The link between height and earnings is well established. Studies in the US have shown that people earn an extra £500 a year for each additional inch in height. Now, here’s the same research, but this time for babies.
You can see this principle informally on any urban underground line as it travels rapidly between areas of differing affluence. As the train moves into the more affluent areas, the passengers boarding the train get significantly taller.
A note of caution: This type of research only shows an association, it doesn’t mean that one thing causes the other. So don’t put your children on the rack – unless they’re really annoying you.
→ From BBC News