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Aiyana Koka Willard

@aiyanakoka

Cultural Evolutionary Psychologist | Centre for Culture and Evolution | Brunel University London Researcher of religion, religious decline, spiritual beliefs, and other worldviews

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Latest posts by Aiyana Koka Willard @aiyanakoka

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IACESR 2026 – 10th Biennial Meeting

We’re excited to announce our keynote speakers:
Will Gervais • Rebekah Richert • Quentin Atkinson • Larisa Heiphetz Solomon

📍 Brno, Czech Republic
📅 1–3 July 2026 | Masaryk University

Registration open soon. Stay tuned.

#IACESR2026 #CognitiveScienceOfReligion

05.03.2026 14:53 👍 7 🔁 5 💬 0 📌 0

Can we all just agree that if your evolutionary theory of humans posits we all evolved to have the social values of 1950s American it’s probably wrong? Thanks.

03.03.2026 10:39 👍 35 🔁 13 💬 1 📌 0

We have extended the submission deadline to Feb 20th, some people needed more time. Like me. I was one of the people we needed more time 😅

08.02.2026 21:57 👍 1 🔁 2 💬 0 📌 0

We have extended the submission deadline to Feb 20th, some people needed more time. Like me. I was one of the people we needed more time 😅

08.02.2026 21:57 👍 1 🔁 2 💬 0 📌 0
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Existential security and the cultural evolution of secularisation in Mauritius Despite the central role of religion in human history and its continued global growth, an increasing number of individuals identify as secular or athe…

1/ New paper from @brunelpsy.bsky.social CCE in Evolution & Human Behavior looks at secularisation in Mauritius 🇲🇺

Nachita Rosun, @matthewmgervais.bsky.social and @aiyanakoka.bsky.social have been testing big theories outside the usual Western settings 🌏

🔗 👇

05.02.2026 14:36 👍 12 🔁 6 💬 1 📌 1
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Existential security and the cultural evolution of secularisation in Mauritius Despite the central role of religion in human history and its continued global growth, an increasing number of individuals identify as secular or athe…

New paper lead by Dr Nachita Rosun that I am super proud of! We look at religious changes in Mauritius and find that differences in religious socialisation matter the more in predicting religiosity as material security gets higher www.sciencedirect.com/science/arti...

05.02.2026 12:44 👍 6 🔁 2 💬 0 📌 0

Call for papers closes tomorrow Feb 6th! iacesr.com/conferences/

05.02.2026 12:36 👍 3 🔁 2 💬 0 📌 1

We’re organizing IACESR 2026 in Brno (July 1–3) — CFP closes Feb 6.

If you work on cognitive or evolutionary approaches to religion, we’d be very happy to welcome you in Brno :)

13.01.2026 14:09 👍 3 🔁 2 💬 0 📌 0
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📢 Talk announcement bringing together @brunelcce.bsky.social and CCN research centres! 📢

Dr Conrad Hackett (Pew Research Center) joins us on 📆29th Jan, 2-4pm to unpack the latest global religion survey and how it diverges from Pew’s influential 2015 projections 🌍📊

Open to all! 🔓

12.01.2026 11:42 👍 5 🔁 5 💬 1 📌 4
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Conferences - IACESR We are delighted to announce that the 10th Biennial Meeting of the International Association for the Cognitive and Evolutionary Sciences of Religion (IACESR) will be held at Masaryk University in Brno...

IACESR call for paper closes Feb 6th. Come join us to talk about the cognitive and evolutionary science of religion in Brno in July! iacesr.com/conferences/

06.01.2026 17:56 👍 6 🔁 6 💬 0 📌 2
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Three evolutionary radiations shaped the evolution of global religious diversity | Evolutionary Human Sciences | Cambridge Core Three evolutionary radiations shaped the evolution of global religious diversity - Volume 7

New paper: Three evolutionary radiations shaped the evolution of global religious diversity

15.12.2025 22:09 👍 28 🔁 11 💬 0 📌 1

😂

06.12.2025 22:30 👍 0 🔁 0 💬 0 📌 0

Sometimes I forget that mummers are a thing, and then I remember and it fills me with joy all over again.

06.12.2025 10:00 👍 0 🔁 0 💬 0 📌 0

But Simon, it’s a light hearted Canadian tradition full of joy and cheer! 😂

06.12.2025 09:00 👍 1 🔁 0 💬 1 📌 0
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I see your Krampus and Mari Lwyd, and raise you Newfoundland Mummers as the most terrifying Christmas tradition 🎄❄️🧟‍♀️

05.12.2025 07:56 👍 9 🔁 1 💬 2 📌 2

This video was made about our folk medicine project. It talks about our recent PNAS project, and also this study we did in Mauritius www.tandfonline.com/doi/full/10....

