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Table 1 Item measurement properties of the deep evolutionary time visual instrument (DET-Vis)

From: Design and validation of a deep evolutionary time visual instrument (DET-Vis)

Item Item difficulty
index
Discrimination coefficient Cronbach’s alpha,
if item deleted
Factor loadings Communalities
1 0.75 0.49 0.70 0.76 0.90
2 0.79 0.39 0.71 0.66 0.93
3 0.70 0.53 0.69 0.81 0.84
4 0.59 0.25 0.74 0.43 0.99
5 0.79 0.43 0.71 0.70 0.67
6 0.69 0.46 0.70 0.73 0.75
7 0.81 0.43 0.71 0.73 0.85
8 0.56 0.38 0.72 0.62 0.96
9 0.67 0.38 0.72 0.61 0.82
10 0.73 0.25 0.73 0.46 0.96