• Nudge Podcast

Resources for #67 Growing this podcast with nudge experiments | Social proof

There are two words that strike fear into the hearts of behavioural scientists. Replication crisis. Today, many famous nudges can’t be replicated. In many cases, they were one-offs. So, rather than share studies, I wanted to run my own.


Here are all the behind the scenes resources from this episode.


Cialdini's original social proof study increased towel reuse from 35% to 44%.


The BIT team increased tax repayment by 15% with this one extra line (in yellow):


My original experiment with email subject lines failed. Here are the stats:


The second experiment worked a little better:


And here's the a/b ad experiment I ran on Reddit: