limitation as the evidence produced was in a lab because most of his evidence was gathered during an observation of young children behaviour, therefore they are more susceptible towards demand characteristics meaning they are more likely to do what the researcher wants them to do. The main purpose of the doll experiment was top strike it so the children thought that they were expected to do that. This suggests that the approach is less valid due to demand characteristics, and it shows less of how children learn aggression in everyday life as the environment is artificial.