<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Dataset_FalsePriors_BEH</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/8KTGAU</IDNo></titlStmt><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><distDate>2026-07-21</distDate></distStmt><verStmt source="DVN"><version date="2026-07-21" type="RELEASED">1</version></verStmt><biblCit>Bleser, Anna, 2026, "Dataset_FalsePriors_BEH", https://doi.org/10.26165/JUELICH-DATA/8KTGAU, Jülich DATA, V1</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Dataset_FalsePriors_BEH</titl><IDNo agency="DOI">doi:10.26165/JUELICH-DATA/8KTGAU</IDNo></titlStmt><rspStmt><AuthEnty>Bleser, Anna</AuthEnty></rspStmt><prodStmt/><distStmt><distrbtr source="archive">Jülich DATA</distrbtr><contact email="a.bleser@fz-juelich.de">Bleser, Anna</contact><depositr>Bleser, Anna</depositr><depDate>2025-09-04</depDate></distStmt></citation><stdyInfo><subject><keyword>Medicine, Health and Life Sciences</keyword><keyword>learning rate</keyword><keyword>Rescorla-Wanger model</keyword><keyword>false belief</keyword><keyword>probabilistic reversal-learning</keyword><keyword>reaction times</keyword><keyword>predictive coding</keyword></subject><abstract>This dataset contains raw behavioral responses of 32 participants (M = 27.72 years, SD = 4.06, 18 males). The experiment examined how participants update cue-target contingencies across two versions of a probabilistic reversal-learning task (reactive and predictive) when provided with accurate or misleading information about environmental volatility. In the reactive task participants were asked to indicate the target location after it’s appearance. In the predictive task participants were asked to predict the target location based on the auditory cue. Each row in the dataset represents one trial. Below is a description of the columns:&#xd;
1.	Block: indicates experimental condition (1: stable/true, 2: stable/false, 3: volatile/true, 4: volatile/false)&#xd;
2.	Instruction at the beginning of a block&#xd;
3.	Environment of the block&#xd;
4.	Index of first and second half&#xd;
5.	Trial number&#xd;
6.	Indicates auditory cue for this trial (hi: high tone, lo: low tone)&#xd;
7.	Indicates target location&#xd;
8.	Indicates target location on the left side&#xd;
9.	Indicates target position on the right side&#xd;
10.	Indicates validity of the trial&#xd;
11.	Indicates cue-target contingency (0: high tone/right, low tone/left; 1: high tone/left, low tone/right)&#xd;
12.	Indicates inter-trial-interval&#xd;
13.	(redundant) description of trial&#xd;
14.	Indictes trial code&#xd;
15.	Indicates button press left/right&#xd;
16.	Reaction time&#xd;
17.	Indicates correctness of response in reactive task; indicates overlap with current association in the predictive task</abstract><sumDscr/></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><notes type="DVN:TOU" level="dv">CC0 Waiver</notes><setAvail/><useStmt/></dataAccs><othrStdyMat/></stdyDscr><otherMat ID="f37052" URI="https://data.fz-juelich.de/api/access/datafile/37052" level="datafile"><labl>01_volatile_gratings_2024-04-10_13-16.csv</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/csv</notes></otherMat><otherMat ID="f37059" URI="https://data.fz-juelich.de/api/access/datafile/37059" level="datafile"><labl>02_volatile_gratings_2024-04-12_10-22.csv</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/csv</notes></otherMat><otherMat ID="f37050" URI="https://data.fz-juelich.de/api/access/datafile/37050" level="datafile"><labl>03_volatile_gratings_2024-04-12_17-19.csv</labl><notes 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