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Table 1 Descriptive statistics for route learning and the cognitive test battery

From: Route knowledge and configural knowledge in typical and atypical development: a comparison of sparse and rich environments

  Mean SD Range
Age (years; months)    
 TD 8;6 1;6 5;5–11;4
 DS 19;11 4;0 14;5–26;5
 WS 22;0 7;8 13;5–44;5
BPVS (raw)    
 TD - - -
 DS 60 27 21–138
 WS 117 25 70–159
RCPM (raw)    
 TD 28 4.4 17–36
 DS 17 4.0 10–27
 WS 20 4.7 12–30
Route learning errors    
 Rich    
  TD 16 18 0–69
  DS 53 58 1–252
  WS 50 54 0–221
 Sparse    
  TD 14 18 0–97
  DS 42 42 1–173
  WS 43 37 3–126
  1. TD typically developing, DS down syndrome, WS Williams syndrome, BPVS British picture vocabulary scale, RCPM Raven’s Coloured Progressive Matrices