Table 7 Response change patterns and outcomes for block 8

Number of examinees

% (Based on all examinees)

% (Based on examinees with response change)

Examinees who revisited at least one item

27,521

99.0%

Examinees who changed at least one response

19,178

68.9%

100.0%

 Examinees with score gain

8742

31.4%

45.6%

 Examinees with score loss

5142

18.5%

26.8%

 Examinees with unchanged score

5294

19.0%

27.6%

Mean number of items

% (Based on all items)

% (Based on items with revisits)

Items with revisits

15.8

35.9%

100.0%

Items with revisits and no response change

14.4

32.7%

91.1%

Items with revisits and response change

1.4

3.2%

8.9%

 W-R

0.60

 R-W

0.40

 R-R

0.03

 W-W

0.39

W-R/R-W ratio

0.60/0.40 = 1.50

Overall mean score change

0.005