Which variation of MSW involves replacing selected items back into the array after each trial?

Which variation of MSW involves replacing selected items back into the array after each trial?

• A. Multiple-stimulus without replacement
• B. Paired-stimulus
• C. Multiple-stimulus with replacement
• D. MSWO

Answer: (C)

The main idea being tested here is how the chosen item is treated after each trial in a multiple-stimulus preference assessment. In the with-replacement version, after a stimulus is selected, it is placed back into the array for the next trial. The set of stimuli stays the same across all trials, so trials are independent and the same item can be chosen again and again. This setup emphasizes consistent preferences and can yield repeated selections of the same item. By contrast, removing the chosen item after a trial (without replacement) shrinks the array over time and is used to derive a rank order of stimuli, since items aren’t available once they’re chosen. Understanding this distinction helps you anticipate how data might look: with replacement you may see repeated selections of the same item, while without replacement tends to produce a sequence that reflects a hierarchy as items disappear from the pool.

The main idea being tested here is how the chosen item is treated after each trial in a multiple-stimulus preference assessment. In the with-replacement version, after a stimulus is selected, it is placed back into the array for the next trial. The set of stimuli stays the same across all trials, so trials are independent and the same item can be chosen again and again. This setup emphasizes consistent preferences and can yield repeated selections of the same item.

By contrast, removing the chosen item after a trial (without replacement) shrinks the array over time and is used to derive a rank order of stimuli, since items aren’t available once they’re chosen. Understanding this distinction helps you anticipate how data might look: with replacement you may see repeated selections of the same item, while without replacement tends to produce a sequence that reflects a hierarchy as items disappear from the pool.