“We discovered that sleep loss acts as a trigger of asocial behaviour, reducing the innate desire of humans to help one another,” said Prof Matthew Walker, co-author of the study at the University of California, Berkeley. “In a way, the less sleep you get, the less social and more selfish you become.”
Article source: https://www.huffingtonpost.co.uk/entry/sleep-deprivation-makes-you-selfish-study_uk_6305e7e0e4b0f7df9bb537c6