A social scientist wants to determine if showing a film will affect religious tolerance. A sample of freshman males was drawn from a university. Pre and post film ratings of religious tolerance were obtained. A higher number represents higher tolerance. The following data were obtained: 
Definitions:
Schema
A mental structure or idea that aids in categorizing and understanding information in the brain.
Preoperational Stage
A developmental phase, outlined by Jean Piaget, where children from about 2 to 7 years old engage in symbolic play and struggle with logic and taking the perspective of others.
Conservation
A cognitive ability recognized by Jean Piaget that allows a person to determine that a quantity will remain the same despite adjustment of the container, shape, or apparent size.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed or heard.
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