A new way of classifying developmental prosopagnosia: Balanced Integration Score

Alternative title Classifying DP using BIS



Lowes J, Hancock P & Bobak A (2024) A new way of classifying developmental prosopagnosia: Balanced Integration Score [Classifying DP using BIS]. Cortex, 172, pp. 159-184.

Despite severe everyday problems recognising faces, some individuals with developmental prosopagnosia (DP) can achieve typical accuracy scores on laboratory face recognition tests. To address this, studies sometimes also examine response times (RTs), which tend to be longer in DPs relative to control participants. In the present study, 24 potential (according to self-report) DPs and 110 age-matched controls completed the Cambridge Face and Bicycle Memory Tests, old new faces task, and a famous faces test. We used accuracy and the Balanced Integration Score (BIS), a measure that adjusts accuracy for RTs, to classify our sample at the group and individual levels. Subjective face recognition ability was assessed using the PI20 questionnaire and semi structured interviews. Fifteen DPs showed a major impairment using BIS compared with only five using accuracy alone. Logistic regression showed that a model incorporating the BIS measures was the most sensitive for classifying DP and showed highest area under the curve (AUC). Furthermore, larger between-group effect sizes were observed for a derived global (averaged) memory measure calculated using BIS vs accuracy alone. BIS is thus an extremely sensitive novel measure for attenuating speed-accuracy trade-offs that can otherwise mask impairment measured only by accuracy in DP.

Developmental prosopagnosia; Face processing; Speed-accuracy trade off; Face recognition; Balanced Integration Score; Neurodevelopment

Cortex: Volume 172

FundersEconomic and Social Research Council, The Leverhulme Trust and British Psychological Society
Publication date31/03/2024
Publication date online31/01/2024
Date accepted by journal19/12/2024
PublisherElsevier BV

People (2)


Professor Peter Hancock

Professor Peter Hancock

Professor, Psychology

Ms Judith Lowes

Ms Judith Lowes

Tutor (ASF), Psychology