If the reason Why Men Don't Listen and Women Can't Read Maps is genetic, then one of the genes in the Y chromosome is to blame and in theory could be identified.
Correct or incorrect?
"Blame" is a strong word. The human Y chromosome has only a few dozen protein-coding genes. One of the most important, for males anyway, is SRY, the sex-determining region. This is a transcription factor that is responsible for modulating the expression of other genes; those genes need not be on the Y chromosome. SOX9 for example is itself a transcription factor, is upregulated by SRY, and is found on chromosome 11. Most of the genes associated with maleness are found elsewhere. Moreover, once the testes form, they can be potent secretors of hormones that cause a number of physical changes. So is SRY to blame, or SOX9, or the testes? It depends on how direct you want your genes to be. If you're blaming SRY you're not wrong, but at that point you might as well blame fate.
Imagine a culture where girls are chastised for taking risks, and heavily punished when they take risks and fail, but where boys are encouraged to take risks, and praised highly when things work out their way.
Wouldn't you expect that when put in a situation where such individuals are supposed to make a high stakes action based on risk assessment, that those girls would show much higher stress levels than the boys would?
Big biological difference, having nothing at all to do with the Y chromosome,or genetics at all. Just the environment.