Anchor sinking effect refers to the fact that when people make judgments about something, they are susceptible to the first impression or first information, which fixes people's thoughts somewhere like an anchor sinking into the sea. The first impression and preconceivedness are its manifestations in social life.
According to the above definition, the neighbor stealing Washington's horse and refusing to admit it, and Washington covering the horse's eyes and asking which eye is blind is not anchor sinking effect.