Sentences with phrase «standard randomized field trial»

The study was designed as a gold - standard randomized field trial, in which students were (by means of a lottery) randomly given the opportunity to go to charter schools or not.

Not exact matches

Given differences of opinion among researchers, it is easy to jump to the conclusion that randomized field trials are not the gold standard they are thought to be.

Our results came from randomized field trials, which are generally thought to be the gold standard for research on human subjects.

I was no less enthusiastic than those standing on the podium as this was for me an opportunity to evaluate for the first time a school voucher initiative by means of a randomized field trial, the gold standard for evaluating the effectiveness of a program, the same design as the pill - placebo design used in medical research to ascertain whether pills are effective.

Based on rigorous selection criteria, the authors narrowed the field to the 19 studies — representing 11 voucher programs — that used randomized controlled trial (RCT) methodology — the «gold standard» for research.

His model predicted, in different fields of medical research, rates of wrongness roughly corresponding to the observed rates at which findings were later convincingly refuted: 80 percent of non-randomized studies (by far the most common type) turn out to be wrong, as do 25 percent of supposedly gold - standard randomized trials, and as much as 10 percent of the platinum - standard large randomized trials.»