Table 4 Lexical Information of the Four Quarters of Words Divided Based on the Number of Observations.

From: The database of eye-movement measures on words in Chinese reading

Measures

Quarters

Log-transformed word frequency

Number of observations

Sample size in different word length (unit: character)

Mean (SD)

Range

Mean (SD)

Range

1

2

3

4

FFD

Quarter 1

0.632 (0.541)

[0.013, 3.425]

8 (3)

[1, 13]

450

1250

172

136

Quarter 2

0.689 (0.554)

[0.013, 3.197]

20 (4)

[13, 26]

263

1443

126

176

Quarter 3

0.864 (0.621)

[0.013, 4.598]

37 (9)

[26, 55]

242

1567

121

78

Quarter 4

1.598 (0.809)

[0.013, 4.700]

219 (892)

[55, 35299]

396

1542

49

22

GD

Quarter 1

0.632 (0.541)

[0.013, 3.425]

8 (3)

[1, 13]

450

1250

172

136

Quarter 2

0.689 (0.554)

[0.013, 3.197]

20 (4)

[13, 26]

263

1443

126

176

Quarter 3

0.864 (0.621)

[0.013, 4.598]

37 (9)

[26, 55]

242

1567

121

78

Quarter 4

1.598 (0.809)

[0.013, 4.700]

219 (892)

[55, 35299]

396

1542

49

22

FPF

Quarter 1

0.572 (0.517)

[0.013, 3.425]

10 (3)

[2, 15]

362

1268

230

148

Quarter 2

0.666 (0.524)

[0.013, 3.197]

23 (5)

[15, 30]

190

1544

87

187

Quarter 3

0.905 (0.598)

[0.013, 3.527]

46 (11)

[30, 70]

301

1534

113

60

Quarter 4

1.639 (0.797)

[0.013, 4.700]

355 (2073)

[70, 83658]

498

1456

38

17

  1. Note. Quarters of each measure were divided based on the number of observations of words in ascending order, with each quarter containing 2008-2009 words. Abbreviations: FFD, first fixation duration; GD, gaze duration; FPF, first-pass reading fixation proportion; SD, standard deviation.