Adaptation of the Family Check-Up Online

Telehealth Usability Questionnaire

We will use the Telehealth Usability Questionnaire(TUQ) to assess the quality of the program's technology interface and telehealth interaction. TUQ includes 21 items and covers five domains of telehealth system usability: usefulness (3 items; e.g., "FCU Online improves my access to health and preventative services"), ease of use and learnability (3 items; e.g., "It was simple to use this system"), interface quality (4 items; e.g., "The way I interact with this system is pleasant"), interaction quality (4 items; e.g., "I could easily talk to the coach using the telehealth system"), reliability (3 items; e.g., "Whenever I made a mistake using the system, I could recover easily and quickly"), and satisfaction and future use (4 items; e.g., "I feel comfortable communicating with the coach using the telehealth system"). All TUQ subscales have shown good internal consistency (Cronbach's αs \> 0.8) and have been validated in Spanish.

Consumer Satisfaction Questionnaire

Consumer satisfaction will be measured using an adapted version of a measure that has been used in other brief motivational interviewing interventions (Stormshak et al., 2005). Participants will reflect and report on their perceived quality of the modules they acccess and home practice. At the end of the program, participants will receive the adapted consumer satisfaction questionnaire to report their satisfaction.

Parenting Sense of Competency

The Parenting Sense of Competency Scale (PSOC) will be used to measure parent efficacy. PSOC is a 19-item self-report measure that asks parents to what extent they agree or disagree with the statements regarding their parenting. PSOC has two subscales, including parent Self-efficacy (e.g., "Even though being a parent could be rewarding, I am frustrated while my child is at his/her present age.") and parent satisfaction (e.g., "I would make a good role model for new parents who needed to learn what it takes to be a good parent."). PSOC has overall good internal consistency (Cronbach's alpha = 0.82), and has been used with Spanish speaking parents. Parents respond on a 6-point Likert scale (1 = strongly agree to 6 = strongly disagree).

Latino Immigration Family Socialization Scale

Socialization will be measured by the Latino Immigrant Family Socialization Scale (LIFS). LIFS is a 27-item self-report measure that contains six subscales, including adapt (5 items; e.g., "Encourage TC to learn to live with discrimination"), advocate (4 items; e.g., "Tell TC to seek help when he or she is discriminated"), cultural socialization (5 items; e.g., "Talk to TC about his or her roots and heritage"), educate about nativity and documentation (5 items; e.g., "Talk to TC about differences in rights based on immigration status"), value diversity (5 items; e.g., "Talk to TC about differences in cultures"), and promote mistrust (5 items; e.g., "Advice TC to be careful of people who are members of other racial or ethnic groups"). For each item, parents report how often they use these strategies on a 5-point Likert scale (1 = never to 5 = always). LIFS has been validated and shown acceptable internal consistencies (Cronbach's alphas \> 0.70).

Strengths and Difficulties Questionnaire

The Strengths and Difficulties Questionnaire (SDQ) is a brief behavioral screening tool used to assess emotional and social well-being in children and adolescents. It evaluates five key areas-emotional symptoms, conduct problems, hyperactivity/inattention, peer relationship issues, and prosocial behavior-providing a balanced view of both strengths and challenges. This measure will identify areas where the intervention has improved internalizing and externalizing behaviors.

CRAFFT

The CRAFFT is well-used adolescent substance use screener for adolescents 12-21 for clinical use. Example items include, "Do you ever use drugs or alcohol while you are by yourself (alone)?" and "Have you ever gotten in trouble while you were using drugs and alcohol?" The CRAFFT has been shown to predict DSM-5 substance use disorders among adolescents. Chronbach's alpha was α = .79 and the screener has been validated in Spanish.