ACW,
By "due" theory I'm referring to the tendency to irrationally believe that just because something hasn't been happening lately it is more likely to happen because it's "due". It could be anything really, a hitter or pitcher on a slump, straight up results, ATS results, over-under, or any trend at all.
There is a (seemingly) equal tendency to irrationally believe in streaks because some people expect results to alternate more than they do. When they see a streak they say to themselves "this couldn't be just random" so they assume it has significance and therefore bet on it.
Of course there could also be perfectly rational reasons to believe in either theory -- the "due" theory because of umpires or refs. manipulating outcomes or the "streak" theory because of legitimate emotional or other human factors which cause de facto good periods and bad periods.
My question does NOT ask which theory is better to follow in sports betting. My question DOES ask which of the two philosophies does Joe Public use more often for irrational reasons!?
If the question is unclear for sports betting, let's consider instead on games of pure chance like craps or baccarat where the "due" and "streak" theories are obviously irrational. Is there a psychological tendency for the average player to favor one or the other?
I'm not looking for a handicapping angle here (at least not directly). I just want to better understand the average bettor's psychology.