Science is incredible, but not all studies are reliable. In fact, they frequently aren't. So how can we tell when a study is trustworthy? Here are 14 signs to look for (for studies involving humans): 1) Large: a reasonably large number of study participants (20 per group is usually too small - the sample size should be large enough to give the study the power it needs to have a good chance of detecting an effect if the effect is indeed real) 2) Controlled: if the study is making claims to...