What part of W. W. Jacobs's The Monkey's Paw show that the White family does not believe in the talismans power?

In W. W. Jacobs's "The Monkey's Paw," the White family initially demonstrates disbelief in the talisman's powers when Mr. White dismissively scoffs at the idea of making a wish, suggesting that the paw's magic is mere superstition. After the first wish is made, their skepticism is further highlighted by their casual attitude, as they treat the event lightly rather than with fear or caution. It's only after the tragic consequences of their wishes unfold that their disbelief is challenged, revealing how their skepticism shifts to regret.