Maybe next they can study which type of drain cleaner is preferred by gender status.
***Maybe next they can study which type of drain cleaner is preferred by gender status.***
Probably already done. Remember the book THE HIDDEN PERSUADERS by Vance Packard(1957), about tests done to make you want to buy.
And “subliminal advertising” in which a flash of a product during a program makes you want to buy it.
https://www.bbc.com/news/magazine-30878843
I thought fairies could fly.....