note on bias, ability and the lack of correlation between match and mismatch
Dear colleagues, I've written a short note relating to a simulation I ran to clarify my muddy thinking about the effects of bias (towards match or mismatch) in face matching experiments and the way that principal components analysis separates match and mismatch items into different components. I can't see it making a published paper but I figure others may find it useful, so I've put it up on psyarxiv: https://psyarxiv.com/f2a9j Bottom line: when participants vary in bias and ability independently, PCA tends to separate match and mismatch trials, especially after varimax rotation. The (not very elegant) matlab simulation code is on OSF, linked from the paper. Comments welcome, to me rather than the whole list. Peter Peter Hancock (he/him) Professor Psychology, School of Natural Sciences University of Stirling FK9 4LA, UK phone 01786 467675 http://rms.stir.ac.uk/converis-stirling/person/11587 @pjbhancock Latest paper: Simulated automated facial recognition systems as decision-aids in forensic face matching tasks.<https://psycnet.apa.org/record/2023-24366-001?doi=1> https://psycnet.apa.org/doiLanding?doi=10.1037%2Fxge0001310 My messages may arrive outside of the working day but this does not imply any expectation that you should reply outside of your normal working hours. If you wish to respond, please do so when convenient. ________________________________ Scotland's University for Sporting Excellence The University of Stirling is a charity registered in Scotland, number SC 011159
Hello Fellow Face Researchers, I was wondering if anyone knows of face database containing Asian and Caucasian individuals with frontal, 3/4 and profile viewpoints of each model. Any help that people can provide would much appreciated. Thanks very much. Jim Tanaka Professor, Dept. of Psychology Director, Different Minds Lab Fellow, Royal Society of Canada University of Victoria jtanaka@uvic.ca https://oac.uvic.ca/differentmindslab/
Dear Jim, we have recently published the "Bi-AGI Database", which contains male and female face stimuli varying in age across lifespan from 18 to 87 years, gaze direction and illumination conditions. Here are the links for the paper and Database download. Hope this can help you. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9608625/ https://board.unimib.it/datasets/rx6kpwmvtf/1 All the best, Giulia Il giorno mar 30 mag 2023 alle ore 06:12 Jim Tanaka <jtanaka@uvic.ca> ha scritto:
Hello Fellow Face Researchers,
I was wondering if anyone knows of face database containing Asian and Caucasian individuals with frontal, 3/4 and profile viewpoints of each model. Any help that people can provide would much appreciated.
Thanks very much.
Jim Tanaka
Professor, Dept. of Psychology Director, Different Minds Lab Fellow, Royal Society of Canada University of Victoria jtanaka@uvic.ca https://oac.uvic.ca/differentmindslab/
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participants (3)
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Giulia Camilla Mattavelli -
Jim Tanaka -
Peter Hancock