Child Psychology and Development For Dummies

Height is also affected by nutrition, even though it’s usually thought to be largely determined by genetics. In fact, the average heights of men and women have increased over the past few centuries in most countries because of improved nutrition. Interestingly, two countries with similar genetic backgrounds have witnessed the evolution of huge differences in height: Today, South Korean men are about 4 1⁄2 inches taller than North Korean men.