Mark conducts a study for his research methods class to determine if consuming caffeine causes people to perform better on cognitive tasks.In his study,he gives half of his participants a glass of water and half of his participants a glass of cola,and then has them attempt to solve 15 math problems.He finds that people who drink caffeine beforehand solve more math problems than those who drink water beforehand.

-Mark decides to conduct a variation of the original study in which he measures participants' ability to solve verbal analogies as the cognitive task instead of measuring their ability to solve math problems.He finds that people who drink caffeine beforehand solve more verbal analogies than those who drink water beforehand,suggesting caffeine consumption causes improved cognitive performance.This study is known as a:
A)Statistical replication
B)Replication-plus-extension
C)Conceptual replication
D)Secondary replication

Question

Mark conducts a study for his research methods class to determine if consuming caffeine causes people to perform better on cognitive tasks.In his study,he gives half of his participants a glass of water and half of his participants a glass of cola,and then has them attempt to solve 15 math problems.He finds that people who drink caffeine beforehand solve more math problems than those who drink water beforehand.

-Mark decides to conduct a variation of the original study in which he measures participants' ability to solve verbal analogies as the cognitive task instead of measuring their ability to solve math problems.He finds that people who drink caffeine beforehand solve more verbal analogies than those who drink water beforehand,suggesting caffeine consumption causes improved cognitive performance.This study is known as a:
A)Statistical replication
B)Replication-plus-extension
C)Conceptual replication
D)Secondary replication

Quizplus · Accepted Answer

This study is a conceptual replication because it tests the same hypothesis (caffeine consumption improves cognitive performance) using a different cognitive task (verbal analogies). By using a different task, Mark is extending the external validity of his original findings to a different context, which is characteristic of a replication-plus-extension study (choice B). However, the fact that he is still testing the same hypothesis makes it a conceptual replication (choice C). A statistical replication (choice A) would involve repeating the original study exactly as it was done to see if the same results are obtained, while a secondary replication (choice D) is not a well-defined term in the literature.

Mark Conducts a Study for His Research Methods Class to Determine