An ethical issue can be a positive or a negative feature of the research which takes into account or goes against ethical guidelines
Consent: the children cannot give informed consent and the parents weren't asked to give it on their behalf
Deception: the children were not given any indication of what the study was about or debriefed
Withdrawal from the investigation: there was a researcher at the door stopping the children from leaving at each stage
Confidentiality: some video footage of the experiment was released however this was with the consent from the children's parents
Protection of participants: the children were not followed up upon or offered counselling, may have become more violent in the future after being exposed to these role models