This has been posted by a member on the PsychCentral website. I thought it might be of some interest to members here on NT as well:
Western University in London, Ontario, Canada is conducting a huge worldwide sleep study which volunteers can help with online.
Here is a CBC article on the study:
'World's largest sleep study' seeks online volunteers - Health - CBC News
And here is a link to the study questionnaires, for anyone interested:
World's Largest Sleep Study | Western University & Cambridge Brain Sciences