Asked by Teddy Batman on May 11, 2024
Verified
In an investigation of the effects of caffeine on concentration,half the participants were given colas that contained caffeine and half were given decaffeinated colas.In this study,what is decaffeinated cola
A) a random factor
B) a confounding variable
C) a dependent variable
D) a placebo
Placebo
A substance with no therapeutic effect, used as a control in testing new drugs.
Decaffeinated Cola
A type of cola soft drink that has had most of the caffeine content removed through various processing methods.
- Understand the placebo effect and its relevance in experimental designs.
Verified Answer
NT
Ng?c Th?o Nguy?nMay 16, 2024
Final Answer :
D
Explanation :
Decaffeinated cola is a type of placebo, which is an inactive substance given to the control group in an experiment to ensure that any observed effects are actually due to the treatment being tested (in this case, caffeine).
Learning Objectives
- Understand the placebo effect and its relevance in experimental designs.
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