A collection of R functions that are widely used by the Petersen Lab. Included are functions for various purposes, including evaluating the accuracy of judgments and predictions, performing scoring of assessments, generating correlation matrices, conversion of data between various types, data management, psychometric evaluation, extensions related to latent variable modeling, various plotting capabilities, and other miscellaneous useful functions. By making the package available, we hope to make our methods reproducible and replicable by others and to help others perform their data processing and analysis methods more easily and efficiently. The codebase is in <doi:10.5281/zenodo.7602890>. The package is described in Petersen (2024) <doi:10.1201/9781003357421>, <doi:10.5281/zenodo.6466590>.
Package details 


Author  Isaac T. Petersen [aut, cre] (<https://orcid.org/0000000330726673>), Developmental Psychopathology Lab at the University of Iowa [ctb] 
Maintainer  Isaac T. Petersen <isaactpetersen@uiowa.edu> 
License  MIT + file LICENSE 
Version  1.0.0 
URL  https://github.com/DevPsyLab/petersenlab https://devpsylab.github.io/petersenlab/ 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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