Yes, I understand that. But also from the article: > Participants with higher levels of chronic loneliness at baseline reported less craving for social contact

Yes, I understand that. But also from the article: > Participants with higher levels of chronic loneliness at baseline reported less craving for social contact after 10 hours of isolation Based on what the article states I guess this is similar to people that react differently to fasting; those that are used to loneliness for whatever reason (In my particular case I understand it to be my "natural" state) are better prepared to go through this. I guess the idea was to be able to _really_ measure the effect of being alone in the least harmful way so they went all in (Not even allowing the participants to read) trying to make the time of the experiment as short as possible.