According to new University of California San Diego research, curated product recommendations during online shopping can change whether people buy a product they had been considering.
The findings of the study were published in the journal 'Frontiers in Neuroscience'.
The study by Uma R. Karmarkar, assistant professor at the UC San Diego Rady School of Management and School of Global Policy and Strategy, found that display items that come from the same category as the target product, such as a board game matched with other board games, enhance the chances of a target product's purchase.
In contrast, consumers are less likely to buy the target product if it is mismatched with products from different categories, for example, a board game displayed with kitchen knives.
The study utilised eye-tracking -- a sensor technology that makes it possible to know where a person is looking -- to examine how different types of displays influenced visual attention.
Participants in the study looked at their target product for the same amount of time when it was paired with similar items or with items from different categories; however, shoppers spent more time looking at the mismatched products, even though they were only supposed to be there "for display".
"What is surprising is that when I asked people how much they liked the target products, their preferences didn't change between display settings," Karmarkar said.
"The findings show that it is not about how much you like or dislike the item you're looking at, it's about your process for buying the item," Karmarkar explained.
"The surrounding display items don't seem to change how much attention you give the target product, but they can influence your decision whether to buy it or not," Karmarkar added.
Karmarkar, who holds PhDs in consumer behaviour and neuroscience, said the findings suggest that seeing similar options on the page reinforces the idea to consumers that they're making the right kind of decision to purchase an item that fits the category on display.
"When the information is mismatched, it changes the scope of the decision. A mismatched display is comparable to shopping in a store with more variety," she said.
"You may consider a featured board game but if you can see other products to buy, this board game may not be the first kind of purchase you want to make. The mismatched items draw additional attention and compete with the category you were considering," she added.
The study involved 58 participants, ages 18 to 40, who had to make 36 online shopping decisions for real products with real money.
The findings showing differences in purchase rates replicate a set of studies Karmarkar published in 2017. In the new research, she was able to measure what parts of the display were engaging more or less attention.
In addition, the upcoming paper shows that matched displays increase purchase rates even when they include more attention-grabbing information, like details about price.
Karmarkar talked with industry experts about product recommendations systems, which shaped her approach to these questions.
Recommender algorithms can have different designs to meet a variety of retailers' respective goals.
Products can be shown with "mismatched" displays when retailers are using cross-promoting tactics based on prior customer behaviour or inventory they may want to sell more rapidly.
The board game example Karmarkar often uses is based on a real experience she had while shopping online during the month of October.
"I had been browsing games like 'Bananagrams' and when I reloaded the product page, a Halloween costumes display popped up," she said.
"Given my search history, the store probably estimated I had a family. So while I'm sure they wanted me to buy the game, they also knew they had an active shopper who might be interested in the Halloween costumes that needed to sell by the end of the month," she added.
"It looks like a win-win, but our work suggests that creating this mismatched situation could have lowered the chance that I would add the game to my cart," she explained.
While the study is useful for online retailers to know the benefits of showing same-category options on a specific product page, the research is valuable to consumers as well.
"This shows how outside forces shape our decisions in ways we might not recognise. If a shopper is looking for something specific, they are likely to focus their attention, regardless of recommender displays," she said.
"But when people are just 'browsing stuff online,' different page designs can create different patterns of attention. Store displays can change what we choose, even when they don't change what we like," she concluded.
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