Therefore, I'm really happy to see this article because it claims that, not only do the college educated make more money than non-college graduates, the wage gap is growing in favor of the college educated.
What should we conclude about these contradictory claims? Can they both be correct?
Actually, they can both be correct (and they can both be wrong).
First of all, the first link is about Canada and the claims are based on Canadian data while the second article is about the US. There could be differences in US and Canadian labor markets that narrow the college/non-college wage gap on one side of the border and increase it on the other.
Second, one needs to look at time frames, ages of the workers being considered, means versus medians, etc. to make sure that both claims are really about the same thing. I didn't take time to chase down details on the Canadian article, but I did a little digging on the US article. It refers to a study by the Economic Policy Institute in Washington DC. I found the EPI but could not find this particular study. Instead I found the following studies:
- August 2011: College graduates losing ground on wages. Of course, that was right in the midst of a terrible recession.
- May 2014: Too many college graduates can't find job. This is much more recent.
These two articles seem to agree with the Canadian claim rather than the US claim and this was the agency referenced for the US Claim! Weird To make it more confusing, there's this article about an MIT economist who says that, at a median income level, college graduates are doing much better than non-college graduates. This article also refers to the EPI study and I can't find.
More contradictory claims, possibly from the same research group. I leave it to readers to do their own research and figure out what's going on, but here are some things to consider:
- The current college/non-college income gap between 25 year olds is a completely different question than the current college/non-college income gap between 50 year olds or the lifetime earnings gap at any age.
- Historical data on income gaps (current gap or lifetime gap for any age group) are different questions than predicted income gaps.
Read some of the links and see if you can figure out what data and what questions these "contradictory" claims are addressing.