The Psychology of Why People Buy: Top 10 Factors That Influence Purchase Decisions
As an online sales and marketing expert, I‘ve spent years analyzing the behaviors that drive consumers to buy. And let me tell you, it goes far beyond simply having the best product or the lowest price. The psychology behind purchasing decisions is complex and multifaceted.
To help brands better understand their customers, I‘ve compiled a list of the top 10 factors that influence buying behavior, backed by industry research and real-world data. Whether you‘re an ecommerce startup or an established retailer, leveraging these insights is key to driving conversions and loyalty.
1. Product Quality (cited by 56% of consumers)
First and foremost, shoppers want products that deliver on their promises. A study by Retail Dive found that 56% of consumers rank quality as the top factor influencing purchase decisions, even above price.
This aligns with the psychological principle of "loss aversion"—the idea that humans feel the pain of losing something twice as intensely as the pleasure of gaining something of equal value. In other words, we really hate feeling like we wasted money on an inferior product.
To capitalize on this, brands should:
- Emphasize the quality and durability of products
- Use professional photos and videos to showcase items in the best light
- Provide detailed specs on materials, features, construction, etc.
- Encourage customers to leave reviews attesting to quality
2. Competitive Pricing (important to 80% of online shoppers)
Of course, price still matters a great deal, especially in the ecommerce space. Research from Wiser shows that 80% of online shoppers cite competitive pricing as a top factor when choosing where to buy.
Psychologically, this plays into our natural desire to feel like we‘re getting a good deal. Snagging a bargain gives us a little boost of dopamine, the feel-good neurotransmitter. It‘s why sites like Wish and Brandless have found success—even if the quality isn‘t the best, the rock-bottom prices are hard to resist.
To stay competitive without slashing margins, try:
- Conducting regular price comparisons of top competitors
- Offering limited-time discounts and promotions
- Providing bulk pricing or bundles
- Giving loyal customers exclusive deals
3. In-Store Research (done by 62% before buying online)
Ecommerce may be booming, but brick-and-mortar is still highly relevant. In fact, a First Insight Report found that 62% of shoppers research big-ticket items in-store before ultimately purchasing online, a practice known as "webrooming."
Why? Risk aversion. For considered purchases, people want to see and feel a product before committing, even if they know they‘ll get a better deal online. Physically interacting with an item provides a sense of security you can‘t get from a tiny thumbnail.
Some ways to ease hesitation:
- Partner with physical retailers to get products in front of shoppers
- Offer free and easy returns in case items don‘t meet expectations
- Use detailed photos, videos, and AR to digitally emulate the tactile experience
- Implement virtual appointment shopping and live chat
4. Product Videos (consumed by 90% of tech shoppers)
Video marketing has exploded in recent years, and product videos are leading the charge. A Google survey revealed that 90% of consumers now watch videos to help inform tech-related purchases, and that number is only rising.
The power of video comes down to a few factors:
- Humans are visual creatures and process video 60,000x faster than text
- Movement grabs attention in a way that static images simply can‘t
- Videos feel more authentic and trustworthy, like a personal recommendation
If you haven‘t already, it‘s time to embrace video:
- Create demos showing products in action from every angle
- Answer common questions and objections
- Use customer-generated clips for social proof
- Make videos easily shoppable with links to product pages
5. Mobile Optimization (crucial for 54% of shoppers)
I probably don‘t need to tell you that mobile commerce is the future. In 2022, an estimated 54% of retail ecommerce sales came from mobile, and that share is steadily climbing.
Smartphones enable us to shop literally anytime, anywhere, usually while juggling other tasks. Mobile browsing often feels more casual and less intimidating than sitting down at a computer. The downside is that our attention spans are even shorter, and cart abandonment rates are higher.
Winning over mobile shoppers requires:
- Lightning-fast page load speeds (under 3 seconds)
- Responsive design that adapts to any screen size
- Super streamlined checkout (ideally one-click)
- Integration with mobile wallets like Apple Pay and Google Pay
- SMS marketing for immediate engagement
6. Social Proof (directly impacts 81% of buyers)
We humans are social creatures, and that‘s never been more evident than in the age of social media. A survey by Stackla found that 81% of consumers say their purchasing decisions are directly influenced by their friends‘ social media posts.
