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Table 1 Mean (and SD) for the percentage correct, latency (s), and efficiency ratio for the five sums

From: Interactivity mitigates the impact of working memory depletion on mental arithmetic performance

  Articulatory suppression
  Without With
  Percentage correct
Interactivity M SD M SD
Low 56.0% 27.7% 26.9% 31.7%
High 63.5% 28.2% 44.6% 29.5%
  Latencies
  M SD M SD
Low 38.1 16.4 41.5 21.2
High 37.4 14.8 51.2 27.2
  Efficiency ratio
  M SD M SD
Low 1.20 0.99 0.68 0.95
High 1.16 0.70 0.99 0.84