Question

What term describes an experimental design where the experimental units are paired up based on a related connection, such as the same person before and after a treatment, twins, or same geographical location?

Options:
A) Unpaired design
B) Matched-pairs design
C) Multilevel design
D) Randomized design

Answer 1

The term that describes an experimental design where experimental units are paired based on a related connection is the Matched-pairs design.

Step-by-step explanation:

The experimental design where the experimental units are paired up based on a related connection, such as the same person before and after a treatment, twins, or the same geographical location, is known as the Matched-pairs design. This type of design can help to reduce variability because each pair of units is more similar to each other than to units in other pairs, which enhances the accuracy of the conclusions drawn from the experiment. For instance, if researchers are looking to evaluate the efficacy of a new medication by comparing patient outcomes before and after the treatment, utilizing a matched-pairs design would involve comparing the same patients' conditions before and after they receive the medication. This design is different from independent groups design, where participants are assigned at random to the groups, and each group receives a different treatment.