The differential threshold refers to the ability to detect a difference or changes between two items. The minimum difference that can be detected is known as the j.n.d. (just noticeable difference). Colgate have used the differential threshold when they created advertisements marketing to people a new line of dental floss. In the advertisement there is two people with plark in their teeth which you are drawn to, although the people have defects like missing an ear. This smart advertisement makes individuals realise how important dental hygiene is and the ability to detect the differences in the photos seems easy but is not what you are looking for in a hygiene advertisement.
Colgate have also looked at the differential threshold when they market to young people, by making it look like there is a joy when brushing teeth which influences them to brush their teeth. The children seeing these advertisements are drawn by the colours and music which adults would not realise.
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