03.12.2025 09:24 👍 6 🔁 3 💬 0 📌 0

Fun fact the [donkey] in the paper was added because PNAS did not want us to use ‘ass’ from the original translation 🫏

02.12.2025 13:50 👍 1 🔁 0 💬 0 📌 0

On a roll with papers this week. PNAS paper with @michealdebarra.bsky.social giving some evidence to the idea that people turn to the supernatural because of uncertainty about causal processes. BONUS of curing whooping cough with donkeys and warts with snails 🐌

02.12.2025 13:48 👍 15 🔁 8 💬 1 📌 0
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Belief as explanation: a motivation-based theory of agency and anthropomorphism in religious belief Supernatural agent beliefs are ubiquitous across cultures, yet many theories aimed at explaining this fact have not held up to scrutiny. The most famous of these, the Hyperactive Agency Detection D...

1/ 🎙️ New paper by Dr Aiyana Willard argues it’s time to retire HADD = “we’re hardwired to see agents EVERYWHERE” and replace it with something that *actually* fits the evidence 🪦➡️📚

@brunelpsy.bsky.social

🔗 Read it 👇

28.11.2025 12:37 👍 10 🔁 9 💬 2 📌 1

I wrote a paper on my least favourite theory of religion: HADD
It’s good, you should read it! 😆

28.11.2025 13:18 👍 18 🔁 4 💬 0 📌 2

It’s a shame Maya isn’t on here. I would like to be embarrassing.

18.11.2025 15:42 👍 0 🔁 0 💬 0 📌 0
How a McGill undergrad’s summer research project became a paper in a prestigious journal When then-McGill undergraduate Maya Willard-Stepan cold-emailed a professor asking to help with their research, she didn’t expect the project to end up in the Nature-partner journal npj Urban Sustaina...

This is my wee baby cousin who I used to babysit. The hippy Willards are just out there spawning scientists 😆 www.mcgill.ca/channels/art...

18.11.2025 15:41 👍 4 🔁 0 💬 1 📌 0

I am with Abbey. Let chaos reign. Besides, your vibe is really more of cultivating shock when people find out you are in fact a professional, and you wear that well.

13.10.2025 13:49 👍 2 🔁 0 💬 1 📌 0
THAMES mnemonic for reading science:

T
Theory
•What BIG IDEA is the focus?

H
Hypothesis
•What SMALLER IDEA is actually getting tested?

A
Assumptions &
Alternatives
•What needs to be true to connect T:H?
•What else could explain results/predictions?

M
Methods:
Measures & Manipulations
•Were methodological tools validated?
•Evidence that we’re measuring/manip what’s claimed?

E
Evidence &
Ethics
•Are claims calibrated to EVIDENCE? Is EVIDENCE appropriate?
•ETHICALLY sound in practice/intent/implication/application?

S
Sampling
Statistical Model
•Who was studied? Who are claims about?
•Do stat results match verbal ideas?

THAMES mnemonic for reading science: T Theory •What BIG IDEA is the focus? H Hypothesis •What SMALLER IDEA is actually getting tested? A Assumptions & Alternatives •What needs to be true to connect T:H? •What else could explain results/predictions? M Methods: Measures & Manipulations •Were methodological tools validated? •Evidence that we’re measuring/manip what’s claimed? E Evidence & Ethics •Are claims calibrated to EVIDENCE? Is EVIDENCE appropriate? •ETHICALLY sound in practice/intent/implication/application? S Sampling Statistical Model •Who was studied? Who are claims about? •Do stat results match verbal ideas?

Teaching a fun science & critical thinking course this semester.

Trying out THAMES as a handy mnemonic for what to look for in evaluating science papers & such (obvs not all are as relevant for every paper)...

10.10.2025 09:11 👍 51 🔁 18 💬 3 📌 4

DO IT.

13.10.2025 08:54 👍 1 🔁 0 💬 2 📌 0
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Home - Healing starts when people bear witness Outcry Witness is the platform where survivors of sexual violence keep an anonymous record of their experience, always under their control.

🧵 1/ Excellent and impactful work from CCE second in command @loraadair.bsky.social published in the New Metro over the weekend about Outcry Witness

It’s an anonymous website where sexual-assault survivors can safely tell their stories.

No names, no pressure. Just a record in their own words 🗣️🛡️

13.10.2025 07:55 👍 13 🔁 9 💬 1 📌 1

First day of school, grade 33? (I think?)

23.09.2025 08:18 👍 1 🔁 0 💬 0 📌 0

I am soaking up all the beauty and nostalgia on this trip - it gets more and more the closer we get to Alberta. I come to the west coast most years but I grew up in Alberta and I haven’t been back in maybe 10 years .

03.09.2025 16:50 👍 1 🔁 0 💬 0 📌 0

Yes! Here!

03.09.2025 16:48 👍 2 🔁 0 💬 0 📌 0
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I am on vacation in the place I grew up. I used to come here (meeting of the waters, Illecillewaet) everytime we drove through the rockies when I was a kid. At least once a year. Still as impressive as I remember it.

03.09.2025 02:45 👍 29 🔁 3 💬 3 📌 0