25-54 is a huge range. These days, 25-35 or 40 could very well mean no family obligations (and thus greater flexibility wrt pay, location, travel). 35-54 likely

25-54 is a huge range. These days, 25-35 or 40 could very well mean no family obligations (and thus greater flexibility wrt pay, location, travel). 35-54 likely means family. The splits there would be interesting to see (not having looked at the article yet).