Using Email & Sports Bras to Increase Sunscreen Usage

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Using an email intervention to successfully encourage twenty-something females to apply sunscreen before running outside. Shows that placing sunscreen by a female runner's sports bras can act as an effective secondary trigger.

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  • Good work overall! In fact, really good work.

    Provocative title. Good on slide #2. Slide 4: the flow isn't clear. Perhaps number the frames? Good on slide 5 - persuasive!

    And 55% reported compliance -- good.

    How many respondents in Slide 8? I know it's not many, but still I'd suggest you put n = 8 or whatever.

    Very strong. Congrats!
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Using Email & Sports Bras to Increase Sunscreen Usage

  1. 1. DoesEmail + Sports Bra + Sunscreen = Habit?<br />Kristy Allenby<br />habits.stanford.edu<br />
  2. 2. How do you create a sunscreen habit?<br />Auto-matic<br />
  3. 3. How did this intervention work?<br />This intervention encouraging habitual sunscreen usage in 20-something female runners who don’t use sunscreen when running outside.<br />The technology is a daily email containing:<br />The technology sets up a trigger (sunscreen by the sports bra) that the runner sees right before going outside to run.<br />Weather report<br />Reminder to place sunscreen near sports bra<br />Running tip to keep participants interested in opening emails<br />
  4. 4. The Intervention Step-by-Step<br />Susan, a grad student, checks her email when she first wakes up. She has an email with the day’s weather and a reminder to put her sunscreen by her sports bra in case she runs outside that day.<br />The email and visual cue reminds Susan to check to make sure her sunscreen is next to her sports bra.<br />Susan applies sunscreen before her run.<br />When she gets dressed for her run later that day, she sees the sunscreen next to her sports bra and remembers to put it on. This is the trigger.<br />
  5. 5. Why target female 20-something women?<br />Twenty-somethings check email every morning<br />Twenty-somethings use internet to check the weather before running outside<br />Female runners need to put on a sports bra before running<br />Female twenty-somethings are more likely to care about sun damage and have latent motivation to use sunscreen due to age and outdoor activity, which can be easily tapped by a trigger<br />
  6. 6. Intervention Results <br />0% 55%<br />More than half of participants reported using sunscreen when they ran outside during the email intervention.<br />These were women who did not use sunscreen previously when running outside!<br />
  7. 7. Did this become a habit?<br />60%<br />A week after the intervention ended, over half of participants reported using sunscreen when they ran outside.<br />The intervention even worked for a participant who didn’t use sunscreen at all during the email campaign – she habitually used sunscreen the week after it ended!<br />
  8. 8. What was most useful in habit creation?<br />Participants rated both the email and the sunscreen by the sports bra as effective triggers<br />Putting the sunscreen by the sports bra was, on average, a more useful trigger than the email <br />Sports bra sunscreen reminder: 3.8*<br />Daily email: 3.4*<br />But…a double-trigger inspired more action than just one trigger<br />The email campaign proved to be a significant motivator for participants who weren’t influenced by putting sunscreen by the sports bras<br />* Rated on a scale of 1 (not useful) to 5 (very useful)<br />
  9. 9. Takeaways<br />Pairing physical reminders with technological reminders helped a greater number of participants change their behavior.<br />The intervention inspired longer-term behavior change, which can lead to an automated habit of applying sunscreen before an outdoor run.<br />

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