That is so cruel!
I know this is about psychology and not food, but it is no surprise to me that people would choose the non-organic. Why? Because modern commercial fruit is selectively bred to be sweeter than it would once have been in the wild. Modern apples are basically sugar and water. We evolved to seek out sweet things when they were rare in the wild, because they were an energy source. Evolution has not caught up with modern food production methods, so we still go for sweet things, when the excess of sweetness which is now available to us is bad for us.
The banana test was the true psychological test. Yes, we all have preconceptions. I am speculating here, but I assume that we must have evolved this way because in some way it was good behaviour for survival. We learned to pre-judge lions, for example: the b*st*rds will always want to eat you, so we acted accordingly. This can even explain racial stereotypes, when different groups of people spend more time making war on each other than making friends. It was a competition for survival when resources were scarce.
With modern "civilisation", it can obviously catch you out, because we are not living "natural" lives by any stretch of the imagination. So, yes, a good thing to be self-aware of.
EDIT: Agriculture is probably only about 10,000 years old, which is an eye-blink in evolutionary time. Before that, we were hunter-gatherers. Pastoralism was perhaps an intermediate phase. Anthropologists estimate that average health (of survivors) actually went down after agriculture became established, even though population sizes increased dramatically.