Abstract (eng)
Retail shelf space is a scarce resource and hence a thorough planning of the shelving is necessary. The interests of retailers, manufacturers and customers all need to be taken into account when designing the shelf layout. On the one hand, it has to be decided where the individual products are placed in the shelf, and how often it is supposed to be present, but on the other hand, it is also important how the shelf will be arranged overall (e.g., will products be sorted by brand or by flavor). The present study investigates those research questions with the help of a stationary eye-tracker. That way, it is possible to measure the attention of the participants and analyze which parts of the shelf get more attention than others. And through manipulations it is also possible to find out which factors contribute to guiding customers‘ attention towards certain products. Additionally to attention, changes in purchase likelihood based on changes in the shelf layout are researched as well. Furthermore, another important question to be answered is which shelf arrangement makes it easier for customers to orient themselves. Contrary to expectations, neither a placement on the top half of the shelf nor a location on the left side led to the expected positive effects on attention and purchase likelihood. However, saliency, the use of multiple items of the same products and additional signs increased the amount of attention a product received. Saliency even directly affected purchase likelihood, which could not be found for the other factors. When taking the shelf layout as a whole into account, products are indeed found faster, when they are placed further on the left. Furthermore, search duration could be decreased when the shopper focus of the customer was matched with the way the shelf was arranged; brand shoppers found their products faster when the shelf was vertically arranged by brand and the opposite is true for attribute shoppers. Overall, the study could show that there are numerous ways to guide consumers‘ attention across the supermarket shelf, but direct effects on purchase likelihood are scarce.