1. Cassidy, S., Roche, B., & Hayes, S. C. (2011). A relational frame training intervention to raise intelligence quotients: A pilot study. The Psychological Record, 61, 173–198.
2. Dixon, M. R. (2014). PEAK relational training system: Direct training module. Carbondale: Shawnee Scientific Press.
3. Dixon, M. R. (2015). PEAK relational training system: Equivalence module. Carbondale: Shawnee Scientific Press.
4. Dixon, M. R., Belisle, J., Blevins, A., & Hayes, S. C. (under review). Derived relational responding is a generalized operant: Evidence from children with autism using the PEAK-E curriculum.
5. Dixon, M. R., Belisle, J., & Stanley, C. R. (2018). Derived relational responding and intelligence: Assessing the relationship between the PEAK-E Pre-Assessment and IQ with individuals with disabilities. The Psychological Record.