“Fewer children in the United States are getting vaccinated. That’s bad news for those kids, and also for public health in general. Often, the response is to argue and debate and get angry at people who are we see as making terrible, irrational decisions. Instead of doing that, let’s use science to understand why this is happening in the first place.” (YouTube)
This is an excellent video about the science of anti-vaccination. It covers many topics to do with why people think vaccinations cause autism, including cognitive bias, negativity bias, explanatory attribution, confirmation bias, omission bias, naturalness bias, and risk perception.
All of these factors lead people to not vaccinating their kids. This is not a science problem (vaccines work), it’s a human problem. Onwards!