Answer :
Julia observes a child's behavior after he had watched 15 minutes of violent cartoons. She codes the child's behavior every 30 seconds based on the number of times he hits, kicks, pushes, or bites another child. This observational technique can best be described as systematic observation.
In the field of research, systematic observation can be described as a type of observation in which specific actions or attributes are judged.
In the scenario mentioned in the question, Julia is observing specific actions of hits, kicks etc that represent violence. She is specifying the actions that are to be observed and her research will be conducted by observing these actions. Hence, in the above case, Julia uses the systematic observational technique to observe any violent activity in the child's behavior.
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