Question

A study of sleep patterns randomly selected participants in the study to sleep in either a dark room or a room with light. Which element of experiment design is known to be a part of this study?
1)randomization
2)blinding
3)replication

Answer 1

The element of experimental design that is known to be a part of this study is **1) randomization**. Randomization involves randomly assigning participants to different groups (in this case, sleeping in either a dark room or a room with light) to help eliminate bias and ensure that the results are generalizable.

Blinding and replication are not explicitly mentioned in the description provided. Blinding would involve keeping participants unaware of which group they are in to prevent bias in their responses, and replication would refer to repeating the experiment to verify results, which is not indicated in your description.