Am I an idiot or is this clearly non-causal?
Am I an idiot or is this clearly non-causal?
These results show that there is an immediate active behavioral response to infection before the expected onset of symptoms or sickness behavior.
1. no placebo, so it's unclear whether it was actually due to the flu virus or some unrelated factor. The study admits this might be an issue, but casually dismisses it with "We looked for this, and found no such effects."
2. the "flu virus" in question is actually a vaccine. Needless to say there's a big difference between getting a flu shot and an actual flu.
But thinking about it, you're also probably in a good mood at the same time. So yeah, of course you're going to be more sociable.