Themis Efthimiou
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themisefth.bsky.social
Themis Efthimiou
@themisefth.bsky.social
Quantitative Researcher | Psychology PhD | R & Python
📢 New paper out in Behavior Research Methods!

With @cjcrompton.bsky.social we introduce duet, an R package for analysing dyadic motion data from OpenPose.

It simplifies data wrangling, kinematics, & synchrony analysis of social interactions.

Paper: doi.org/10.3758/s134...
duet: An R package for dyadic analysis of motion data generated by OpenPose - Behavior Research Methods
Research into dyadic social interactions has expanded significantly, enabling a deeper understanding of the dynamic processes underlying interpersonal communication. As the use of larger datasets becomes increasingly common in this field, the need for scalable and efficient analytical tools has grown. Automated coding methods, such as those provided by OpenPose, an open-source software for detecting and tracking human motion, offer significant advantages for analysing the movement of two individuals during an interaction. However, the processing and analysis of large quantities of JSON output files generated by OpenPose remain a considerable challenge. To address this, we introduce duet, an R package designed to streamline the processing and analysis of OpenPose output data, particularly in the context of dyadic interactions. The package provides a suite of functions for data cleaning, interpolation, kinematic analysis, and visualisation, offering researchers a comprehensive and user-friendly workflow. By simplifying the handling of OpenPose data, duet aims to facilitate large-scale, automated analysis of dyadic social interactions, with minimal coding experience, thereby advancing methodological capabilities in social and behavioural sciences.
doi.org
September 25, 2025 at 7:30 AM
Does neurotype affect social connection? Our new @PLOSONE paper finds autistic people report lower rapport in conversations, but it's not that simple. We found that awareness of who you're talking to is key!

Paper link (OA):
doi.org/10.1371/jour...
Diagnostic status influences rapport and communicative behaviours in dyadic interactions between autistic and non-autistic people
A growing body of research suggests that the behaviours and experiences of autistic and non-autistic people are influenced by whether they are interacting with someone of the same or different diagnos...
doi.org
August 29, 2025 at 10:29 PM
Reposted by Themis Efthimiou
Facial muscle activity can shape how we recognize emotions. Using electrical stimulation and EEG, the study found that activation of smiling muscles makes people more likely to see neutral faces as happy.
@themisefth.bsky.social @sebkorb.bsky.social
www.nature.com/articles/s44...
Electrical stimulation of smiling muscles reduces visual processing load and enhances happiness perception in neutral faces - Communications Psychology
Facial muscle activity can shape how we recognise emotions. Using electrical stimulation and EEG, the study found that activation of smiling muscles makes people more likely to see neutral faces as ha...
www.nature.com
July 3, 2025 at 7:44 AM
Reposted by Themis Efthimiou
This has been a long piece of work – the stage 1 registered report was submitted in 2021!

Its been a team effort with @noahsasson.bsky.social @suereviews.bsky.social @sarah-foster.bsky.social @themisefth.bsky.social @michelleldodd.bsky.social, Martin Lages, Charlotte Wilks + Dani Ropar. #DreamTeam
May 14, 2025 at 2:34 PM
Reposted by Themis Efthimiou
You may have heard me mention that we’ve been doing a follow-up study of our 2020 diffusion chain study which compared how autistic groups, non-autistic groups and mixed groups share information and build rapport (published in @journalautism.bsky.social journals.sagepub.com/doi/full/10....)
Autistic peer-to-peer information transfer is highly effective - Catherine J Crompton, Danielle Ropar, Claire VM Evans-Williams, Emma G Flynn, Sue Fletcher-Watson, 2020
Effective information transfer requires social communication skills. As autism is clinically defined by social communication deficits, it may be expected that i...
journals.sagepub.com
May 14, 2025 at 2:31 PM
So honoured our work on social motor synchrony and rapport received an INSAR award! While I regret not being there in person tomorrow, the brilliant @sarah-foster.bsky.social will be presenting. Please stop by Poster 442.292 in Hall 4A at 12:30 to chat with her! #INSAR2025
First up, @themisefth.bsky.social
🌟INSAR AWARD WINNING 🌟poster on social motor synchrony and rapport in autistic, non-autistic and mixed dyads.

Poster 442.292, Hall 4A, Saturday 12.30!
Themis Efthimiou (@themisefth.bsky.social)
Postdoctoral researcher at the University of Edinburgh.
themisefth.bsky.social
May 2, 2025 at 5:09 PM
Reposted by Themis Efthimiou
V cool finding showing autistic people are not so dependent on synchrony to feel positive about an interaction (without showing less synchrony overall compared with non-autistic pairs)

Also the first ever registered report published in @journalautism.bsky.social !!
March 2, 2025 at 11:09 PM
I'm excited to share my first registered report on social interactions in @journalautism.bsky.social! Our study explores how social motor synchrony – the natural mirroring of movements – impacts rapport between autistic, neurotypical, and mixed dyads. Thread 👇

journals.sagepub.com/doi/10.1177/...
Social motor synchrony and interactive rapport in autistic, non-autistic, and mixed-neurotype dyads - Themis N Efthimiou, Charlotte EH Wilks, Sarah Foster, Michelle Dodd, Noah J Sasson, Danielle Ropar...
In non-autistic populations, social motor synchrony during interactions is linked to increased interpersonal rapport – a friendly connection marked by mutual un...
journals.sagepub.com
February 25, 2025 at 11:52 AM
Variable selection can't be that hard, right? Right? 🥹
December 20, 2024 at 10:18 PM
Reposted by Themis Efthimiou
What is neurodiversity? What does it mean for how we each go about our daily activities?

