During a study, the experimenter tells Kerri, "Either the swan is black or it is not black." Even though Kerri has never seen a black swan, she judges this statement to be true. This is because Kerri
A) cannot yet conserve.
B) is making an A-not-B error.
C) is engaging in propositional thought.
D) is egocentric.

Question

Quizplus · Accepted Answer

Kerri is engaging in propositional thought, which means she is able to understand the logical relationship between two statements even if she has no direct experience with the subject matter. In this case, she understands the logical relationship between "the swan is black" and "the swan is not black." This ability is a key feature of formal operational thinking, which develops in adolescence. Therefore, options A, B, and D are incorrect.

During a Study, the Experimenter Tells Kerri, "Either the Swan