Question

Karen is conducting an experiment examining how different flavors of toothpaste influence subjects' perception of the taste of a juice her company sells. Each subject brushed his or her teeth with one flavor, tasted the juice, indicated how the juice tasted based on several items on a survey, and then ate a cracker. Then the subject brushed his or her teeth with another flavor of toothpaste and tasted the juice, gave their response, and ate a cracker again. They did this with four different flavors of toothpaste. This is an example of which type of experimental design?
a. between-subjects
b. within-subjects
c. minimal-subjects
d. intra-subjects

Answer

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