In an example of small emotional rewards, I mentioned that the GoDaddy ads from the early 2000s were a good example. I mentioned what they did, but I did not mention just how effective they were. As someone who’s been in web development for nearly 3 years now, almost all of the people that come to me with a domain bought their domain from GoDaddy. Almost everyone I know who is older than 30 bought their domain from GoDaddy. This is just my experience, of course, but I think it acts as an example of just how effective GoDaddy ads were. They’re basically one of the first websites most people think about when they think about purchasing a domain.
Here’s a link to Cialdini’s book on persuasion. This is currently considered one of the foundational books on the psychology of persuasion. I recommend this edition, which came out in 2021.