identify an appropriate experimental design, taking into account threats to internal validity and demonstration of a functional relation (via baseline logic). Describe how the design will demonstrate experimental control and will provide a rationale as to why the design was selected.

Scenario 4: The dependent variable is Hanna's aggressive behavior during periods of instruction. The operational definition could be: "Aggressive behavior is defined as any instance where Hanna hits, kicks, throws objects, or yells during a 60-minute instruction period. This behavior is measured by the number of aggressive incidents that occur during each instruction period."