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Table 2 Mean performance scores both pre- and post-guidance/training

From: Detecting morphed passport photos: a training and individual differences approach

  Baseline Performance
Guidance Group Training Group
Hits (%) FA (%) d' c Hits (%) FA (%) d' c
30% Morphs 53 23 0.76 0.36 46 27 0.47 0.38
40% Morphs 39 23 0.38 0.55 40 27 0.31 0.46
50% Morphs 59 23 0.96 0.26 52 27 0.56 0.34
All Morphs 50 23 0.70 0.39 45 27 0.45 0.40
  Post-Guidance/Training Performance
Guidance Group Training Group
Hits (%) FA (%) d' c Hits (%) FA (%) d' c
30% Morphs 65 7 2.15 0.60 74 7 2.48 0.50
40% Morphs 73 7 2.41 0.47 79 7 2.69 0.39
50% Morphs 75 7 2.32 0.52 85 7 2.69 0.39
All Morphs 71 7 2.29 0.53 79 7 2.62 0.43
  1. Abbreviations: d′ Detection sensitivity, c Criterion score, FA False alarm
  2. Note: Because of the experimental design, when assessing morph detection sensitivity at each morph grade, the FA rate remains constant as the different morph grades were presented within the same array
  3. All Morphs show performance averaged across morph grades (30%, 40%, 50%)