As science now can explain these phenomena, superstition
decreases. BTW, Ignorance is the mother of Superstitions, and
Superstition is the mother of religions.. Falsely assuming a cause
and effect. If you kick a goat on your way to school and get an F
on your test, and it happens again, you might assume kicking goats
is bad luck. But it's more likely that you weren't prepared for
either of the tests.
Superstitions basically start with cause and effect, or at least a perception of it.
For example, you have a big soccer game, and just before the game you accidentally put your socks on inside out.
One of your team mates tells you it is bad luck to take them off and put them on right so you leave them and you have a fantastic game. Your team wins and you score a goal as part of that win. There is a germ of an idea that one thing effected the other.
The next game someone says something about your inside-out socks being lucky and sort of as a lark you put them on inside-out again. The game goes well, you score a goal and your team wins. The idea gets reinforced and it spreads a bit.
By the third game a couple of your buddies have decides to wear their socks inside-out too and the winning streak continues. Now the idea is really spreading and being reinforced.
Thereafter most of your team is wearing their socks inside-out and you are still winning games, until one day you think, "Heck, this is silly, I don't need to wear my socks inside-out to win." You don't wear the "lucky socks" and the law of averages catches up with you and the team looses.
Everyone notices you didn't turn your socks inside-out and the team lost. There it is, the perception of cause and effect and the "superstition" is born.
I'm betting the following game everybody is wearing their socks inside-out and if you should win, the superstition gets stronger.