国が体罰を禁止することによってどんな変化がおこるか？（英語）

What Happens When A Country Bans Spanking?

https://www.npr.org/sections/goatsandsoda/2018/10/25/660191806/what-happens-when-a-country-bans-spanking

Now a new study looking at 400,000 youths from 88 countries around the world suggests such bans are making a difference in reducing youth violence. It marks the first systematic assessment of whether an association exists between a ban on corporal punishment and the frequency in which adolescents get into fights. And, says Frank Elgar, the study's lead author and an associate professor at the Institute for Health and Social Policy at McGill University in Montreal, "The association appears to be fairly robust." The study appeared in the online journal BMJ Open.

88カ国の40万人を対象とした研究によると、体罰の禁止は若者の暴力を減らすことにつながる可能性があるとのこと。

The association held true even after accounting for such factors as the differences in the wealth of the countries and the nation's homicide rates, said Elgar. Even so, Elgar cautions, the study shows a correlation only, not a cause and effect.

"It could be that bans come into place in countries that have already generally accepted that spanking is not the best discipline method," he said, or there may be other cultural factors involved. "We haven't answered with certainty" the impact of the bans, he says, noting that more research is needed.

ただし、これはあくまで体罰の禁止が暴力の減少へ影響している可能性があるだけで、原因と結果のようなものではない、とも。

まあ、そりゃそうだろう、というか体罰の禁止が暴力の減少つながっている面はゼロと言わないまでもかなり少ないのではないかという気もする。ここらへんは検証が非常に難しいとはおもうが。

このニュースを聞いて思い出したが、人類全体の暴力性が減っているという話は、周知のごとく、スティーブン・ピンカーが『暴力の人類史』（原題はThe Better Angels of Our Nature: Why Violence Has Declined）で取り上げたテーマ。