A Time Saver or A Waste of Data?
Background:
There may be time saved by asking a respondent to move through an attribute battery in an online survey j
ust once and rate two brands – rather than rate a single brand, item-by-item, only to go through the battery again to rate a second brand. However, could this slightly more time consuming method yield richer data?
Research Method:
Using standard security screening and a demographically representative online panel, 1,250 respondents, at least partly responsible for household shopping decisions, answered questions about sports drinks. About equal numbers of respondents rated a pair of brands one at a time (n=580) or both at
once (n=586) on 28 attributes. For each attribute, the average gap between ratings when brands were rated one at a time was tested for a significant difference against when brands were rated both at once.