Question

The Open Science movement seeks to help fix the replication crisis. How?

A. By encouraging open data—that way scientists can check each other’s work.

B. By encouraging open materials—that way it will be easier and more common to conduct replications.

C. By encouraging preregistration—that way it will be more clear what analyses are exploratory vs. planned, and researchers will not be able to ‘p-hack’.

D. All of the above Whitney is planning a replication of a previously published study.

The original study found d = 0.70 with a MoE of 0.65. What considerations are important for Whitney in planning a sample size?

A. She should have at least the sample size of the original study.

B. She should try to achieve an MoE smaller than the original study.

C. If possible, she should try to obtain an MoE that is less than ½ as big as the expected effect.

D. All of the above. lice conducts a simple independent groups study with 20 participants per group (40 participants in total).

Steve examines the same research question, but uses a simple paired design (within-subjects). Steve also has 40 participants. Both studies have the same dependent variable. Based on this:

A. Alice will probably have a smaller MoE.

B. Alice will probably have higher power.

C. Steve will probably have a smaller MoE.

D. Trick question—there is no way to predict anything about MoE or power based on this information.

For a paired design, power and precision are related to sample size and to ______.

A. The correlation between repeated measures, the higher the better

B. The correlation between repeated measures, the lower the better

C. Meta-analysis, the more previous meta-analyses the better

D. Meta-analysis, the fewer previous meta-analyses the better

In the NHST approach, one plans for power. In this approach:

A. You want low power.

B. Power is the chances of not making a Type II error; it is the chance of rejecting the null if the null is actually false.

C. Power depends just on the alpha you set—so the approach is easy and doesn’t really depend on sample size at all.

D. All of the above.

Answer 1

* Open science movement helps to fix the replication crisis by-

Ans- All of the above

So, that research findings can be checked and verified at every step.

* Ans - Option [B] she should try to achieve an MoE smaller than the original study.

* Ans Option [D] There is no way to predict anything about MoE or power based on this information.

* Ans- Option [A] The correlation between repeated measures, the higher the better.

* Ans- Option [B] Power is the chances of not making a type II error, it is the chance of rejecting the null if the null is actually false.