Twin study suggests rationality and intelligence share the same genetic roots - the study suggests that being irrational, or making illogical choices, might simply be another way of measuring lower intelligence.

[u/mvea]

https://www.psypost.org/twin-study-suggests-rationality-and-intelligence-share-the-same-genetic-roots/

[u/Xolver]

Isn't doing a study because you have some (maybe strong) hypothesis and want to test it one of the best reasons of doing a study? What's the problem with that? It certainly beats doing a study only because you know you need funding and you have to shoehorn a proposal. 

[u/neobeguine → u/Xolver]

The concern is that if you are too married to your hypothesis, you will find reasons to ignore any results that might contradict it and chose measures or tests that are most likely to give you the result you want.  It's like trying to do a push poll on the universe

[u/SoldnerDoppel → u/neobeguine]

That's why replication is so important, though there's little interest in it since it's so "unglamorous".

[u/BonJovicus → u/SoldnerDoppel]

It isn't even considered unglamorous. It just gets branded as derivative and boring. No major journal is going to publish a replication experiment that has the same results. And even if your results are different, you will then have to jump through hoops to have a good reason for why your results are different assuming the original result wasn't fraudulent. At that point you are years of funding down the drain on something that might not pan out.