Let's not forget to mention that the study found that among all nations studied the Germans laughed most often that is they judged the jokes presented as being more hilarious than other subjects did. Which led the researcher (Richard Wiseman) to ponder two hypotheses:
(1) the Germans have much more humour than the British like to think
(2) The Germans live in a world with not much to laugh about that's why they laugh even about the stupidest jokes.

Assuming that there is only one Richard Wiseman, Professor of Psychology, in Britain, I understand why he now studies humour. He is better known for his studies about parapsychology the results of which led him to a very skeptical point of view. Parapsychology is such a sad subject to study...

Wolfgang