We've written an article for young people, but hopefully a useful primer for all :)

By @aalcorn.bsky.social, @katiecebula.bsky.social, @suereviews.bsky.social and me.

kids.frontiersin.org/articles/10....
Neurodiversity Can Explain Differences in How People Experience Everyday Life
Neurodiversity means that all people’s brains process information differently from each other. In other words, people think and learn in a variety of ways. Being neurodivergent means that the way a pe...
kids.frontiersin.org
November 18, 2024 at 2:38 PM
This is the way
Bluesky really is the new #rstats twitter because we have the first base R vs tidyverse flame war 🤣
November 16, 2024 at 9:22 PM
Reposted by Themis Efthimiou
Can wearables really unlock the secrets of your health?

A discussion on heart rate variability (HRV) +++ with @dsquintana.bsky.social, Marco Altini and Henrik B. Jacobsen.

youtu.be/jASGg7PJc2A

🧵1/5
November 14, 2024 at 1:40 PM
Reposted by Themis Efthimiou
Does smiling really make you feel happier? 😊

The debate on whether or not facial expressions can influence mood rages on. New work using electrical stimulation, however, adds a fresh twist: www.bps.org.uk/research-dig...
Electrical smiles spark better moods | BPS
The debate on whether facial expressions can influence mood rages on, with new work using electrical stimulation adding a fresh twist.
www.bps.org.uk
October 24, 2024 at 2:20 PM
Reposted by Themis Efthimiou
It was so nice to have the Diversity in Social Intelligence team together last week - from Edinburgh, Dallas, Nottingham, Essex & Glasgow!🌍 We spent some time planning our analyses & I'm really excited about the next few months! @noahsasson.bsky.social @themisefth.bsky.social @suereviews.bsky.social
April 1, 2024 at 2:18 PM
Reposted by Themis Efthimiou
👋 #HiSciSky 🧪

We are very happy to now also be part of this growing community 😀.

We will be posting about our SoNeAt Lab's research on #attachment & caregiving using #fNIRS hyperscanning, fMRI and other neuroimaging & psychology methods.

#neuroskyence #DevSci #DevPsy #PsychSciSky #CogSci
February 10, 2024 at 2:07 PM
February 9, 2024 at 9:43 PM
Today I successfully defended my PhD thesis!

Thank you to my supervisor for his support throughout this journey @sebkorb.bsky.social!
January 18, 2024 at 10:51 PM
Reposted by Themis Efthimiou
I'm excited to release the 𝚝𝚒𝚗𝚢𝚝𝚊𝚋𝚕𝚎 for #RStats ! Convert R dataframes to beautiful tables in HTML, LaTeX, PDF, Quarto, Markdown, etc. Easy to learn; minimalist interface; concise syntax; ultra-customizable tables; and zero dependency. vincentarelbundock.github.io/tinytable/
January 13, 2024 at 8:11 PM
Ending 2023 on a high! Submitted my PhD thesis ✅, published a paper 📚, and thrilled to start a postdoc at the DART Lab led by cjcrompton.bsky.social and @suereviews.bsky.social. Grateful for the journey and excited for new adventures ahead!
December 31, 2023 at 7:52 PM
Finally supports Google pixel material you 😍
bsky.app Bluesky @bsky.app · Dec 22
📢 App Version 1.60 is rolling out now (1/5)

We have a new logo! 🦋 

Bluesky is emerging from its cocoon of clouds to transform into a social butterfly. Read more about why we chose this logo here: blueskyweb.xyz/blog/12-21-2...
December 22, 2023 at 8:57 PM
Reposted by Themis Efthimiou
Happy Όχι Day. Fascism is not good. People seem to forget.

Germans should pay reparations to Greece. It's been a very long time coming.
October 28, 2023 at 9:12 AM
New paper! Proud of this work started back in the lockdown to better understand how fNMES has been used in the field and to provide practical recommendations to others! #psynomBRM

link.springer.com/article/10.3...
Application of facial neuromuscular electrical stimulation (fNMES) in psychophysiological research: ...
Facial neuromuscular electrical stimulation (fNMES), which allows for the non-invasive and physiologically sound activation of facial muscles, has great potential for investigating fundamental questio...
link.springer.com
October 20, 2023 at 7:34 PM
Reposted by Themis Efthimiou
When EEG paradigms are designed to reveal presumed autistic deficits in rapid subtle face processing onlinelibrary.wiley.com/doi/10.1002/... "contrary to our expectations, autistic men did not display significantly reduced neural sensitivity to detect differences in facial identity and/or emotions"
Neural sensitivity to facial identity and facial expression discrimination in adults with autism
We investigated the neural sensitivity of autistic and non-autistic men to rapid changes in facial identity and facial expression. We found that brains of participants in both groups are capable to r....
onlinelibrary.wiley.com
October 17, 2023 at 6:08 PM
Reposted by Themis Efthimiou
Exciting News!
Happy to share our latest preprint! 🧠 We show that Zygomaticus activation through facial neuromuscular electric stimulation (fNMES) induces happiness perception in ambiguous facial expressions

osf.io/preprints/ps...
osf.io
October 15, 2023 at 11:38 AM