Answer:both Tommy's and mom's behaviour has been shaped
Step-by-step explanation:
Tommy's behaviour of playing video games is being shaped by his mom as she constantly keep on being on him to reinforce this idea that he needs to stop playing video games.
Shaping involves teaching someone a new behaviour that is usually unknown or unfamiliar to them hence it may take time and patience because a person may resist to learn the new behaviour or may not be ready to learn it.
Mom's also is being shaped by Tom inability to listen to her shouting when giving instructions and her patience is being shaped also as Tommy is not stopping this behaviour and she has to learn to continue reinforcing this idea without giving up at the first attempt .