The video discusses the importance of replication in scientific research, highlighting the reproducibility crisis where many studies fail to replicate. It explores causes such as statistical variability, misuse of p-values, and publication bias. The video suggests solutions like more replication studies, better understanding of p-values, and sharing data. It uses examples like social priming and power posing to illustrate these points.

Why is replication considered essential in scientific research?

• It helps in confirming the validity of results.

• It ensures that all studies are published in top journals.

• It allows for faster publication of studies.

• It reduces the cost of research.

What percentage of cancer treatment studies were successfully replicated by Amgen scientists?

• 50%

• 75%

• 25%

• 11%

What is one of the less nefarious reasons for the lack of replicability in scientific studies?

• Lack of funding for research

• Variability in data analysis methods

• Over-reliance on technology

• Intentional data falsification

What is a common misunderstanding about p-values in scientific research?

• They indicate the importance of a result.

• All of the above

• They measure the size of an effect.

• They are the only factor in determining statistical significance.

What is the impact of small sample sizes on study results?

• They increase the likelihood of skewed results.

• They ensure all results are significant.

• They reduce the need for replication.

• They lead to more accurate results.

What did the American Statistical Association emphasize about p-values in 2016?

• They should be the sole basis for scientific conclusions.

• They do not measure the size or importance of an effect.

• They are irrelevant in modern research.

• They should always be below 0.01.

What is the false discovery rate in the social priming example provided?

• 60%

• 25%

• 42.9%

• 10%

What is one proposed solution to improve the reproducibility of scientific research?

• Increasing the p-value threshold to 0.1

• Publishing more null results

• Reducing the number of replication studies

• Focusing only on significant results

What is one reason why replication studies are not as popular as new discoveries?

• They are less expensive.

• They attract less media attention.

• They are easier to conduct.

• They always confirm the original findings.

What is one benefit of sharing research data more widely?

• It increases public trust in science.

• It eliminates the need for replication.

• It reduces the need for peer review.

• It allows for faster publication.