This generation’s delay in growing up is explained by economic factors rather than any innate change. Philip Cowley, Professor of Politics at Queen Mary said: "Broadly, age-related changes in the past 15-20 years have shifted upwards. However, they tend to stop at 18, including the minimum age policy brought in to restrict lottery ticket purchases last year, and the ruling in 2010 to stop young people entering tanning salons."
This was covered in the Financial Times