Capacity Level 2
How to play the Capacity, Level 2 Game
This is the classic n-back game, and is a more complex extension of the single n-back game. Your n-back level in this game is a standard measure of your working memory capacity.
Dual N-Back training
The Dual Training Mode works in exactly the same way as Visual Mode and Audio Mode, starting with an ‘n-back’ = 1. The difference is that you now have to keep track of not just one modality but two – simultaneously! At the same time as the square moves from location to location, you hear phonologically distinct letters. You must press the ‘F’ key if there is a visual match and the ‘L’ key if there is an audio (letter) match. If there is a match for both at the same time, you must press both the ‘F’ key and the ‘L’ key together. Once you do well enough at N=1, you progress to N=2. In the 2-back example below there are 2 visual (square) matches and 2 verbal (letter) matches in 6 moves.
If you reach a certain level of proficiency in both the visual task (changing square) and the audio task (changing letters), the n-back level for the next set of 20 moves increases by one. If perform less well the n-back level decreases by one. Otherwise the n-back level stays the same.
To start each new block, you do not need to press the arrow button – you can simply press the space bar. You can pause the game at any time by clicking the ‘clock’ button. Just click it again to continue. You can cancel the block at any time by clicking the ‘trash’ button.
After each 10 block training session a window will appear giving you graphical feedback on how well you have done, as described above.
Going up n-back levels
The rules for going up or down n-back levels are as follows:
- If you got 90% or more in the game, the memory gap for the next block increases one n-back level.
- If you do less well, the gap decreases one n-back level for the next game.
- Otherwise the n-back level stays the same.
Because the difficulty level of the training task always adapts to your current performance level, the brain training always remains challenging to you: it is never too easy, nor too difficult to become frustrating and demotivating. This is what is known as ‘adaptive training‘, and it is critical for real working memory and IQ gains. In the default game, once you reach a certain level of n-back proficiency, you unlock the next game.
Once you have completed 10 blocks in practice mode two windows open – a graph giving your average n-back performance. In the graph, if you click on the ‘percent correct’ button, a ‘percentage correct’ graph opens.
Press the forward arrow button to continue. You can access this Level’s graph any time from the Games Panel by clicking the graph icon. There is one performance graph for each of the Games in IQ Prime.
Your goal is always to increase your n-back level (a measure of your working memory capacity) and your total IQ Prime score shown in the top of the game frame. Your IQ Prime game score is calculated based on both your n-back level and the difficulty rating of the training options you select in the Options Panel.
When you reach a level of competence in this game (based on your proficiency setting in the Games Panel) you will unlock the next game.