http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna...
There is the study she mentioned where people 'offload' their thinking to an expert.
Personally I don't think that her inferences from the study are meaningful. If you wander into a doctor surgery, have some tests and then some serious mega expert has to get involved then that is very different to the situation where you are openly seeking advice with your finances from an expert.
The financial expert is likely to profit from advice given whereas (in the UK) the medical expert actually wants you to get well. Furthermore if the expert is thrust upon you due to circumstance that is very different to seeking out an expert. The value of an expert opinion also differs depending upon how deferential one is. Doctors are as good as it gets for 'pillars of society' whereas financial experts are down there with used car salesmen. Conclusions drawn from those seeking financial expertise don't relate to the wider field of what goes on with 'experts'.
I have read books by Noreena Hertz in the past, expecting Naomi Klein 'No Logo' grade stuff yet I never felt her work quite hit the mark. In my opinion she was to the anti-globalisation discussion what Cliff Richard was to rock 'n' roll - not really the real deal. Again, this article disappoints.