If he had, he would have found a growing trend of leniency.
A study in 1979 by Peterson found a trend towards low rates of left-handedness in science students.
Professor Fornell found a similar trend during a recession in northern Europe about a decade ago.
Results to date have also found a trend toward a reduced overall death rate, which has not yet reached statistical significance.
He found a trend for all such tests to correlate positively with each other, which is called a positive manifold.
Researchers found a general trend towards more contemporary authors.
They found a trend of 0.13 C/decade, in reasonable agreement with surface trends.
They say drastic steps have been taken to lift standards and a monitoring visit by inspectors last September found a "clear trend of improvement".
A 2010 study found a declining trend in the rate of traumatic brain injuries among cyclists from 1988-91 to 1996-99.
The study found a similar trend over the last six years.
