A graduate student wants to test whether a reading curriculum is better than a computerized reading lab application, by comparing the reading test scores between a group who only gets the lab and another group who only gets the curriculum.Students are assigned to one or the other reading instructional group based on their schedules:lab is in the morning, the curriculum is offered in the afternoon.

What type of experimental design is this?

Comparison groups

Randomized control and experimental groups

Time series analysis

Randomized block design