Shopping as foraging psychology? It’s fascinating.
That’s why more men than women are colour-blind.
The genes for colour vision are located on the X chromosome, so women have an extra copy to compensate for deleterious mutations.
That’s also why women are more sensitive to hues containing pinks, reds and yellows than men. They’re the colours that correspond to ripening fruits and vegetables. And, coincidentally, look good in cashmere too ;o)