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Table 6 Ordered item locations, fit residuals and probabilities for the language and cognitive development domain

From: The Early Development Instrument: an evaluation of its five domains using Rasch analysis

Item Item description Location SE Fit residual Chi square Probability
1 handle a book −3.86 0.35 −1.34 3.12 0.874
20 sort by common characteristics −2.25 0.19 −0.40 3.50 0.835
21 use one-to-one correspondence −1.71 0.16 −2.53 9.77 0.202
2 interested in books −1.64 0.16 −2.29 5.40 0.611
25 recognise shapes −1.21 0.14 0.54 7.89 0.343
19 interested in number games −0.81 0.13 −0.34 8.43 0.296
18 interested in maths −0.78 0.13 −3.95 19.67 0.006
5 attach sounds to letters −0.63 0.12 −1.41 4.35 0.738
4 identify 10 letters −0.62 0.12 −2.48 7.59 0.370
12 aware of writing direction −0.62 0.12 −1.30 5.04 0.655
11 experiment with writing −0.62 0.12 1.23 34.05 0.000
14 writing his/her name −0.50 0.12 −1.51 9.32 0.231
3 interested in reading −0.45 0.12 −3.29 9.13 0.243
26 understands time −0.40 0.12 −0.54 7.14 0.414
24 say which is bigger than 2 −0.39 0.12 −2.63 7.65 0.364
7 group reading activities 0.06 0.11 −1.64 15.09 0.035
8 read simple words 0.24 0.10 −5.14 29.66 0.000
17 remember things easily 0.74 0.09 −2.53 8.60 0.282
23 recognise 1–10 0.77 0.09 −1.96 13.00 0.072
15 write simple words 0.84 0.09 −4.97 30.98 0.000
6 awareness of rhyming 0.98 0.09 −3.01 23.35 0.001
10 read simple sentences 1.58 0.09 −5.67 38.08 0.000
22 count to 20 1.95 0.08 −0.07 13.50 0.061
13 writing voluntarily 1.97 0.08 −1.02 17.88 0.013
16 write simple sentences 2.51 0.08 −0.09 22.20 0.002
9 read complex words 4.86 0.10 −0.04 28.56 0.000