Lao Tzu sees a correlation. I'm 32, and my boundaries gradually increased from "the front yard, ask to go across the street" to "the street, ask to go around the block or park" etc. I lived in urban South Minneapolis, so not rough but not gentle... enough to build habitual awareness. We were a roving pack of 5+ kids at a given time, as many as 12 or so. I addicted myself to computer screens against my parents' wishes (they prefer TV), although if not for screens I'd probably do as my vice principal said and "flip [him] a good burger someday". There were ample police and one possible abduction attempt outside with my cousin while very young, sooo...