Using the following reference:

Callahan, M., Matson, J., Tevis, C., & Brown, M. (2022). Aggression in Toddlers with Autism Spectrum Disorder as Predicted by Sleep Problems. Journal of Developmental and Physical Disabilities, 34(4), 645-654. https://doi.org/10.1007/s10882-021-09818-5

1. Fully describe the dependent variable, including all key details (this should be the selected targeted behavior)
2. Fully describe the implementation of the independent variable, including all key details. (This should be the intervention or interventions used).
3. Identify the single-subject design and provide a rationale for your choice in each case.
4. Fully describe the data collection procedure and inter-observer agreement (IOA) method used, including all key details.
5. Fully describe the internal, external, and social validity of each study, including all key details.
6. Fully describe the conclusions to the study, including the effectiveness of the interventions, including all key details.