For example: this past week at work I was the only one there, as the rest of the company was on shut down. Whenever I would walk the halls to go smoke outside, I constantly had chills run down my spine when I thought about what could be around the corner or behind that closed door. I have to repeatedly remind myself that I am being an idiot and the shit in my head is just that: my mind playing tricks on me.
From an evolutionary standpoint, wouldn't the human animal be wired for survival instinct? If so, being alone in a building where you know that nobody can help you were you attacked,coupled with reminders from the scary stories--be enough to put you on edge walking through dark hallways?