Make Psychology Your Secret Weapon this BFCM: 3 things to increase your conversion rate

Key takeaways: 

Go beyond testimonials, tell your customer’s story. Social proof works because people look to others when uncertain. A randomised controlled trial on digital stress-management training found narrative testimonials boosted usage intentions and positive attitudes compared to information alone.  

Communicate genuine scarcity and urgency. Limited-time or limited-quantity offers trigger FOMO. Research shows countdowns and flash sales shorten decision windows, heighten emotion, and reduce price sensitivity. Psychologists distinguish demand-based scarcity (“nearly sold out”) from supply-based (“limited edition”). 

Middle option bias steers customers toward profitable choices. When given three choices, people gravitate to the middle to avoid extremes - the compromise effect. Controlled studies show that even if price scales shift, customers still prefer the middle. Bundle to create tiered options and upsell with progress indicators. 

Increasing conversion rate compounds future revenue

In today’s digital marketing landscape there is an overwhelming amount of metrics to optimise for potentially more profit, CTR, AOV, LTV, POAS… the list goes on. Focusing on conversion rate is a metric in which additional revenue compounds over time.

Here’s one example of a revenue projection for the Black Friday/ Cyber Monday (BFCM) sales periods, with projected increases in conversion rate:

The graphs plot a projected incremental increase in conversion rate of 20% - e.g., for October the project increase was from 1.88% to 2.26%, for November 3.01% to 3.61%, etc.

As the graphs show, this one time increase in conversion rate provides some serious dividends, particularly over high traffic months like November’s BFCM. From the projected August – December, the total incremental increase in revenue was $379,163.27.

Not bad for some subtle landing page changes.

Sales like BFCM provide once a year surges in traffic – make sure that traffic turns into revenue.

So let’s look at a few tangible ways we can increase conversion rate.

The default effect: capitalise on inertia

What is it?

  • The default effect, also known as the compromise effect, describes consumers’ tendency to choose the middle or “default” option among a set of choices to avoid extremes.

  • Controlled experiments show that when participants are offered three pledge levels in crowdfunding, most pick the middle tier regardless of how the values shift. By repositioning price scales, researchers nudged people toward higher pledges because the middle option always appeared the most reasonable.

How to implement

  1. Bundling: Offer three options of a product that include bundles options. Design the “default” option to include the features most customers need and price it between an entry-level option and a high-end, fully loaded option.

  2. Anchoring with a high-end option: Use a premium plan as an anchor so that the mid-tier appears like a good deal. At the same time, ensure the basic plan lacks certain benefits so customers fear missing out.

  3. Clear comparison tables: Present features side by side so that the value trade-offs between tiers are obvious.
  4.  

We often opt for what is easiest – make sure this is represented in your user flow.

 Keys to success

  • Gamify and indicate progress: Leverage things like free shipping thresholds or additional discount tiers to encourage consumers to “upgrade”.
  • Provide genuine value at each tier: The premium tier should offer real benefits for customers who need them, otherwise the strategy becomes manipulative. Put yourself in your customer’s shoes and bundle what you intuitively think they would want as well – back this up with data where possible.
  • Use honest comparisons: Clearly state what is and isn’t included in each plan to maintain transparency.

Beyond social proof: Take your reviews to the next level

What is it?

Social proof refers to our tendency to be influenced by the actions of other people, particularly when those people are similar to us or in moments we are uncertain.

This study compared generic information with narrative testimonials and found that testimonials increased usage intention (d ≈ 0.5) and positive attitudes toward the program.

The type of evidence matters.

Your customer learns through stories – don’t let your precious customer reviews get lost in the noise.

Another study of persuasive messaging reports that narrative evidence evokes affective responses and influences intentions, whereas statistical evidence tends to affect beliefs. The same research shows that narrative messages increase perceived warmth, while statistical messages boost perceptions of competence. Stories humanise a brand, making it feel warmer and more approachable.

How To Implement This

  • Authenticity and relatability. Stories must reflect real experiences. Use customer quotes and data to support the narrative. Highlight setbacks and solutions to show credibility.
  • Targeted narratives. Customise case studies to match different customer personas or industries. The RCT shows that similar testimonials (e.g., from students to students) are more persuasive.
  • Combine narrative with evidence. While stories drive emotion, supporting them with data builds trust. Include metrics such as ROI, conversion uplift or time saved to satisfy analytical thinkers.

Keys to success

  • Authenticity and relatability. Stories must reflect real experiences. Use customer quotes and data to support the narrative. Highlight setbacks and solutions to show credibility.
  • Targeted narratives. Customise case studies to match different customer personas or industries. The RCT shows that similar testimonials (e.g., from students to students) are more persuasive.
  • Combine narrative with evidence. While stories drive emotion, supporting them with data builds trust. Include metrics such as ROI, conversion uplift or time saved to satisfy analytical thinkers.

Scarcity: Turn your limited stock into a plus

What is it?

  • The power of scarcity taps into evolutionary psychology, where a big part of our behaviour is driven by the availability of resources deemed valuable to us – this once meant things like food and water. Today, the scarcity of those items are (mostly) absent to us, but the psychological mechanisms remain and latch onto other things we look for.
  • Psychology distinguishes two main types of scarcity appeals:
  1. Demand‑based scarcity (e.g., “only a few left” or “almost sold out”) signals that many people are purchasing the product. This indicates popularity and can reassure uncertain buyers.
  2. Supply‑based scarcity (e.g., “limited edition” or “exclusive”) signals uniqueness. Research shows that supply‑based scarcity increases purchase intention for consumers with a high need for uniqueness.
  • Limited‑time discounts exploit FOMO (fear of missing out). This study notes that flash sales, expiring coupons and countdown timers induce emotional arousal, shorten decision time and reduce price sensitivity.
  • However, this study found that overuse can lead to fatigue and distrust, so be careful when implementing.

How to implement?

  1. Countdown timers on sale pages. This split test added a “Time left to purchase” notification with a bright red countdown timer plus real‑time purchase counts. The variation with urgency cues achieved a conversion rate almost three times higher than the control.
  2. Show inventory levels. When stock reaches below a specific amount, display messages like “Only 2 left in stock” or “5 people viewing this item.” Real‑time social proof nudges help customers feel they will miss out if they hesitate.
  3. Limit sale duration. Short, well‑publicised sales (e.g., 24‑hour flash deals or BFCM weekend discounts) encourage faster decisions. After the promotion ends, prices should return to normal, otherwise, urgency cues lose credibility.
  4. Exclusive releases. For luxury or niche products, use supply‑based scarcity through limited editions or small batch runs. Highlight the exclusivity to appeal to consumers seeking uniqueness.

Key to success:

  • Be honest and transparent. Scarcity cues must reflect real stock or time limits. Fake scarcity can erode trust and harm long‑term brand equity.
  • Match scarcity type to audience. Supply‑based scarcity appeals to consumers who value uniqueness but may deter those seeking popular items. Use demand‑based scarcity when popularity signals quality.
  • Avoid overuse. Continuous “sale” messages desensitise customers and reduce urgency. Limit urgency campaigns to special occasions like BFCM or product launches.
  • Combine with social proof. Showing both limited stock and the number of people purchasing magnifies urgency. However, test different combinations (e.g., timer only, stock only) to determine what resonates with your audience.

Quick checklist for BFCM conversion optimisation