Data and R code for the manuscript: Bračić, M., Bierbaum, L., Peng ,M., Nimalavachchlan L., Siewert, V., Kaiser, S., Sachser, N., & Richter, S. H. (2023). The behavioural ecology of optimism: exploring potential consequences of judgement bias in mice Data and R code for analysis of potential ecological consequences of judgment bias in mice <strong>AUTHOR</strong>: Marko Bracic <strong>CONTACT</strong>: mbracic192@gmail.com **INSTITUTION**: University of Münster, Department for Behavioural Biology **FIRST RELEASE DATE**: June 2023 AIM: Investigate ecological consequences of (cognitive) judgment bias (aka "optimism") The repository includes the following files: ## <strong>Data</strong> Data files used for statistical analysis and visualisation ECT_chambers.csv contains data used to compare the response of mice to predator and safe chamber in the ECT JBT_all.csv contains data used to analyse the response of mice in the JBT JBTxECT_day.csv contains data used to assess the relationship between JBT and ECT as well as the repeatability of the ECT JBTxECT_id.csv contains data used to assess the repose to predator cues compared to training criteria in ECT as well as to visualise the relationship between JBT and ECT ## <strong>R scripts</strong> R scripts used to perform statistical analysis and visualisation: Stats_figures_ECT.R contains the R code used to analyse and visualise the behavioural response of mice in the ECT Stats_figures_JBT.R contains the R code used to analyse and visualise the response of mice in the JBT Stats_figures_JBTxECT.R contains the R code used to assess the relationship between JBT and ECT as well as the repeatability of the ECT ## <strong>Readme files </strong> readme.docx shorty describes how the data was generated and how to run the R scripts. readme.csv list and short descriptions of variables in the data