Frequently Asked Questions (FAQ)

It is a cognitive task in which you track audio signals and visual positions, comparing each with the stimulus N steps earlier. Practice reliably improves the trained task; broader transfer remains debated.

Research consistently shows task learning and sometimes transfer to closely related working-memory tasks. Findings on broad transfer to intelligence or everyday performance are mixed. See the Evidence Center.

For steady progress, it is recommended to train daily for 15–20 minutes (about 1 session of 20 rounds). Consistency is key, not the length of a single workout. First results are usually visible after 2–3 weeks of daily practice.

No. The trainer runs entirely in any modern web browser on both desktop and mobile devices. All you need is an internet connection.

The trainer is for adults who want to practice and measure N‑Back performance. It is not intended to prevent age-related decline or diagnose or treat ADHD or any medical condition.

Learning speed varies. Track completed rounds, Accuracy, d′, and your own task performance. The app does not promise a fixed timeline or general-intelligence gain.

The trainer's algorithm analyzes your results. If you achieve more than 80% correct matches, the N-level increases for the next game (e.g., from 2-Back to 3-Back). If correct answers fall below 50%, the N-level decreases.

Yes! For desktop training, use the keys: F to confirm a visual position match, and J to confirm an audio letter match.

This is completely normal at first. Try temporarily switching the difficulty to 1-Back in the game setup, or choose a single-mode training (positions only or audio only) to get used to the gameplay mechanics.

If you have an active unfinished session, you can reset your current daily progress by clicking the "Start New Training" button on the training tab — the system will prompt a warning and restart the session.

To completely wipe your entire training history and stats, clear the local storage and cache for this website in your browser settings.

DualNBackApp is not an ADHD treatment or diagnostic tool. If attention symptoms affect daily life, seek advice from a qualified healthcare professional.

Tests (like Digit Span Backward) measure your working memory capacity and reaction time in a calm state. The results help to automatically determine your optimal starting difficulty (N-Back) and build a personal cognitive profile.

Dual N-Back places a heavy load on the brain. The only common side effect is temporary mental fatigue.

It is not recommended to train during severe headaches, sleep deprivation, or extreme exhaustion. Taking breaks is crucial, as neural connections strengthen during the recovery and rest phases.

Yes. All your statistics, high scores, settings, and progress are automatically saved in your browser's local storage. You can safely close the site and resume training at any time.