With 90% of people being right-handed, brands can leverage a cognitive bias by orienting interactive elements to the right. This makes it easier for the brain to mentally simulate using the product. Studies showed moving a spoon to the right of a yogurt bowl increased purchase intent by 20%, while moving a wine glass to the right of a bottle boosted sales by 32%.

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In a study, subtle gray tape lines on a gray carpet—consciously unnoticed by shoppers—steered 18% of them into a target aisle, up from just 4% before. This shows that retailers can use almost invisible environmental cues to powerfully manipulate shopper behavior and store pathing without their awareness.

People gravitate toward the middle option when given three choices, a bias known as extremeness aversion. To sell more of a specific product, frame it as the middle choice by introducing a more expensive, super-premium 'decoy' option. Its role is not to sell, but to make the target option look like a reasonable compromise.

Humans naturally conserve mental energy, a concept Princeton's Susan Fisk calls being 'cognitive misers.' For most decisions, people default to quick, intuitive rules of thumb (heuristics) rather than deep, logical analysis. Marketing is more effective when it works with this human nature, not against it.

Our brains have 'mirror neurons' that fire when we observe an action, making us feel as if we are performing it. Showing someone biting a cookie is more effective than showing the packet because it makes the viewer mentally simulate the experience, increasing their desire for the product. This creates a powerful 'mimetic desire'.

Donald Miller argues that purchases are driven by words that are easy to understand, not by brand aesthetics. Making a customer think is a barrier to a sale. Simplifying your message to reduce mental effort is more effective than having a beautiful website or logo, as exemplified by Amazon's success.

Our brains favor things that are easy to think about ('processing fluency'), subconsciously misattributing this ease as a positive feeling toward the product itself. Subtle cues like font matter immensely; a slim font for a 'slim' phone can increase purchase intent by 27% simply because the visual aligns with the message.

Marketers over-index on visuals, but other senses are more powerful. The brain processes sound 1,000 times faster than images, making audio branding potent. Scent is our most primal sense, bypassing logic to connect directly with deep memories and emotions, capable of boosting sales by 41% without the shopper even noticing.

In a study, a faint chocolate smell was pumped into a store. While none of the 105 shoppers interviewed afterward consciously noticed the scent, the featured chocolate brand's share jumped by 41%. This demonstrates that subconscious sensory cues can bypass rational thought and directly influence purchasing decisions.

Extensive behavioral research on ad performance reveals a clear pattern: simplicity is superior. Creatives with multiple storylines, clutter, and excessive detail create cognitive load and reduce effectiveness. The best-performing ads feature a single, clear message that is easy for the human brain to process quickly.

By introducing a third, strategically priced but less appealing option (the "decoy"), you can manipulate how customers perceive value. A medium popcorn priced close to the large makes the large seem like a much better deal. This proves that value is relative and can be shaped by deliberate choice architecture.