Select the studies below that use a matched pairs experimental design.

A study is designed to test which of two new methods is better at teaching children in first grade to read.

Children in first grade are selected at random and are paired together based on reading ability.

One student is taught with one method, and the other is taught with another method.

children in 1st grade are selected randomly and paired together based on reading ability

Step-by-step explanation:

Matched pair experimental design is a design in which two separate groups are assigned to each treatment but every individual in one group is matched with another individual in the other group.

Based on the above definition, the first scenario in the question uses a matched pairs experimental design as students are matched based on reading ability.