47. A researcher is interested in the level of consumers’ understanding of product nutrition labels. He is
interested in how the amount of time spent looking at the label influences understanding, so he’s using
a device that controls the amount of time a subject is exposed to the label. This device is called a
_____.
48. Research projects involving experimental manipulations that are implemented in a natural environment
are called _____.
49. Which experimental research design involves repeated measures?
interdependent-subjects design
50. 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?
51. In which experimental research design does each subject receive only one treatment combination?