Rahnev D Desender K Lee ALF Adler WT Aguilar-Lleyda D Akdoğan B Arbuzova P Atlas LY Balcı F Bang JW Bègue I Birney DP Brady TF Calder-Travis J Chetverikov A Clark TK Davranche K Denison RN Dildine TC Double KS Duyan YA Faivre N Fallow K Filevich E Gajdos T Gallagher RM de Gardelle V Gherman S Haddara N Hainguerlot M Hsu TY Hu X Iturrate I Jaquiery M Kantner J Koculak M Konishi M Koß C Kvam PD Kwok SC Lebreton M Lempert KM Ming Lo C Luo L Maniscalco B Martin A Massoni S Matthews J Mazancieux A Merfeld DM O'Hora D Palser ER Paulewicz B Pereira M Peters C Philiastides MG Pfuhl G Prieto F Rausch M Recht S Reyes G Rouault M Sackur J Sadeghi S Samaha J Seow TXF Shekhar M Sherman MT Siedlecka M Skóra Z Song C Soto D Sun S van Boxtel JJA Wang S Weidemann CT Weindel G Wierzchoń M Xu X Ye Q Yeon J Zou F Zylberberg A 2020 Understanding how people rate their confidence is critical for the characterization of a wide range of perceptual, memory, motor and cognitive processes. To enable the continued exploration of these processes, we created a large database of confidence studies spanning a broad set of paradigms, participant populations and fields of study. The data from each study are structured in a common, easy-to-use format that can be easily imported and analysed using multiple software packages. Each dataset is accompanied by an explanation regarding the nature of the collected data. At the time of publication, the Confidence Database (which is available at https://osf.io/s46pr/) contained 145 datasets with data from more than 8,700 participants and almost 4 million trials. The database will remain open for new submissions indefinitely and is expected to continue to grow. Here we show the usefulness of this large collection of datasets in four different analyses that provide precise estimations of several foundational confidence-related effects. application/pdf https://sonar.ch/global/documents/76892 eng info:eu-repo/semantics/altIdentifier/doi/10.1038/s41562-019-0813-1 info:eu-repo/semantics/altIdentifier/pmid/32015487 info:eu-repo/semantics/openAccess Nature human behaviour. - 2020 Adult Choice Behavior Databases, Factual Datasets as Topic Humans Mental Processes Metacognition Psychometrics Reaction Time Task Performance and Analysis The Confidence Database. http://purl.org/coar/resource_type/c_6501