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

Table 1 Item measurement properties of the 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

ISSN: 1936-6434