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?

Randomized control and experimental groups
Comparison groups
Time series analysis
Randomized block design
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