; and (B) given without the exchange of any financial or other incentives for such consent. 3. Unfair and deceptive acts and practices relating to the manipulation of user interfaces (a) Conduct prohibited (1) In general It shall be unlawful for any large online operator— (A) to design, modify, or manipulate a user interface of an online service with the purpose or substantial effect of obscuring, subverting, or impairing user autonomy, decision making, or choice to obtain consent or user data; (B) to conduct a behavioral or psychological experiment, research, or study of users of an online service, except with the informed consent of each user involved; (C) to design, modify, or manipulate a user interface of an online service with the purpose or substantial effect of cultivating compulsive usage, including video auto-play functions initiated without verifiable consent of a user; or (D) to design, modify, or manipulate a user interface on an online service, or portion thereof, that is directed to an individual under the age of 18, with the purpose or substantial effect of increasing usage of an online service through which a user interacts with other users without parental consent. (b) Duties of large online operators Any large online operator that engages in any form of behavioral or psychological experiment, research, or study based on the activity or data of its users shall— (1) disclose, on a routine basis, but not less than once each 90 days, the general purpose of any such behavioral or psychological experiment, research, or study to each user whose user data is or was during the previous 90-day period subject to or included in any such behavioral or psychological experiment, research, or study