Zelda is talking to her grandmother on the phone. You know that Grandma has asked Zelda a question because Zelda begins nodding. You tell Zelda that Grandma cannot see her nodding, so Zelda just nods her head more vigorously. She later tries to "show" her grandmother her new doll by holding it up in front of the phone. Zelda's inability to see the world except from her own viewpoint is referred to as .

egocentric thought.                                      

Explanation:

The concept of egocentric thought was introduced by one of the famous psychologists named Jean Piaget in his theory of cognitive development and it occurs at the preoperational stage.

Egocentric thought: In psychology, the term "egocentric thought" can also be denoted as "egocentric thinking" and is described as an inability of an individual to see a specific event or situation from someone else's perspective or point of view. Egocentric is found in children generally at the preoperational stage yet can be discovered in people at any different age.

In the question above, the given statement signifies the egocentric thought.

answer; social penetration theory;

answer; conventional stage;