Overview

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Project repository associated with the paper

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• Bohn, M., Völter, C., Hanus, D., Eisbrenner, N., Eckert, J., Holtmann, J., & Haun, D. (2026). Individual differences in great ape cognition across time and domains: stability, structure, and predictability. Psychological Science.

Structure

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├── analysis                    <-- code for analysis (in supplement.Rmd), reliability and social relations model
├── data                        <-- data files
├── materials                   <-- documentation to replicate study, including a coding sheet*
    └── videos                  <-- example videos for each task to replicate the procedure
├── outputs                     <-- SEM model outputs**
├── paper                       <-- manuscript file and figures
├── saves                       <-- saved intermediate results from analysis
├── utils                       
└── visuals                     <-- saved figures



*the coding sheet also shows the positioning of food rewards and condition (if applicable) for each task and trial
**for SEM model syntax, open the respective .out files with a text editor.