The psychology of social proof is simple—we view the opinions and actions of our peers as more credible than traditional advertising. When we see someone we know and trust raving about a product, we instinctively want to experience those same benefits.
To leverage social proof:
- Actively encourage customers to post about their purchases
- Repost user-generated content on your own social channels
- Display customer reviews and testimonials prominently
- Use hashtag campaigns to create viral momentum
- Partner with relevant influencers and thought leaders
7. Friend Referrals (drive 30% of engagement)
Taking it a step further, a report from SproutSocial discovered that 30% of people are most likely to engage with a brand when its content is shared by a friend. In a sense, this is the holy grail of social proof.
Think about it—if you saw an ad from a company you‘d never heard of, you‘d probably just keep scrolling. But if your best friend shared that same post saying, "You‘ve got to check out this brand, I‘m obsessed!"? Chances are, you‘d at least click through.
Some referral strategies to try:
| Tactic | Incentive |
|---|---|
| Launch a customer referral program | Offer discounts or account credit for successful referrals |
| Run a contest or giveaway | Require entrants to tag friends in the comments |
| Implement "refer a friend" messaging | Provide a unique link for customers to share with their network |
| Offer a "give $10, get $10" promotion | Let customers gift a friend $10 off while earning $10 themselves |
8. User-Generated Visuals (preferred by 84%)
Piggybacking off social proof, user-generated photos and videos are incredibly powerful. Research from Photoslurp found that 84% of shoppers say user-generated visuals are more influential than professional brand photos.
Why? Authenticity. Customer photos and videos show your products being used by real people, in real life. It helps shoppers envision how an item might fit into their own lifestyle, as opposed to the styled perfection of branded content.
Some UGC tactics to employ:
- Repost customer photos on your product pages and social channels
- Create a branded hashtag where users can share content
- Reach out to customers and ask permission to feature their posts
- Incentivize UGC creation with perks like discounts or free gifts
- Use polls and questions to crowdsource video ideas
9. Free & Fast Shipping (expected by 79%)
To the modern consumer, shipping fees are a massive deterrent. A whopping 79% of US shoppers say free shipping significantly impacts their purchasing decisions, with many refusing to complete an order without it.
Psychologically, we view shipping costs as a loss rather than simply part of the price. Even if a product is slightly more expensive than a competitor‘s, free shipping still feels like a better deal. It‘s classic loss aversion at work.
How to make free shipping viable:
- Bake shipping costs into product prices and offer it on everything
- Provide free shipping over a certain threshold (e.g. $50+)
- Give loyalty program members complimentary shipping
- Offer it as a seasonal promotion to drive sales
- Get strategic about your carrier mix and box sizes
10. Hassle-Free Returns (make 92% more likely to buy again)
Finally, a generous and clearly-communicated return policy is non-negotiable for driving conversions. A UPS survey showed that 92% of customers will buy again if returns are easy, and 67% check the return policy before even making a purchase.
Humans are inherently risk-averse. We want to be confident that if a product doesn‘t meet our expectations, we won‘t be stuck with it. A flexible return policy alleviates that fear and makes shoppers more comfortable taking a chance on your brand.
Some best practices for returns:
- Aim to offer at least 30 days, with 60-90 being even better
- Cover the cost of return shipping if at all possible
- Make your policy easy to find, not hidden in the fine print
- Provide printable return labels and clear instructions
- Process refunds quickly to maintain trust
By understanding these core psychological principles and social behaviors, brands can create digital experiences that align with how today‘s shoppers actually make decisions. It‘s not about gimmicks or manipulations—it‘s about meeting customers where they are and providing them with the information, social proof, and seamless journey they crave.
The brands that prioritize these key purchasing factors will ultimately win the hearts, minds, and wallets of the modern consumer. And in the fast-paced world of ecommerce, that‘s what separates the leaders from the laggards.
