Examlex
The formula for the Spearman correlation coefficient was derived from the formula for the Pearson correlation coefficient.
Extrinsic Motivation
Involves performing an action or behavior in order to receive external rewards or avoid punishments.
Intrinsic Motivation
The drive to engage in activities for their own sake and for the personal rewards they provide, rather than for some external reward.
Source of Energy
Any physical or chemical substance that can be converted to provide power, such as sunlight, fossil fuels, or nuclear power.
Brain
The organ in the head of vertebrates that controls the body's functions, emotions, and thoughts.
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