Commonly Used Herbicide is Harmful to Adolescent Brain Function

The legality of known highly toxic herbicides is quite shocking. Paraquat, which is widely used in the US and across the world, has a lethal dose of only 10 mL. There is no antidote or effective treatment and many people have died as a result. But people don’t seem to care. A couple squirts to kill some plants is just too convenient.

Europe will soon decide whether to ban or to allow roundup (glyphosate-based herbicide) for 15 more years. I fear that this will indeed happen, despite many groups (for instance parkinson patients) fighting to ban it.

I don't entirely understand how they can draw the conclusion that glyphosate affects social perception, when it was found in 96% of the sample group. Wouldn't that make the control group for non-glyphosate too small to have any statistically significant conclusions?