Final answer:
This video clip suggests that 5-year-olds may believe that the volume of a liquid changes as its shape changes, in contrast to 7-year-olds.
Step-by-step explanation:
This question is asking about a video clip that suggests that 5-year-olds may believe that the volume of a liquid changes as its shape changes, in contrast to 7-year-olds.
Research experiments involving pouring liquid from one glass to another help psychologists understand at what age children begin to comprehend that the volume of liquid remains the same despite changes in container shape.
This finding relates to cognitive development and the understanding of conservation, which is one of the key concepts in Piaget's theory of cognitive development.