Lawyers tried to cast doubt on the scientific testing procedures used by the I.R.S. in its recent audits of certain producers, including the leading producer, Progress Energy of Raleigh, N.C.
The documents had been altered in what lab officials said appeared to have been an effort to discredit or embarrass them by casting doubt on the handling of test samples.
More broadly, a powerful coalition of New York schools is contending that pretest preparation, which many believe skews the results, has become so widespread as to cast doubt on the value of the test.
That Mr Tourre was accepted casts further doubt on the suitability of the tests that the FSA uses to vet bankers dealing with hundreds of millions, sometimes billions, of dollars.
In the attack, the Italian coach, Marcello Lippi, appears settled on Alberto Gilardino at center forward, but he has shown some doubts on the wings, testing Vincenzo Iaquinta and Simone Pepe recently, along with Antonio Di Natale, Mauro Camoranesi and Fabio Quagliarella.
Our results cast doubt on the standard scope sensitivity tests in choice experiments, but also on the validity and reliability of VSL estimates based on stated-preference studies in general.
A study published last month in a journal of the American Educational Research Association casts doubt on the utility of using student test scores to evaluate teacher performance, a centerpiece of the reforms described in Russakoff's article.
However, due to the strong autocorrelation in the forward premium, which shows estimated autoregressive roots close and in some cases statistically indistinguishable from one, recent literature has cast doubt on the finite sample accuracy of these tests.
Landis, 32, has spent millions of dollars on a defense that tried to cast doubt on the scientific validity of doping tests and the procedures followed at antidoping labs.
"Without a doubt, the test results accurately reflect how seventh graders performed on the reading test," she said.
