Availability Bias

Your mind cannot effortlessly inventory every relevant case, so it substitutes a cheaper signal: how readily examples come to mind. Vivid failures, outrageous remarks, and scandalous private lives are easy to retrieve; routine competence and uneventful success are not. You then experience recall as if it were frequency.

The deeper problem is that visibility is produced by a filter. News selects unusual disasters and quotable foolishness, while ignoring thousands of ordinary resolutions, sensible political statements, and stable celebrity relationships. Availability Bias therefore compounds Selection Bias: first the channel creates an unrepresentative sample, then memory mistakes that sample for the world.

A rare case can still reveal a severe failure, and repeated reports may identify a real pattern. The model does not tell you to dismiss vivid evidence; it tells you that vividness alone cannot establish prevalence. You still need the missing denominator and a sample selected for measurement rather than attention.