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The fact that Dr. Perez's research examines cognitive changes that occur as people progress from young adulthood to late adulthood means that Dr. Perez is a developmental psychologist. The developmental psychologits stuidies how and why human beings change (<span>intellectual and cognitive changes) and develop </span>over the course of their life
These firefighters could be termed to Subculture. A subculture is a group of people who possess behaviors, thoughts, and even moral or ideological principles different from those of the dominant culture of which they are part. Very popular examples of subcultures are the hippies the gothic, however within industrial institutions are also often formed subgroups.
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