A study from 2019 showed cookies consent notices encouraged users to give their consent when there were no opt-out options. 26.9 percent of German desktop users tended to content to cookies' tracking when only an option was displayed
On the other hand, German users were more cautious when the cookie consent notice was less nudging. In fact, when the cookies presented a list of option, for instance for vendors' uses, the acceptance rate was zero.
Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice
Types of notice are described by the source as follows:
• Confirmation–Non-nudging: it has an “Accept” button which is not highlighted.
• Confirmation–Nudging: Same as the Confirmation–Non-nudging notice, but the “Accept” button is highlighted.
• Binary–Non-nudging: The “Accept” and “Decline” buttons are formatted the same way, neither is emphasized.
• Binary–Nudging: Same as Binary–Non-nudging but only the “Accept” button is highlighted in a contrasting color.
• Categories–Non-nudging: it has unchecked checkboxes. The “Necessary” category cannot be unchecked, as is common practice.
• Categories–Nudging: Same as Categories–Non-nudging but with pre-checked checkboxes for all categories.
• Vendors–Non-nudging: Similar to the categories variant, but the checkboxes correspond to the third party services used by our partner website.
• Vendors–Nudging: Same as Vendors–Non-nudging but with pre-selected checkboxes.
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Uni Hannover. (August 10, 2019). Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice [Graph]. In Statista. Retrieved December 19, 2024, from https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/
Uni Hannover. "Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice." Chart. August 10, 2019. Statista. Accessed December 19, 2024. https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/
Uni Hannover. (2019). Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice. Statista. Statista Inc.. Accessed: December 19, 2024. https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/
Uni Hannover. "Share of Desktop Visitors Interacting with Consent Notices on Websites in Germany between 2018 and 2019, by Type of Notice." Statista, Statista Inc., 10 Aug 2019, https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/
Uni Hannover, Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice Statista, https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/ (last visited December 19, 2024)
Share of desktop visitors interacting with consent notices on websites in Germany between 2018 and 2019, by type of notice [Graph], Uni Hannover, August 10, 2019. [Online]. Available: https://www.statista.com/statistics/1173455/desktop-consent-notices-interaction-germany/