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Suppose an American worker can make 100 nets or catch 900 fish per day. On the other hand, a Chilean worker, can make 40 nets or catch 400 fish per day. The United States has an absolute advantage at producing both fish and nets. This means that the United States:
Systematic observation
A method of research involving careful and consistent observation of phenomena according to a plan or system.
Child-rearing
The process of supporting and promoting the emotional, physical, social, and intellectual development of a child from infancy to adulthood.
Systematic observation
A method of data collection where researchers observe and systematically record behavior according to a set protocol or code.
Naturalistic observation
A study technique where participants are examined in their usual surroundings with no intervention by the observer.
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