Social scientists have a term for it: perceptual parity bias — the tendency to believe a group has become balanced just because it’s less unequal than it used to be. It’s closely related to the Tokenism Effect, where a small increase in representation is perceived as large or symbolic, creating the illusion that a structural problem has been “fixed” — when it hasn’t.
I had a creeping sense that I might be falling for this kind of skewed reference frame when I recently spent a couple of days at the Graphene2025 conference. The gender balance seemed unusually good — certainly better than what I’ve come to expect in these kinds of settings.
And it wasn’t just me. Legendary French physicist Annick Loiseau, a founding figure of the field, shared the same impression in a private conversation. She speculated that the shift might be thanks to the pronounced equality efforts of EU funding bodies.
I wanted to leave it at that. It felt good. And, as they jokingly tell you in journalism school: never double-check a good story.
But with too much time on a long train ride, I ended up flipping through the conference programme — curious to see what the numbers actually looked like. Here’s what I found:
Out of a total of 246 speakers, 48 were women — just under 20%.
That’s significantly higher than in many of the disciplines 2D materials research is rooted in, especially solid-state physics, which remains notoriously male-dominated.
The PhD sessions stood out: here, the representation of women averaged around 23%, suggesting a healthier pipeline. Meanwhile, invited speakers — the keynote-level names — were still overwhelmingly male. My final tally put the number of female invited speakers at just 11%.
There were also noticeable differences across countries: Spain, France, Italy, and India seemed to contribute a relatively higher share of female researchers compared to others.
So: is the cup half full or half empty?
The pessimistic reading would be that I’ve simply set the bar too low — that I’m happily surprised by representation still hovering around a measly 20%.
But numbers don’t tell the full story. Bias or no bias, I’ll still swear the tone of this conference felt different. Male speakers were more restrained — less “ra-ra” — while many female presenters took the stage with a kind of grounded self-assurance. The overall atmosphere felt generous, unforced, confident.
Still pitting optimism vs. pessimism is a false choice. If anything, I’d rather take an engineering mindset to the problem. The question becomes: how do we build on promising early results? How do we improve the system rather than just comment on it?
If I were to send one message to the organisers, it would be this:
You’ve put together an excellent conference — but don’t underestimate the influence you hold when it comes to selecting speakers. This year, the proportion of invited female speakers was at least half of what it could have been. Next year, don’t go on autopilot. You don’t have to lead the charge — but make sure you’re not falling behind.
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