A Group of 25 Labrador Retrievers, and Their Owners, Are

A group of 25 Labrador retrievers, and their owners, are brought to the research lab, one at a time. The Labrador retrievers are shown various stimuli, including a squirrel that runs along a wire at the top of the lab, to elicit barking. Then the owners command the dogs to stop barking, and the stimulus is repeated. The duration of barking is measured. Then the owners are taught a different technique for quieting their barking dogs. A week later, the dogs and their owners return to the lab, the stimuli are introduced, and the duration of barking is measured. This is an example of what type of design?

A) Posttest-only design with comparison group
B) One-group pretest-posttest design
C) Pretest and posttest design with comparison group
D) Time series design with repeated reversal