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According to Rothbart, individuals differ not just in their reactivity on each dimension but also in
Leisure Time
Time spent not working and free from domestic or professional duties, allowing for rest, recreation, or personal activities.
Unproductive Activity
Unproductive Activity is an economic term that describes actions or work that do not contribute to the production of goods or services or generate economic value.
Productive Activity
Productive activity involves processes or actions that contribute to the production of goods and services, thereby adding economic value.
Marginal Social Cost
The additional cost society bears for producing one more unit of a good or service.
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