## 9 Survey on End-User Perception  
To better assess the anticipated user acceptance of the AURORA MINDS platform, a focused survey was conducted, with 40 participants recruited through the consortium's existing communication channels. The respondents did not directly interact with the platform but were instead presented with a detailed overview describing the platform's goals, privacy architecture, and key features. This approach aimed to capture early impressions regarding usability, data protection, transparency, diagnostic reliability, and overall value. Participants evaluated each item on a 10-point Likert scale, ranging from 0 (not at all) to 10 (extremely), reflecting their subjective perceptions based on the descriptive information provided. The results are illustrated in Table 7.  
The survey responses highlight the current landscape of digital health app adoption among caregivers and clinicians. The average score of 5.6 for current usage of ADHD apps reveals a moderate familiarity with digital tools for behavioral management. While a segment of the population is accustomed to using such applications, another segment remains less engaged, possibly due to concerns about complexity, cost, or trustworthiness. These findings reinforce the need for AURORA MINDS to prioritize user onboarding strategies and to provide clear, accessible pathways for first-time users. Moreover, the notably low average score (4.2) on comfort with sharing personal information reaffirms \begin{table}
\begin{tabular}{l c} \hline \hline
**Survey Question** & **Average Score** \\  & **(0 to 10)** \\ \hline Q1: Current use of ADHD-related mobile applications & 5.6 \\ Q2: Comfort level with sharing personal data on such platforms & 4.2 \\ Q3: Importance of tracking progress and behavioral insights & 8.9 \\ Q4: Likelihood of using an app with transparent data practices & 9.1 \\ Q5: Satisfaction with the privacy and security of AURORA MINDS & 8.1 \\ Q6: Confidence in the platform’s data accuracy and reliability & 7.9 \\ Q7: Likelihood of recommending the platform to others & 7.6 \\ Q8: Likelihood of long-term use of the platform & 7.4 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Survey questions and corresponding average scores. that privacy concerns remain a barrier to wider adoption. This strengthens the platform's rationale for integrating Privacy-Enhancing Technologies and Federated Learning from the outset. The survey also underscores a strong user preference for features that offer transparency, insight, and control. Participants rated the importance of tracking their child's behavioral patterns (Q3) and receiving transparent explanations about data handling (Q4) among the highest in the survey, with average scores of 8.9 and 9.1, respectively. These results demonstrate that parents and clinicians are not only interested in diagnostic tools but also in applications that provide actionable insights and offer full transparency about how sensitive data is managed. In this respect, the platform's modular design--especially the use of Privacy-ABCs for managing data access--is well aligned with stakeholder expectations. High satisfaction with the described privacy and security protocols (Q5) and strong confidence in data accuracy (Q6) further validate the design philosophy of AURORA MINDS, suggesting that the project's foundational choices resonate positively with its intended users. Finally, indicators of long-term platform viability and community-driven dissemination were encouraging. The likelihood of recommending the platform to others (Q7) and the likelihood of sustained use over time (Q8) received solid average scores of 7.6 and 7.4, respectively. These figures point to a promising trajectory for user retention and organic growth, provided that the platform continues to evolve in line with user needs. Together, the results suggest that AURORA MINDS is perceived not only as a secure and transparent solution but also as a potentially essential tool for managing ADHD more effectively.