Using purity based messages to increase intention to receive the HPV vaccine

INTERVENTION: Participants will be randomized using a Qualtrics algorithm. The algorithm randomly presents either the control statement, the control statement + control image, experimental statement, or experimental statement + experimental image while ensuring that group numbers are approximately balanced between the 4 groups. This interventional study will randomize participants to receive either: Control: An adapted CDC statement on the HPV vaccine Control + Image: An adapted CDC statement on the HPV vaccine with an image of an HPV vaccine dose in a vial Intervention: a message containing a brief description of a Tinder date leading to HPV infection. Intervention + image: a visual message containing images of genital warts and a brief description of a Tinder date leading to HPV infection. Immediately after the intervention/control has been reviewed by the participant, intent to receive the HPV vaccine is measured once during a post‐intervention survey. The method of measurement is a single question asking if the participants intend to initiate (if they have received 0 HPV vaccine doses) or continue (if they have received 1‐2 HPV vaccine doses) the HPV vaccine series. CONDITION: Sexually transmitted disease awareness ; Infections and Infestations PRIMARY OUTCOME: Intent to receive the HPV vaccine, measured once during a post‐intervention survey administered immediately after the visual message has been reviewed by the participant. (The method of measurement is a single question asking if the participants intend to initiate [if they have received 0 HPV vaccine doses) or continue (if they have received 1‐2 HPV vaccine doses] the HPV vaccine series) SECONDARY OUTCOME: ; 1. Vaccine confidence as measured by the Vaccine Confidence Scale at post intervention; 2. Purity/liberty measured using the moral foundations questionnaire before the intervention; INCLUSION CRITERIA: 1. Between 18 and 23 years of age (inclusive) 2. Resident of the United States 3. Has received no more than 2 doses of the HPV vaccine