16/06/2026
🏳️🌈 Why Biology is Not Simple Arithmetic: A Look at S*x and Gender 🏳️🌈
Since it's Pride Month, the beautiful and infinite complexity of human identity is rightfully taking center stage. 🏳️🌈🥳🎉🎈 We are celebrating the vast spectrums of human s*xuality, the fluid nuances of romantic attraction, and the incredibly diverse ways we experience and express ourselves. 🎨🖌️ Naturally, grasping such multifaceted biological and sociological realities requires a certain degree of cognitive flexibility and a certain level of luminosity. Traits that, like everything else in human biology, are not universally distributed. For some, grappling with complex phenomena is simply too heavy a cognitive lift, leaving them hopelessly confused even about the most rudimentary concepts.
So, for the benefit of those struggling to keep up and for the rest of us who want to refresh our memories, let's start with the absolute basics: 👨🏻🏫📚 The term "s*x" refers to the biological distinction of female and male. "Gender," on the other hand, refers to the roles and identities we adopt in society, as well as to systemic concepts such as equality. Because gender is a multidimensional composite rather than a simple toggle switch, it is not even close to a binary phenomenon. Instead, it is a fluid spectrum spun from cultural expectations, personal expressions, and internal psychological experiences. And frankly, not even biological s*x is strictly binary. First of all, human biology features natural deviations from the standard XX and XY chromosomal combinations, such as Klinefelter syndrome (XXY), Turner syndrome (X0), and XYY syndrome. Furthermore, even the standard XX and XY chromosomes exhibit a wide range of physical variations, driven by fluctuating hormone levels, gene activation, and cellular receptor sensitivity. 🧬🎨🖌️
Biology is incredibly diverse, and sometimes the human mind (the neurohormonal system) and the physical primary and secondary s*x characteristics (go**ds, genitalia, body shape, etc.) misalign. The main mechanism for this lies in the staggered timeline of human fetal development. During the first trimester in the womb, hormones like testosterone drive the masculinization or feminization of the ge****ls. However, the brain's s*xual differentiation occurs much later, primarily in the third trimester. Because these systems develop in different physiological windows, the physical body can develop in one direction while the brain develops in another. Biology is not simple arithmetic.😉🌿
We can observe that in mental differences between cisgender males and females. Herlitz and colleagues (2026) recently tackled this diversity by analyzing the combined power of multiple small s*x differences across cognitive performance, personality traits, and interests. Here is what they found:
➡️ Cognition: Females generally outperform males in verbal fluency, episodic memory, face recognition, and emotion recognition. Males, conversely, perform better on spatial tasks, such as mental rotation and line angle judgments.
➡️ Personality: When examining personality traits, women are more outgoing, more inclined to please others, more careful, more emotionally expressive, and more open-minded. Men are more reserved, assertive, carefree, less emotionally expressive, and conservative.
➡️ Interests: The study revealed a significant divergence in everyday orientations, with males showing a greater interest in "things" and females showing a greater interest in "people".
While most of these individual psychological differences are small, the researchers found that they add up. When combined, these measures correctly predicted whether an individual was male or female in 80% of cases. However, these findings represent differences in averages. The distributions of these traits largely overlap between men and women, indicating that a significant percentage of men and women share identical cognitive and personality profiles.
So, the study's results dismantle the myth of a rigid psychological binary. While we can predict biological s*x with 80% accuracy by combining a massive web of data on mental traits, there is no such thing as a purely "male" or "female" psychology, no clear dichotomy in s*xes from a psychological perspective. Human mental traits exist on heavily overlapping distributions; every single human mind is essentially a unique mosaic. Recognizing this immense variation makes the acceptance of different gender identities a matter of basic biological literacy. When we look at the data, it becomes clear that an identity or expression that doesn’t perfectly align with one's birth s*x isn’t a psychological malfunction; it is a completely natural, predictable outcome of our highly diverse human architecture
Circling back to those who find this multifaceted reality too heavy a cognitive lift, I want to call for a bit of compassion for the aggressors in these cultural debates. We must recognize the psychological mechanisms at play: the people who are the most fiercely engaged in dictating what other people should do with their bodies and identities are usually the ones wrestling with the deepest, most unexamined personal problems themselves. Their aggression is often a direct consequence of the profound frustration of being unable to grasp or accept their own complex identity. They pour an exhausting amount of effort into conforming to rigid expectations, constantly trying to be something they are not. Naturally, they are absolutely furious when they see others granting themselves the freedom to simply exist authentically. ☀️🍃
It has repeatedly been shown that most psychological s*x differences are small, with largely overlapping distributions. This study examined whether multiple small s*x differences—across cognitive performance, personality traits, and interests—can collectively distinguish between males and female...