- Short answer
A good benchmark for ADHD-friendly effectiveness combines process, outcome, and engagement signals to reveal how a design supports attention, pacing, and timely feedback. Baselines should reflect ADHD variability (hyperfocus vs distractibility) and emphasize cognitive load, not just accuracy.
### Deep dive
- Foundations (optional)
Key terms: attentional control, executive function, reward sensitivity, engagement. Assumptions: ADHD cognition varies across individuals; effective design reduces cognitive load and provides frequent, meaningful feedback. Baselines should capture typical user variance, not a single phenotype.
- Core explanation
Effective benchmarks mix:
- Process baselines: typical time-on-task variability, navigation steps, interruptions, and adherence to workflows. These reveal whether the design scaffolds attention and reduces cognitive strain.
- Outcome baselines: task success, error rate, and time to completion contextualized by task complexity and pacing goals.
- Engagement baselines: streaks/micro-rewards, practice consistency, and user-initiated help requests as proxies for clarity and motivation.
- Subjective baselines: perceived cognitive load and control, gathered via short self-reports after tasks.
A practical approach: establish a multi-macetric baseline set early, then track within-subject changes across iterations, emphasizing improvements in pacing and reinforcement, not just accuracy.
- Nuances
- Pitfalls: relying on accuracy alone can miss fatigue or motivation shifts; short-term gains may hide long-term disengagement.
- Edge cases: hyperfocus users may finish quickly with low effort; some users need frequent prompts. Personalization improves validity.
- Contrast: standard usability metrics prioritize efficiency, which may miss pacing and reinforcement dynamics important for ADHD users.
### Next steps
- Next questions to explore: How would you tailor a metric suite for a specific domain (e.g., study apps) focusing on pacing, modular content, and personalization? What baselines best capture ADHD-friendly effectiveness without bias toward a single phenotype?