Are University Graduated WEIRD people psychologically different to Generally Educated WEIRD people? A recent question was asking around the subject of WEIRD psychology [WEIRD standing for Western, Educated, Industrialized, Rich and Democratic — an acronym seemingly coined by Henrich, et al (2010)] and reading the Wikipedia article to find that out and get some understanding of the subject made me wonder if the concept of WEIRD psychology could have merit.
For the purposes of focus, let's take one aspect of the WEIRD category — Educated.
Would a person in Western society, educated at a lower level, be psychologically different to someone in Western society educated to the highest possible level?
To be precise in my meaning regarding psychological differences, ignoring the systems of education and assuming:

nobody in either group are suffering from any psychotic disorders,
both groups have the same powers of observation, and
both have equal access to any required reference materials and advice from experts,

is there empirical evidence to suggest that one of the groups cannot form a sound and reasonable argument based on their knowledge of the world around them?
Maybe I am not using the correct search criteria in Google but I can't seem to find any.
References
Henrich, J., Heine, S. J., &amp; Norenzayan, A. (2010). The weirdest people in the world?. Behavioral and brain sciences, 33(2-3), 61-83. doi: 10.1017/S0140525X0999152X. PMID: 20550733.
A lot of psychological research takes place in societies that are Western, Democratic, and Industrialized, and that from a global/historical perspective are relatively Educated and Rich.
Of course, within those societies, people vary in their level of education and their socioeconomic status (e.g., wealth, income, financial security, earning potential, etc.).
And education and socioeconomic status have numerous correlates with psychological variables and life outcomes.
E.g., educational attainment is positively correlated with life time income, intelligence, and political views.
There are two obvious explanations for these processes:

Education changes a person. They acquire general and discipline specific skills. They get exposed to different experiences, career opportunities and so on.
Psychological characteristics predict interest, access, and success in higher education. For instance, more intelligent people are more likely to be granted access and succeed in higher education.
Third variables. Factors like family socioeconomic status predict psychological characteristics as well as the probability of pursuing higher education.