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    Why women see more colors than men: The surprising science behind the battle of the sexes over hues

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    Have you ever argued with your partner over the color of a wall or a piece of clothing? If so, you are not alone. Many couples have experienced this phenomenon, where one person sees blue and the other sees purple, or one sees green and the other sees yellow. But why does this happen? Is it just a matter of personal preference, or is there something deeper going on?

    According to a new study, the answer may lie in the way our brains are wired. Scientists have found that men and women perceive color differently due to physiological differences in their visual systems. Women are more sensitive to subtle variations in hue, especially in the yellow-green range, while men need longer wavelengths of light to see the same colors as women.

    multicolored wall in shallow focus photography

    The study, published in the journal Humanities and Social Sciences Communications, used data from the World Color Survey (WCS), a large-scale cross-cultural project that collected color names and categorizations from speakers of 110 languages. The researchers analyzed how men and women assigned percentages to the categories red, yellow, green, and blue for different color stimuli. They found that women were more adept at distinguishing between subtle gradations than men, and that men tended to use broader categories like “grue” (green-blue) more often than women.

    The researchers suggest that these differences may have evolutionary origins. They point out that color vision is linked to the X chromosome, of which women have two and men have one. This means that women have more variations in their color genes than men, and may also have an advantage in detecting ripe fruits or poisonous plants. On the other hand, men may have evolved to be more sensitive to moving objects and fine details, which could help them in hunting or tracking.

    Another factor that may influence color perception is sex hormones. Previous studies have shown that estrogen and testosterone can affect the development and function of the visual cortex, the brain region responsible for processing visual information. For example, estrogen can enhance color vision by increasing the number of neurons and synapses in the visual cortex, while testosterone can suppress it by reducing them.

    These hormonal effects may also explain why some sex-linked disorders, such as autism and schizophrenia, are associated with abnormal color perception. Autism, which affects more boys than girls, is characterized by impaired social skills and communication, but also by enhanced abilities in some visual tasks, such as spotting patterns or differences. Schizophrenia, which affects more men than women in early adulthood, is marked by hallucinations and delusions, but also by altered color perception and sensitivity.

    The study’s authors hope that their findings will shed light on how sex differences in color perception affect our everyday lives. They say that understanding these differences can help us communicate better with each other, avoid misunderstandings, and appreciate the diversity of human vision.

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