A mother pours each of her two children a cup of chocolate milk. Although each cup holds the same amount of liquid, one is taller and skinnier. The child who does not receive the tall, skinny glass starts crying because she is convinced that her brother received more chocolate milk than she did. Which cognitive developmental concept does this child have trouble understanding?

a. Reversibility
b. Centration
c. Conservation
d. Classification

Answer: c. Conservation

Psychology

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Two general principles of perception are shared by all infants: one is dynamic perception and the other is people preference

Indicate whether this statement is true or false.

Psychology

According to the authors, the key criteria for evaluating personality assessments are:

A) significance and reliability. B) significance and validity. C) reliability and significance. D) reliability and validity.

Psychology