University of Utah study of around 1000 people's fMRI
correlation vs causation - good example of the difficulties in inferring cause.
nice example of critical thinking beyond a sensationalized headline
Good example of a correlation (bookishness and myopia) that didn't hold up
Although studies are of necessity correlational, they converge on the same strong relationship between number of guns owned and deaths involving guns (accidents, deliberate shootings, suicides). What are the counterarguments?
Why correlational data from studies of the effectiveness of vitamins and other supplements are rarely supported when controlled, randomized experiments are done.
Site that shows spurious correlations between completely unrelated variables. Good examples where inferring cause and effect would seem to be pretty silly.
Good metaphor for illusory correlation and spurious causation - focus on two items over a brief interval, and it looks like one causes the other.