Use the Capella Library to locate and search 4 (four) recent (within the past 5-7 years) behavior analytic journals, single-subject design articles related to the behavior of physical aggression in children and adolescents diagnosed with autism spectrum disorder 

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