He plotted on a logarithmic scale, going from 100 deaths per 100,000 people per year, which was approximately the rate of homicide in the Middle Ages. And the figure plummets down to less than one homicide per 100,000 people per year in seven or eight European countries. Then, there is a slight uptick in the 1960s. The people who said that rock 'n' roll would lead to the decline of moral values actually had a grain of truth to that.
継ぎ合わせました 対数スケールでプロットすると 年間に10万人あたり100件の殺人という 中世の代表的な値から始まりますが その数字はどんどん低下して ヨーロッパ諸国では 年間に 10万人あたり１件以下まで減ります そして 1960年に少し上昇が見られます ロックンロールが道徳的価値観を下げるという指摘は