But most studies blame lagging productivity growth, not world trade.

The study blames the laws for the increase in prison spending.

The study blames the loss of animals on increased human settlement in and around the reserve.

A recent study blamed alcohol for more than half the deaths (52%) among Russians aged 15 to 54 from 1990 to 2001.

A 2009 study blamed alcohol for more than half the deaths (52%) among Russians aged 15 to 54 in the 90ies.

Throughout the 1970s and 1980s, the Committee's biannual studies consistently blamed the Fed for contributing to the inflation of that period.

The study blamed the disruption the deals cause in the labs.

A federal study released late last month blamed "risky driver behavior or poor judgment" for 87 percent of fatal crossing accidents over the last decade.

The study also doesn't blame Alzheimer's disease on sparse social networks.

Both studies blamed certain forms of program trading for exacerbating the plunge in stocks last October.