Limitations in Experimental Design of Herbal Tea Study

Easy Research Summaries Experimental Design

A group of researchers seeks to determine the potential health benefits of a new herbal tea blend they have developed. To assess its effects, they conduct a randomized controlled trial involving two groups of participants: one is given the herbal tea, while the other is given a placebo. After four weeks, they measure changes in various health indicators, including blood pressure and cholesterol levels.

Which of the following statements best describes a potential limitation of the experimental design used in this study?

The study does not include a large enough sample size to draw meaningful conclusions.

The participants might have different dietary habits that affect health indicators.

The study lasts only four weeks, which may not be sufficient to observe significant health changes.

The placebo group may not have been properly blinded to the nature of the tea being tested.

Hint

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