Publication bias. Perhaps unsurprisingly, the scientific literature is full of positive results. Null or negative results have traditionally been hard to publish and are often relegated to abandoned hard drives, despite the fact that they represent valuable knowledge claims. Research users looking for evidence get a distorted view, which — like... See more

they found that approx -imately half the time, the older study wouldn’t replicate (and even when it did, the effects were often a lot smaller than in the original claim). Confidence in the psy -chological literature started to waver.

Funding agencies need to stop funding under-powered studies using sloppy statistical methods and small group sizes. This will mean that fewer groups will receive funding. However, without some pain there will be no improvement. Labs should be forced to adapt to a harsh new reality that they will only get funding if they conduct high powered,... See more