If you read the paper you'll find that the conclusion posted here is absolute nonsense. Kids in poverty had average numbers 0.4-0.5 standard deviations below th

If you read the paper you'll find that the conclusion posted here is absolute nonsense. Kids in poverty had average numbers 0.4-0.5 standard deviations below the mean. The authors didn't make any attempt to disprove the simple and obvious biological explanation: poor parents often had genes making them dumber, more impulsive low-grey-matter-havers that they passed on to their kids. I'll bet you Syrian refugee kids don't exhibit anywhere near such a large gray matter problem.