Publisher Description
N-Back Memory Training - Boost your IQ & working memory with the dual n-back task, supported by science
Research suggests that n-back training may lead to gains in fluid intelligence (IQ) and working memory ability (Soveri et al., 2017).
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Instructions:
The object of the game is to hold various items in your working memory and actively update these items as the game progresses. With each new trial, press the match button if the current item matches the item that occurred a given number of trials in the past. The term “n-back” denotes how many trials ( n ) in the past you need to remember. By default, you will begin on 2-back, so press the match button if the current item matches the item that occurred 2 trials back in the past. For a simple demonstration of how to play single 2-back, see this video: https://www.youtube.com/watch?v=qSPOjA2rR0M .
Options:
N-Back Memory Training allows you to choose from a diverse set of items to store in working memory:
• the position of a square on a 3 x 3 grid
• sounds (letters, numbers, or piano notes)
• images (shapes, national flags, sports equipment)
• colors
By default, the app starts on dual n-back, using positions and sounds (letters). The “dual” in dual n-back simply denotes how many different item types you will need to remember. You may choose any combination of item types, from single n-back to quad n-back.
Track Progress and Compete with Other Users:
Track your daily progress using customizable, interactive graphs. You can also compare your high scores to other users around the world in real-time with premium mode (upgrade available within the app).
Scoring:
Details:
A' = .5 + sign(H - F) * ((H - F)^2 + abs(H - F)) / (4 * max(H, F) - 4 * H * F)
where
Hit Rate (H) = hits / # signal trials
False-positive Rate (F) = false pos / # noise trials
see Stanislaw & Todorov (1999)
Lure Trials:
Within Settings, you can control the percentage of lure trials, which make the task more difficult. Lure trials present stimuli that occurred n-back plus or minus one trial. That is, they are offset one trial from the target trial (n-back).
Customize:
Please send any comments, questions, or concerns to nback.memory.training@gmail.com .
Thanks for playing!
E. A. L.
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References
Soveri, A., Antfolk, J., Karlsson, L., Salo, B., & Laine, M. (2017). Working memory training revisited: A multi-level meta-analysis of n-back training studies. Psychonomic bulletin & review , 24 (4), 1077-1096.
Stanislaw, H., & Todorov, N. (1999). Calculation of signal detection theory measures. Behavior research methods, instruments, & computers , 31 (1), 137-149.
In-app background image credit: Réseau de neurones. If then else / Wikimedia, CC BY-SA