Out of curiosity, isn't it a violation of copyright to make an academic article from a paid database available publicly?
Unrelatedly, the author's odd name "Michael Woodley of Menie" caught my eye. It would seem that he's the heir to a Scottish barony (Menie). I hesitate to even go there, but it's at the very least interesting that the (supposed) decline in general intelligence since the Industrial Revolution is being studied by an ancestral nobleman.
Edit: after reading the article and following up on the author's affiliation, the Ulster Institute for Social Research, this is definitely something to be taken with a grain of salt. The Ulster Institute has ties with "racialist" fringe scientists promoting what is essentially a 21st century take on eugenics. The paper is not necessarily inherently flawed because of this, but certain assumptions in it (like the uncited claim that lower socioeconomic classes have been historically correlated with lower g) seem fishy to me as a result.
This answered the question.
I do find associations with the Flynn Effect and via the Southern Poverty Law Center (a group focused on black rights and equality in the US) a biography on Richard Lynn:
http://www.splcenter.org/get-informed/intelligence-files/pro...
“I am deeply pessimistic about the future of the European peoples because mass immigration of third world peoples will lead to these becoming majorities in the United States and westernmost Europe during the present century. I think this will mean the destruction of European civilization in these countries.” —Interview with neo-Nazi Alex Kurtagic, 2011
More via Wikipedia: https://en.wikipedia.org/wiki/Richard_Lynn
The source who tipped me off to this particular article is a UK psychologist who posts some interesting and occasionally provocative material on his blog.
The source I'd picked up the item from is, it seems, quite the racist himself. I should have seen it earlier given the topics he covered and how he was doing so in his blog.
The area of research interests me, but I'm exceptionally dubious about this paper.
Oh, and Woodley appears to be the son of Michael Woodley, aerial effects coordinator for several James Bond films. The elder acquired the estate in 1995. So this doesn't appear to be old money, per se.
I've commented above on the nature and issues concerning the institute, in particular its ties with white nationalists, racists, eugenics proponents, neo-Nazis, and fascists.