Wednesday, 9 July 2025

PEAK END RULE

 A

The Peak-End Rule is a psychological heuristic that explains how people remember experiences—not by averaging every moment, but by focusing primarily on:

  1. The most intense point (the peak—positive or negative), and

  2. The final moments (the end) of the experience.

This concept was developed by psychologist Daniel Kahneman and colleagues.


🧠 What It Means:

When we evaluate a past experience (like a hospital visit, vacation, or painful procedure), we don’t base our memory on the total duration or every detail, but rather on:

  • Peak: The emotional high or low—e.g., the worst pain during a procedure or the best moment of a trip.

  • End: How the experience concluded—calmly, painfully, abruptly, etc.

This applies to memories, not the actual experience in real time.


📍Examples:

👶 Pediatric Example:

  • A child’s vaccine visit involves moderate discomfort, but the injection is the peak and the comforting reward or soothing at the end forms the end.

  • If the visit ends with a smile, praise, or a sticker, the memory is likely less negative, even if the injection hurt.

🏥 Healthcare:

  • Studies show patients rated colonoscopies with longer, less painful ends as less unpleasant—even if the overall procedure took longer.

🏖️ Vacation:

  • A week-long trip with one thrilling adventure (peak) and a peaceful last day (end) will likely be remembered more fondly than a uniformly pleasant but unremarkable one.


🎯 Applications:

🩺 In Healthcare (e.g., for paediatricians):

  • Make painful procedures end gently (e.g., distraction, rewards, soothing).

  • Improve the final impression during visits (friendly goodbye, praise).

  • Focus on positive peaks: e.g., successful milestones, shared laughter.

🧘 In Meditation or Wellness:

  • Design sessions so they end calmly and positively.

  • Use high points (like moments of deep focus or emotional insight) to create memorable sessions.

🧪 In Research or UX Design:

  • Users remember apps, services, or tests more favorably if the peak moment is positive and the end experience is smooth.


🧩 Related Concept:

  • Duration Neglect: People often ignore how long an experience lasted when recalling it. Only the peak and end really matter for memory.


Would you like an illustration of how the Peak-End Rule works in a patient journey or a worksheet to apply it in practice (e.g., in pediatric care or patient experience design)?

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