1996;Block & Morwitz, 1999;Hand, Dall'Olmo Riley, Harris, Singh, & Rettie, 2009;Ghosh & Gilboa, 2014;Harsha Jayawilal & Premeratne, 2017;Martínez-Ruiz, Blázquez-Resino, & Pino, 2017;Ahmed & Ting, 2019;Morrissette & Lusk, 2022). In particular, with regard to the issues raised in this study, planned and unplanned purchases should be treated, because these consumer actions can be combined both with the issues of having a shopping list and the rationality of choices made (Abratt & Goodey, 1990;Hunt & Lambe, 2000;Sohn & Ko, 2021).…”