The answer to this is Theory (not hypothesis as some may say)
Answer:
Bobo Doll experiment
Explanation:
Bandura Doll experiments demonstrated that children are capable to learn by observing the adult behaviour. It was a name given to the experiments performed by Albert Bandura in 1960s.
In 1960s he studied that how children would behave if they saw adults acting aggressively towards a bobo doll. There were different versions of the experiment but the most important experiment was the one that measured the children's behaviour when the human models was punished, awarded or faced no consequence for physically abusing the Bobo doll.
The experiments tested Banduras Social learning theory and proved that children also learn by watching someone else being punished or rewarded, it is called observational learning
The Chinese found out that they could use coal to heat things and make steel.
