Sentences with phrase «whether selection bias»

It is hard to know whether selection bias is at work.

Not exact matches

Clinicians need to know whether meditation training has beneficial effects beyond self - selection biases and the nonspecific effects of time, attention, and expectations for improvement.27, 28

Granted, it's hard to tease out the selection bias of these studies; it's tough to know whether participating in these activities caused teenagers to make better choices, or whether teenagers who made good life choices also chose to participate in sports and other extracurriculars.

Evaluations of newer large - scale programs (like those in New Jersey, Oklahoma, and Texas) suffer from «selection bias» problems — we don't know whether the children enrolled in them might be different in important ways from their peers who didn't enroll.

We examined whether larger networks are more effective than smaller ones and found that, both with and without correcting for student and peer socioeconomic characteristics and selection bias, students at schools that are part of networks of three or more schools consistently outperform students at schools in networks of only two schools.

With all of their self serving, and totally biased selection of photos of «vicious» dogs involved in attacks, they make the judgment of whether or not a «Pitbull» is in the mix.

Instead of involving a choice of whether to keep or discard an observation based upon a prior expectation, we hypothesize that this selection bias involves the «survival» of climate models from generation to generation, based upon their warming rate.

This study aims: (a) to examine whether poverty predicts changes in behavior problems between 1.5 and 8 years of age; (b) to estimate potential selection bias for the observed associations.