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Table 1 Means and standard deviations for demographic and outcome measures by condition

From: Assessing the feasibility of a classroom-based visual attention training program targeting academics for students with extremely low IQ

  Treatment (n = 11) Active control (n = 9) Excluded (n = 6)
M SD R M SD R M SD R
Age 15.86 0.68 15–17 15.52 0.95 13.7–17.1 15.27 0.86 14.2–16.8
FSIQ 59.73 16.19 40–86 50.50 7.45 40–60 52.50 12.37 40–72
VCI 55.27 11.56 45–82 51.88 10.44 45–69 47.50 6.12 45–60
PRI 69.45 22.41 45–111 53.62 6.32 45–66 62.83 17.29 45–89
CPT-3 – d’ 62.82 10.54 44–75 69.44 4.48 61–74 67.33 2.160 64–70
Pre-WIAT WR 59.09 16.78 40–85 48.44 10.67 40–65    
Pre-WIAT RC 51.45 10.80 40–70 44.56 7.07 40–59    
Pre-WIAT FA 62.55 21.78 40-106 43.56 7.88 40-64    
Pre-WIAT FS 53.73 16.08 41–87 42.89 2.03 41–47    
  1. Note. Statistics presented for demographic variables of (i) intelligence as measured by the WASI-II via Full-Scale IQ (FSIQ), Verbal Comprehension Index (VCI), and Perceptual Reasoning Index (PRI); and (ii) attention as measured by the CPT-3 d’ t score. Baseline performance on the academic outcomes was measured by the WIAT-III via Word Reading (WR), Reading Comprehension (RC), Fluency-Additions (FA), and Fluency-Subtractions (FS)