01-Preface.Rmd

# Preface {-}

This book is a work in progress.
I will continue to add to and update it as I am able.

## Open Access {#openAccess}

This is an open-access book.
This means that it is freely available for anyone to access.

## License {#license}

![Creative Commons License](Images/CC-BY.png){width=50%}

The online version of this book is licensed under the [Creative Commons Attribution License](https://creativecommons.org/licenses/by/4.0/).
In short, you can use my work as long as you cite it.

## Citation {#citation}

The APA-style citation for the book is:

Petersen, I. T. (2024). *Principles of psychological assessment: With applied examples in R*. Version 1.0.7. University of Iowa Libraries. https://isaactpetersen.github.io/Principles-Psychological-Assessment. https://doi.org/10.25820/work.007199

The DOI for the code is below:

[![DOI](Images/zenodo_doiBadge.png)](https://doi.org/10.5281/zenodo.6466589)

The BibTeX citation for the book is:

```
@book{petersenPrinciplesPsychologicalAssessment,
  title = {Principles of psychological assessment: With applied examples in {R}},
  author = {Petersen, Isaac T.},
  year = {2024},
  publisher = {{University of Iowa Libraries}},
  note = {Version 1.0.7},
  doi = {10.25820/work.007199},
  isbn = {9780984037827},
  url = {https://isaactpetersen.github.io/Principles-Psychological-Assessment}
}
```

A print version is available for purchase: https://www.amazon.com/Principles-Psychological-Assessment-Statistics-Behavioral/dp/1032413069.
The APA-style citation for the print version of the book is:

Petersen, I. T. (2024). *Principles of psychological assessment: With applied examples in R*. Chapman and Hall/CRC. https://www.routledge.com/9781032413068; https://doi.org/10.1201/9781003357421

## Accessibility {#accessibility}

I strive to follow [principles of accessibility](https://bookdown.org/yihui/rmarkdown-cookbook/html-accessibility.html) (archived at https://perma.cc/8XJ9-Q6QJ) to make the book content accessible to people with visual impairments and physical disabilities.
If there are additional ways I can make the content more accessible, please let me know.

## How to Contribute {#contribute}

This is an open-access textbook.
My goal is to share principles of psychological assessment with other researchers and clinicians that they can access for free!
Anyone is welcome to contribute to the project.
If you would like to contribute, feel free to [open an issue](https://github.com/isaactpetersen/Principles-Psychological-Assessment/issues) or [create a pull request](https://github.com/isaactpetersen/Principles-Psychological-Assessment/pulls) on GitHub.\index{GitHub}
The GitHub repository for the book is located here:\index{GitHub} https://github.com/isaactpetersen/Principles-Psychological-Assessment.
If you have data or analysis examples that are you willing to share and include in the book, feel free to contact me.

## Acknowledgments {#acknowledgments}

This book was supported by an OpenHawks Open Educational Resources grants program from the University of Iowa Libraries.

This book would not be possible without the help of others.
Much of the content of this book was inspired by Richard Viken's course in psychological assessment that I took as a graduate student.
I thank W. Joel Schneider who provided several examples that were adapted for this book.
I thank Danielle Szabreath, Samar Haddad, and Michele Dumont for help in copyediting.
I acknowledge my wife, [Alyssa Varner](https://alyssajovarner.com), who helped design several of the graphics used in this book, in addition to all of her support throughout the process.