When is a Longer Wait Better than a Shorter Wait?

Imagine that you call your local GP practice and are swiftly placed on hold. You are about to hang up, but you are informed that you are fifth in line. Expecting a short wait, you decide to stay on the phone. Five minutes later, you are told that you have progressed to fourth. After another […]

Omission Bias, the Trolley Problem and COVID-19 Vaccine Uptake

Imagine that you are standing beside a train track. A group of five people is crossing the track. Suddenly you notice a train barrelling uncontrollably towards the group. There is a fork in the track ahead of the group. Beside you is a lever, which you can pull to divert the train at the fork, […]

False Positives and False Certainties of Covid-19 Test Results

Imagine that you have recently been asked to take a Covid-19 test – maybe you are a resident of Lambeth, a school pupil, or about to travel abroad. You receive a message with your results, which reads as follows: ‘Your recent coronavirus test has come back positive’. Take a moment to consider how you would […]