Liam and Noah are first-year student nurses walking through a public park opposite the hospital after finishing their shift. While chatting, they spot their supervising ward manager, Sister Croft, sitting on a bench on the far side of the lawn.

Sister Croft calls out loudly, “You two! Come back over here right now to help clear up the training room!”

Liam and Noah glance at each other, chuckle, and continue walking quickly toward the exit of the park.

Using your knowledge of research into obedience, explain possible reasons why Liam and Noah failed to obey Sister Croft.