David A. Ellis
@davidaellis.bsky.social
660 followers 73 following 100 posts
Professor of Behavioural Science at the University of Bath, UK. Interests = people + technology. ‘Failed upwards’, according to Paul Foot (one of the world's comedians). Part of the 65% who don’t own an air fryer. http://www.davidaellis.co.uk
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Reposted by David A. Ellis
eikofried.bsky.social
Had missed this absolutely brilliant paper. They take a widely used social media addiction scale & replace 'social media' with 'friends'. The resulting scale has great psychometric properties & 69% of people have friend addictions.

link.springer.com/article/10.3...
Development of an Offline-Friend Addiction Questionnaire (O-FAQ): Are most people really social addicts? - Behavior Research Methods
A growing number of self-report measures aim to define interactions with social media in a pathological behavior framework, often using terminology focused on identifying those who are ‘addicted’ to engaging with others online. Specifically, measures of ‘social media addiction’ focus on motivations for online social information seeking, which could relate to motivations for offline social information seeking. However, it could be the case that these same measures could reveal a pattern of friend addiction in general. This study develops the Offline-Friend Addiction Questionnaire (O-FAQ) by re-wording items from highly cited pathological social media use scales to reflect “spending time with friends”. Our methodology for validation follows the current literature precedent in the development of social media ‘addiction’ scales. The O-FAQ had a three-factor solution in an exploratory sample of N = 807 and these factors were stable in a 4-week retest (r = .72 to .86) and was validated against personality traits, and risk-taking behavior, in conceptually plausible directions. Using the same polythetic classification techniques as pathological social media use studies, we were able to classify 69% of our sample as addicted to spending time with their friends. The discussion of our satirical research is a critical reflection on the role of measurement and human sociality in social media research. We question the extent to which connecting with others can be considered an ‘addiction’ and discuss issues concerning the validation of new ‘addiction’ measures without relevant medical constructs. Readers should approach our measure with a level of skepticism that should be afforded to current social media addiction measures.
link.springer.com
Reposted by David A. Ellis
ruben.the100.ci
Our paper "A fragmented field" has just been accepted at AMPPS. We find it's not just you, psychology is really getting more confusing (construct and measure fragmentation is rising).
We updated the preprint with the (substantial) revision, please check it out.
osf.io/preprints/ps...
Treemap showing measurement fragmentation across subfields in psychology. Hill-Shannon Diversity 𝐷=1626.05 How often measures in the APA PsycTESTS database are (re)used according to the APA PsycInfo database: rarely, the majority are never reused. Our fragmentation index (Hill-Shannon diversity) over time across subdisciplines shows fragmentation rising.
davidaellis.bsky.social
There will also be opportunities to work across our current suite of grants and research centres, including the Centre for Healthcare Innovation and Improvement and the Bath Institute for Digital Security and Behaviour. @idsbbath.bsky.social
davidaellis.bsky.social
We are keen to recruit a researcher with expertise in digital health (i.e., health, psychology, human-computer interaction, human factors, computer science, or a cognate discipline) to primarily support Bath’s contribution to LEAP’s Skills and Knowledge Programme.
davidaellis.bsky.social
'Optimeet: A computational tool to enhance participant attendance in group research' In this paper we discuss the challenges of conducting group based research and provide a practical, web-based tool that can enhance the scheduling and recruitment of groups for experimental research.
davidaellis.bsky.social
I proudly held my C.Psychol status for exactly one year after my PhD—during which time nobody asked about it, cared about it, or even knew what those letters meant. A friend once described it as a VIP pass to a club that doesn’t exist. www.bps.org.uk/news/bps-pub...
BPS publishes new guidance on the accurate use of professional titles | BPS
The guidance seeks to support members to present their qualifications and expertise correctly and with confidence.
www.bps.org.uk
davidaellis.bsky.social
The term 'Chartered Psychologist' is now legally protected, which will finally put a stop to the rampant epidemic of people pretending to be chartered psychologists at dinner parties.
BPS publishes new guidance on the accurate use of professional titles | BPS
The guidance seeks to support members to present their qualifications and expertise correctly and with confidence.
www.bps.org.uk
davidaellis.bsky.social
We are at the British Science Festival @britsciassoc.bsky.social today in Liverpool (Kazimier Garden - Kaz Garden). Come and say hello if you are about - mega busy tho! britishsciencefestival.org/event/tech-v... with @lukaszpiwek.bsky.social
davidaellis.bsky.social
Another day, another 'Data available on request' request meets the same fate as my childhood letters to the Tooth Fairy. Honestly, it should just read 'Data available on request (terms and conditions apply: must sacrifice first-born child, solve world hunger, and correctly guess my favorite colour).
Reposted by David A. Ellis
odedrechavi.bsky.social
Lab members watching the PI give a talk on zoom
davidaellis.bsky.social
@hshawberry.bsky.social, Brown O, Hinds J, Nightingale SJ, @jntowse.bsky.social, Ellis DA. The DECIDE Framework: Describing Ethical Choices in Digital-Behavioral-Data Explorations. Advances in Methods and Practices in Psychological Science. 2025;8(3).
davidaellis.bsky.social
Hopefully this also serves to remind people that ethics is a conversation. Not a tick-box exercise. As digital technologies become increasingly central to how participants and citizens interact with researchers and governments, the stakes for getting this right have never been higher.
davidaellis.bsky.social
Now published, the #DECIDEFramework in #AMPPS. Here we provide a suite of resources to support researchers with ethical considerations in digital behavioural research. journals.sagepub.com/doi/full/10....
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Reposted by David A. Ellis
Reposted by David A. Ellis
hshawberry.bsky.social
When should we have discussions about ethics during the research process ? Looking forward to presenting the DECIDE framework today at #Cyber25 @bpscyberpsychology.bsky.social
davidaellis.bsky.social
This appears to be a form of de-evolution, or backward evolution.
pci-regreports.bsky.social
NEW: Statement from the PCI RR Managing Board on the withdrawal of Infant and Child Development as a PCI RR-friendly journal, and the decision by Wiley to refuse preprints that have been peer-reviewed by @peercommunityin.bsky.social / @pci-regreports.bsky.social

Read here ➡️ osf.io/tn8mh
In 2024, Infant and Child Development (ICD) withdrew as a PCI RR-friendly journal and reneged on three Stage 1 recommendations issued by PCI RR. In addition, Wiley – the publisher of ICD – notified PCI RR and the PCI core team of its decision to withdraw all Wiley journals from PCI and PCI RR, including an additional 9 PCI-friendly journals. Finally, Wiley appears to have banned all of its ~1600 journals from considering submissions that have been previously reviewed by PCI or PCI RR. This statement explains the history of ICD joining PCI RR and developments that led to the current outcome. The PCI RR Managing Board believes that this shift in policy to become “PCI-hostile” renders Wiley journals incompatible not only with community-based preprint review but with preprint archiving in general.