Dual N-Back· Intermediate

Goal

Track both position and color simultaneously, judging whether each matches N steps back.

Rules

  • Colored squares appear sequentially on a 3x3 grid.
  • Press 'Position Match' if the position matches N steps back, 'Color Match' if the color matches. Press both if both match.
  • The first N stimuli have no comparison target, so no response is needed.

Don't try to memorize both streams at once. Remember positions as spatial images and colors by name.

Dual N-Back is the original task from Jaeggi et al. (2008) in PNAS, training working memory and fluid intelligence by simultaneously monitoring two stimulus streams.

  • Jaeggi et al. (2008) PNAS - Dual N-Back and fluid intelligence improvement
  • Soveri et al. (2017) meta-analysis - Transfer effects of Dual N-Back training