Frequently Asked Questions (FAQ)

It is a scientifically proven cognitive training exercise where you simultaneously track audio signals (letters) and visual signals (square positions), comparing them to the step N steps backward.

The scientific effectiveness of Dual N-Back is backed by clinical research. In 2008, a study by Dr. Susanne Jaeggi demonstrated that regular training not only expands working memory capacity but also increases fluid intelligence (the ability to solve novel problems).

Later, a 2017 study by Johns Hopkins University confirmed that this exercise significantly outperforms other brain training methods, showing greater improvements in focus and neural connectivity in the prefrontal cortex.

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 beneficial for anyone looking to boost cognitive performance.

It is widely used by students preparing for exams, professionals dealing with large volumes of information, software developers keeping complex code structures in mind, professionals managing multitasking environments, seniors aiming to prevent age-related cognitive decline, and individuals with ADHD looking to improve self-regulation and focus.

Initial cognitive changes, such as improved focus, faster attention switching, and better short-term memory recall, typically become noticeable within 2 to 3 weeks of daily 15-20 minute sessions.

Sustained improvements in fluid intelligence and working memory capacity are scientifically documented after 20 days of regular training.

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.

Yes, many studies confirm that Dual N-Back training helps strengthen executive functions of the prefrontal cortex, which improves focus and reduces impulsivity and distractibility symptoms in individuals with ADHD.

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.