Dan Skeates, co-founder of Cool to be Kind, completed a psychology degree in 2019. His dissertation concentrated on homelessness and was entitled “Rough Sleepers: the causes, their identity and Housing First”. Here is a link to this very informative piece which makes for very interesting reading.
https://www.c2bk.co.uk/wp-content/uploads/2019/09/Dan-Skeates-Dissertation.pdf