In other words, in day to day life, any decision you make, what causes you to make those decisions?
Ok, here's the problem with this.
You can't take sociological principles and apply them to any one individual in any one circumstance. Gets rather deterministic.
Can be quite absurd as well. As if you applied the statistic "Americans have 2.2 children per household" to your neighbor who has only two children, you could hardly describe them as below average.
And we could extend this to biology as well. What was this guy's brain chemistry at the time of the incident? Did he have low blood sugar? Maybe that was a factor in his decision as well.
[Note to self: dropped pronouns in this post. Strange. . . ]