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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Data-driven studies in Face Identity Processing rely on the quality of the tests and data sets.
Author(s): Bobak, Anna K
Jones, Alex L
Hilker, Zoe
Mestry, Natalie
Bate, Sarah
Hancock, Peter J B
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Keywords: Face identity processing
face perception
face memory
individual differences
principal component analysis
agglomerative clustering
Date Deposited: 12-Jun-2023
Citation: Bobak AK, Jones AL, Hilker Z, Mestry N, Bate S & Hancock PJB (2023) Data-driven studies in Face Identity Processing rely on the quality of the tests and data sets.. <i>Cortex</i>.
Abstract: There is growing interest in how data-driven approaches can help understand individual differences in face identity processing (FIP). However, researchers employ various FIP tests interchangeably, and it is unclear whether these tests 1) measure the same underlying ability/ies and processes (e.g., confirmation of identity match or elimination of identity match) 2) are reliable, 3) provide consistent performance for individuals across tests online and in laboratory. Together these factors would influence the outcomes of data-driven analyses. Here, we asked 211 participants to perform eight tests frequently reported in the literature. We used Principal Component Analysis and Agglomerative Clustering to determine factors underpinning performance. Importantly, we examined the reliability of these tests, relationships between them, and quantified participant consistency across tests. Our findings show that participants’ performance can be split into two factors (called here confirmation and elimination of an identity match) and that participants cluster according to whether they are strong on one of the factors or equally on both. We found that the reliability of these tests is at best moderate, the correlations between them are weak, and that the consistency in participant performance across tests and is low. Developing reliable and valid measures of FIP and consistently scrutinising existing ones will be key for drawing meaningful conclusions from data-driven studies.
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Notes: Output Status: Forthcoming/Available Online

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