The Interactive Media and Gender-related Stressors and Strengths Study

A validated scale by Weiner et al., 2017 will be used to assess feasibility. It has 4 items assessing dimensions of feasibility (e.g., "The digital toolkit seems like a good match"), with response options ranging from Completely agree (1) to Completely disagree (5). Scores can range from 4 to 20 and lower scores suggest greater feasibility.

A validated scale by Weiner et al., 2017 will be used to assess acceptability. It has 4 items assessing perceived acceptability of the digital toolkit (e.g., "The digital toolkit was appealing to me"), with response options ranging from Completely agree (1) to Completely disagree (5). Scores can range from 4 to 20 and lower scores suggest greater acceptability.

2 relevant items from a Intervention Appropriateness Measure (Weiner et al., 2017) e.g., ("The digital toolkit seems easy to use"). Response options range from Completely agree (1) to Completely disagree (5). Scores can range from 2 to 10 and lower scores suggest greater appropriateness.

The Client Satisfaction Questionnaire (Larson, 1979) which is a validated 8-item scale will be used to assess . Response options are tailored to specific items, with higher scores always indicating greater satisfaction, for example:

i. How would you rate the quality of the digital toolkit? Response options: Poor (1) to Excellent (5) ii. If you were to seek help again, would you come back to the toolkit? Response options: No, definitely not (1) to Yes, definitely (4) iii. To what extent has the toolkit met your needs? Response options: Almost all of my needs have been met (4) to None of my needs have been met (1) iv. How satisfied are you with the amount of information you received in the toolkit? Response options: Quite dissatisfied (1) to Very satisfied (4) v. Has the toolkit helped you to deal more effectively with your problems? Response options: Yes, it helped a great deal (4) to No, it seemed to make things worse (1)

The Perceived Social Media Literacy Scale (Tandoc et al., 2021), a validated 8-item scale will be used to assess social media literacy which incudes technical competence, informational awareness, and privacy and algorithmic awareness. there are 5 response options- from Strongly disagree (1) to Strongly agree (5). Scores can range from 8 yo 40 and higher scores are correlated with greater social media literacy skills.

3-item measure adapted from Boer (2022). Response options will range from Never or less than once a week (0) to More than 40 times per week (7). Higher scores are correlated with greater intensity of social media use.

Internalization-General 5-items subscale of the Sociocultural Attitudes Towards Appearance Scale-3 (SATAQ-3; Thompson et al., 2004); 5-item subscale adapted for social media per Gordon et al. (2020). Response options ranging from Definitely disagree (1) to Definitely agree (5).

Alcohol use will be assessed with the US Alcohol Use Disorders Identification Test (AUDIT), which is a validated 3-item measure with questions about past year frequency of drinks consumed, number of drinks consumed on an average day of drinking, and how often the respondent had more than five drinks on one occasion. Response options range from Never (0) to Daily (6), 1 drink (1) to 10 or more drinks (7), and Never (0) to Daily (6), respectively. Higher scores are correlated with more alcohol use.

Nicotine/tobacco use, collected via two items about nicotine products used and frequency of use, with response options ranging from Multiple times throughout the day (1) to Less than once a month (7). Lower scores are associated with more tobacco use.

Performance enhancing drugs and supplements, collected via one question with a list of 6 performance enhancing drugs and supplements; Participants will select those used in the past three months (yes [1]/no [0]).

Past-month cannabis use, collected via 1 question about frequency of use of cannabis products that include tetrahydrocannabinol (THC) over the past 30 days, with response options ranging from Every day (1) to Less than once per week (5), or "have not used" (0).