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The following hypothesis was investigated in a study: daily "doses of humor" will cause arthritis sufferers to use less pain medication and exercise longer. Which of the following is the independent variable?
Praised
The act of expressing approval or admiration for someone or something.
Learning Efforts
The exertion of physical or mental energy towards acquiring knowledge or skills through study, practice, or instruction.
Biological Psychology
A branch of psychology focused on the study of how the brain and other biological systems influence behavior and mental processes.
Brain Chemistry
Refers to the complex interactions between neurotransmitters, hormones, and other chemicals within the brain.
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