Scientists interested in researching whether people are happier with their lives as they get older would be attempting to answer Universal or Unique questions.
A scientist is a person who conducts scientific research to improve knowledge in a field of interest. Scientists are motivated to study in many different ways. Many people want to understand why the world is the way we see it and how it came about.
A scientist is someone who systematically collects and uses research and evidence, formulates and tests hypotheses in order to gain and share understanding and knowledge. A scientist can be further defined by how they do it, such as using statistics (statistician) or data (data scientist).
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