"Why randomized controlled trials matter and the procedures that strengthen them" from Our World in Data

Looking to freshen up your readings for Research Methods? Or for a good, brief RM primer for a stats or psych class? Check out Our World in Data's "Why randomized control trials matter and the procedures that strengthen them". Added bonus: Our World in Data dived into their data archives to illustrate each piece with their own research. I don't know about you, but my brain far prefers abstract concepts paired with concrete examples. 

Some of the classic include:

-Why we need RCT.

https://ourworldindata.org/randomized-controlled-trials#what-are-randomized-controlled-trials

-Why causal inference is hard.

https://ourworldindata.org/randomized-controlled-trials#the-fundamental-problem-of-causal-inference

-Why we need control groups.

https://ourworldindata.org/randomized-controlled-trials#the-control-group-gives-us-a-comparison-to-see-what-would-have-happened-otherwise