Abstract
A departmental store layout and product placement shape the consumer decision-making process. This paper begins by charting the psychological flow of decision making and identifying the critical points that lead to decision fatigue, a cognitive stage where repeated or complex choices exhaust mental resources and lead to suboptimal decisions. This paper further aims to provide a nuanced understanding of how the retail environment of a department store influences consumer behaviour and cognitive load. Three types of store layouts are analysed: free form, grid and racetrack. A free-form layout allows the consumer to explore products and integrates various departments together for higher sales; this configuration causes comparatively high levels of decision fatigue among consumers as it encourages browsing and they are left to navigate products by themselves. A grid layout eases the navigation process by arranging aisles in a parallel structure. However, retailers can achieve the best shopping experience with low levels of decision fatigue among shoppers by implementing a racetrack layout, which not only reduces the need for consumers to decide their path but also reduces cognitive overload by guiding the consumer along one main aisle.

This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Prachi Agarwal
