The “marry your cousin” meme reduces IQ to 72, almost 2 st devs down, casting believers into mental weakness from which escape is hard.
Replying to @JamesPsychol
.@JamesPsychol (2/2) ...a 0.8-1.3 decline in iq scores in 1st cousin progeny and 2.6-5.9 in double-1st cousin kids. dunno type of test.
7:20 PM - 26 Oct 2014
0 replies
3 retweets
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.