468 people were randomly assigned to one of ten groups and shown a website list of ten hotels, each with the hotels in a different order. They were then asked to choose one.

Regardless of their group, more people chose hotels placed at the start and end of the list.

Position matters.

‍Why? Initial options are prioritized in our memory (Primacy effect). Then, we see a pattern, switch off in the middle and only at the end do latter options held in short term memory (Recency Effect) influence the decisions we make, so put your best stuff at each end.

End on a high.

‍Advertisers promoting benefits of their product should combine recency with the Peak-End Rule, finishing with a significant or unique feature to enhance recall, conversion and seal the deal with a positive Surprise.

Order = opportunity.

‍For ecommerce or aggregation sites, consider monetizing product positioning for the start and (paradoxically) end of your lists. Alternatively, design for and highlight conversion fairness with random ordering.

40 people were split into two groups and shown a list made up of either 10 unrelated items (a number, a syllable, a colour, a word etc.), or 9 numbers and one isolated syllable placed second in the list. After a 10-minute reading task, both groups were then asked to recall the list.

Those in the isolation group successfully recalled the syllable 70% of the time, as opposed to 40% in the control.

Use complementary contrast. When showing a list of similar products (e.g. beer), weave in a contrasting product to create complementary cross-selling (e.g. nuts) or up-selling (premium beer) opportunities. 

Use contrast for clarity. If you offer a range of products, draw the undecided consumer to a strategic option, preventing choice overload and assisting sales. How might customers become overwhelmed with your range? How can you create a clear sense of contrast that avoids this negative feeling?

Contrast through context. If your brand is familiar, how can you place it in relevant yet unexpected contexts to heighten recall? For instance, British food delivery service Deliveroo could have a movie tie-in shot in London, where its turquoise drivers whiz by in the background 2-3 times over the course of the narrative.