Watch
Research bias 0:56
A 56-second explainer of Research bias, narrated over the same demo you can try yourself.
Try the interactive Research bias demo
What this video covers
Research bias is any systematic influence that pushes a study's results away from the truth - not random error that averages out, but a consistent lean introduced by how you recruit, ask, observe or interpret. It's not a single mistake but a whole family of them, lurking at every stage of research, and the first defence is simply knowing where each kind tends to strike.
Laid out by stage, the biases stop being a vague worry and become a checklist: this one attacks your sample, that one your questions, another your reading of the results. You can't remove them all, but you can see them coming - and a bias you've named is one you can design against.
