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Imagine a man - born, live, die, in a shoebox (and all his friends too). His universe is a constant air-conditioned 8x13x5. What does that do to his perspective, values, science...?
Well he must have some knowledge of a world outside of his shoebox, because obviously he's getting food from somewhere and healthcare needs are being met. So I'd imagine he'd feel very resentful and confined and wondering what he'd done to deserve such a fate.
He'd be full of imaginative ideas, to be sure, and maybe even develop a sense of intuition beyond what people who are fed information all the time ever are able to develop. And I'm sure he'd be unable to form any real sense of belonging or empathy. Other than that - who knows what could happen.
If all hia friends are stuck in this box with him as well, theres a good amount of psychological studies pointing toward they will all try to kill each other within 6 months to a year, possibly less.