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John Martindale

@johnmartindale.bsky.social
114 followers 305 following 12 posts

Lecturer in differential psychology @ University of Edinburgh Dark Triad, workplace, measurement, construct proliferation

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Reposted by John Martindale
Tom Stafford @tomstafford.mastodon.online.ap.brid.gy · 28/01/2026
After all, why not? Why shouldn't I keep it?
Meme

Biblio holds the phone

On the phone: chatGPT: "You're absolutely right - you found it"
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John Martindale @johnmartindale.bsky.social · 03/12/2025
This looks very interesting thanks for sharing. We can get so caught up in “statistical validity” that’s people seem to forget everything that comes before it - far more important in my view
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John Martindale @johnmartindale.bsky.social · 03/12/2025
100% agreed. We used cognitive interviewing as part of a recent scale development and got extremely valuable data about the latent trait at all levels of the items bsky.app/profile/john.... To our knowledge the only paper to have done so thus far, hopefully it will become more widely used in time!
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John Martindale @johnmartindale.bsky.social · 27/11/2025
If you would like to get in touch to discuss the paper I would love to speak, and you can reach me at jmartind@ed.ac.uk
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John Martindale @johnmartindale.bsky.social · 27/11/2025
I am indebted to my co-authors David Hughes, Paul Irwing and Leigha Rose for the immense amount of hard work they put into this paper, and @jdmiller.bsky.social and @drlynam.bsky.social for their support and advice at a critical juncture for the project last summer.
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John Martindale @johnmartindale.bsky.social · 27/11/2025
Of special note is the use of a think-aloud-protocol study: qualitative interviews that assess the cognitive mechanisms underlying response processes. It therefore provides direct evidence of whether items are accurately measuring their target construct at all levels of the latent trait.
Example of think-aloud-protocol results
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John Martindale @johnmartindale.bsky.social · 27/11/2025
Psychometrically, the FDT was developed using the @david-j-hughes.bsky.social Accuracy and Appropriateness model, which provides a comprehensive set of evidentiary criteria for determining whether a test (1) measures what it purports to, and (2) is useful for some specified purpose.
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John Martindale @johnmartindale.bsky.social · 27/11/2025
Our measure provides the field with a comprehensive and redundancy-free set of facets that captures all elements argued to be of importance to Psychopathy, Narcissism and Machiavellianism, thereby providing a platform for resolving conceptual debates over the composition of the three constructs.
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John Martindale @johnmartindale.bsky.social · 27/11/2025
The FDT builds upon the basic trait approach, used so successfully by @jdmiller.bsky.social and @drlynam.bsky.social, by consolidating the facets across their Elemental Psychopathy Assessment, Five Factor Narcissism Inventory and Five Factor Machiavellianism Inventory measures.
Table showing the overlap across the EPA, FFNI and FFMI
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John Martindale @johnmartindale.bsky.social · 27/11/2025
We set about addressing this issue in a comprehensive, rigorous, and multi-study scale development process that is now published and available open-access at Assessment: journals.sagepub.com/doi/epdf/10.....
journals.sagepub.com
Development and Validation of the Faceted Dark Triad (FDT) Scale
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John Martindale @johnmartindale.bsky.social · 27/11/2025
Psychopathy, Narcissism and Machiavellianism are implicated in many of the most significant societal issues we face, including crime, destructive leadership, bullying and even terrorism. However, debate persists about how effectively they are captured by existing measures.
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Reposted by John Martindale
Hetan Shah @hetanshah.bsky.social · 17/10/2025
We are awarding our President's Medal to 'In Our Time' as it has done so much to showcase humanities & social sciences. We'd decided this before the news of Melvyn Bragg stepping down, but glad we got our timing right & had a chance to celebrate with him! www.thebritishacademy.ac.uk/news/renowne...
thebritishacademy.ac.uk
Renowned BBC Radio 4 programme In Our Time receives prestigious British Academy President’s Medal for 2025
The British Academy has awarded its prestigious President’s Medal to the long-running and beloved BBC Radio 4 programme In Our Time. Recognising its outstanding contribution to humanities and social s...
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John Martindale @johnmartindale.bsky.social · 02/10/2025
The website and social media accounts for our @leverhulme.ac.uk funded project Weaponised Pasts are now live, give us a follow! 🥳
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Reposted by John Martindale
Chiara Bonacchi @chiara-bonacchi.bsky.social · 19/09/2025
This week, it was exciting to host @acerbialberto.com at @hcaatedinburgh.bsky.social @edinburgh-uni.bsky.social to launch our @leverhulme.ac.uk-funded *Weaponised Pasts* research project, through three days of teamwork, followed by a kick-off event at @edfuturesinstitute.bsky.social
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John Martindale @johnmartindale.bsky.social · 23/04/2025
I grew up in SW zone 4 / 5. To me it's wherever you wouldn't preface with a compass direction. Mayfair yes, Chelsea & Kensington no. Southwark yes, Elephant & Castle no. Liverpool St yes, Shoreditch no. Kings Cross yes, Camden no. It's ephemeral but it's there, and you def say "go up / in to".
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