Complete the summary using the list of words below. Choose the correct word and move it into the gap.

The benefits of humour

In one study at Australian National University, randomly chosen groups of participants were shown one of three videos, each designed to generate a different kind of [1]. When all participants were then given a deliberately frustrating task to do, it was found that those who had watched the [2] video persisted with the task for longer and tried harder to accomplish the task than either of the other two groups.

A second study in which participants were asked to perform a particularly [3] task produced similar results. According to researchers David Cheng and Lu Wang, these findings suggest that humour not only reduces [4] and helps build social connections but it may also have a [5] effect on the body and mind.