QMSBR — Quantitative Methods for Social and Behavioral Research
Copyright (c) 2026 Jinsong Chen

Maintained by Jinsong Chen, Faculty of Education, The University of Hong Kong.
The affiliation identifies the author; QMSBR is not an official University
service and no institutional endorsement or trademark right is implied.

Unless a file says otherwise:

1. TEXT AND FIGURES — CC BY 4.0
   Chapter text, part introductions, website prose, and original figures are
   licensed under the Creative Commons Attribution 4.0 International License.
   https://creativecommons.org/licenses/by/4.0/
   To attribute: name Jinsong Chen and QMSBR, link to
   https://jinsong-chen.github.io/QMSBR/, and say whether you made changes.

2. CODE — MIT
   Original R code in the chapters and in the accompanying .R files is licensed
   under the MIT License.

   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   SOFTWARE.

3. SIMULATED DATA — CC0 1.0
   Original simulated data and computational teaching records created for
   QMSBR are dedicated to the public domain under CC0 1.0 Universal:
   part-one/chapter_03_special_practice.csv, background_sound.csv,
   feedback_practice.csv, feedback_practice_timing.csv, and
   part-two/sle_continuous.csv and reliability_bootstrap.csv. The last file
   retains all 2,000 bootstrap attempts for a composite of the simulated
   SLE responses, including the recorded convergence and admissibility.
   https://creativecommons.org/publicdomain/zero/1.0/

THIRD-PARTY MATERIAL DISTRIBUTED WITH THIS REPOSITORY

4. part-one/realinho2022_students.csv is a curated subset of the student
   records released as "Predict Students' Dropout and Academic Success" in the
   UCI Machine Learning Repository (dataset 697) by Realinho, V., Machado, J.,
   Baptista, L., and Martins, M. V. (2022). Predicting student dropout and
   academic success. Data, 7(11), 146.
   https://doi.org/10.3390/data7110146 — licensed CC BY 4.0. That attribution
   and licence travel with the file and with any redistribution of it.

5. The embedded secondary-school example data used in Chapter 2 are curated subsets
   derived from Cortez, P. (2008). Student Performance. UCI Machine Learning
   Repository.
   https://doi.org/10.24432/C5TG7T — licensed CC BY 4.0. That attribution and
   licence travel with the file and with any redistribution of it.

6. apa.csl comes from the Citation Style Language styles collection and is
   licensed CC BY-SA 3.0. It credits Brenton M. Wiernik, Andrew Dunning, the
   CSL styles collection, and the Style Variant Builder.
   https://creativecommons.org/licenses/by-sa/3.0/

7. Everything under practice/ — the R-support pages, the bundled Quarto
   Live/WebR runtime under practice/site_libs/, and the data files under
   practice/data/ — keeps its own sources and terms, which are stated in
   practice/LICENSE and in the data note those pages link to.

The PDF sources also use koma_heading_tags.tex, adapted from the KOMA-Script
project's heading-hook example based on code by Ulrike Fischer. Its source
attribution is retained in the file. This third-party adaptation is not
represented as original QMSBR R code under item 2 above.
https://sourceforge.net/p/koma-script/wiki-en/HowTo_Tagging/

THIRD-PARTY MATERIAL NOT DISTRIBUTED HERE

8. Package datasets used in examples — including carData::Baumann,
   carData::Prestige, carData::Womenlf, HistData::GaltonFamilies, and
   AER::STAR — are loaded from their R packages and are not redistributed by
   QMSBR. They retain their own terms; the chapters cite
   the packages and the original studies.

9. Bootstrap, search, font, and related assets that Quarto generates during a
   build retain their upstream licences. They are build outputs, not QMSBR code.

10. Citing a work does not license it. External names and trademarks remain the
    property of their owners.