And it can also cause a stir and negative publicity, as Facebook experienced in 2014. They then published about emotional contagion through social networks and had manipulated users' timelines for their experiments. That experiment involved almost 700,000 users. Brainpower and openness So mega-studies don't necessarily rely on the numbers, but on the brainpower and transparency. A mega-study involves dozens of interventions that have been developed by several different research groups.
The hypotheses underlying the interventions are often based on existing psychological literature and build on this. Does not have to plow through all the scientific literature himself, but can piggyback on the literature Telemarketing list study of academics. And, because all results and methods have been published, we immediately see what is apparently effective and what is not. You can then use those insights in your own tests to see whether what worked best in the mega study also translates into your organization.
Vaccination nudge A mega study by Milkman, Duckworth and others appeared in May 2021 and was called: A megastudy of text-based nudges encouraging patients to get vaccinated at an upcoming doctor's appointment. This mega-study was a large field experiment (N = 47,306) in which 19 different nudges were tested per SMS to get people vaccinated against flu. What was the highest scoring text? “There is a flu vaccine ready for you.” This was sent 3 days and 1 day before the appointment.