This is pretty much my plot to a short story I've called 'Evil Dead in space': Mars pioneers more than likely to go bat$h!t cray cray (or..crazy. which ever)

I'd just like to start off by saying that since its announcement I've been pretty geared up about our mission to mars. I think that its wild, innovative, ballsy, and a step towards our expansion of the stars. When the project/mission/whatever-its-called were made public I'm not going to lie I applied, and it was EXCITING. Not to mention I was going through some stuff and wouldn't have minded leaving Earth and never coming back (double bonus!) but in all seriousness...... new things have come to light
Lately the project is facing scrutiny as an article was just released detailing the more than likely (in science we call that probable) chance that these brave souls will go insane or suffer from some (if more than some) psychological illnesses. Continue reading though for more depressing info! (quite interesting I say)

Taken from Popular Science's article:

The combination of utter social isolation, eternal confinement in a tiny Mars-One-constructed habitat, the 24-hour surveillance of reality TV, and a lack of mental health services will converge to drive the few dozen people selected to die on the red planet completely bonkers. Even astronauts who know they're coming home eventually can become depressed and anxious in the lonely vacuum of space. Imagine being stuck in a tiny survival pod with only a few people, with transmission delays impeding your ability to keep in touch with people on Earth, unable to travel freely outside on the freezing, barren dustball that is the Martian surface. Forever. Until you die, going down in history as one of the first boldly idiotic explorers of a new world.
"Mars One is either ignoring the psychological consequences of colonisation or failing to disclose them," the Guardian notes. "Either way, if their plan goes ahead – and for the sake of the colonists we might hope that it doesn't – then Nasa's manned mission in the 2030s may well be dubbed Mars Rescue." Until they send a team of psychotherapists, best to explore from home, for now.

so yeah.... there ya have it. Potential nutcases in a tin-can more than 5 months away (journey wise) so what could go wrong? The best part is the MARS company already knows of these issues and is candidly trying to blow them off by selecting the 'right' type of people (even though I'm sure you can't prepare against mental stress and psychological crackdowns...but I don't know that for sure). Check this out:

On top of these concerns, Martian colonists will face extreme psychological conditions. Mars One claims to have discussed its plans"with experienced and respected psychologists" but doesn't name them or refer to any supporting evidence. At the same time they have called for applicants who are resilient, adaptable, curious, trusting and creativebut without saying why these particular traits are the most important, how they will be measured, or how the standards for selection will be set. Even Professor Raye Kass, who appears to be one of their few advisers on mental health issues, offers little more than anecdotes as evidence for the psychological feasibility of the programme.
Existing research suggests that the colonists will face at least four major psychological challenges. Individually, each of these is serious enough to raise a red flag. In combination, they are a disaster waiting to happen.

Read the two article HERE and HERE