Yes, I read it. This part particularly:
Whether this approach could be a practical way to raise school achievement on a large scale remains unknown.
Amazing that, isn't it? Well... not really, given it's theoretical nonsense.
Here's a paper for you that explains the bleeding obvious.
http://www.academicjournals.org/article/article1379765941_Lacour and Tissington.pdf
The paper you links proactively blames the student for not achieving, which is horse manure. There's a poverty-based glass ceiling for academic achievement that barely needs explaining - if you don't have the resources, you're not in a fair race with the advantaged in society.
So that gap needs closing, and not through some pseudo-scientific "mindset" drivel.
The reason I call it the "typical" Tory mindset is simple - the belief that the blame for underachievement rests with the person and not the situation; this blind belief that anyone can rise from adversity if they try hard enough. Yes,
some might do so, but to flagrantly ignore the socio-economic disadvantages the poorest in society have to actually attaining that achievement is ridiculous.