CHILDES Japanese Okayama Corpus

Creator: Yoshiko Okayama		Contributor: Yoshiko Sakazaki
	Contributor: Susanne Miyata Department of Medical Sciences Aichi Shukotoku University smiyata@asu.aasa.ac.jp website		Contributor: Yasuhiro Shirai Department of Linguistics Case Western University yasuhiro.shirai@case.edu website

Participants:	130
Type of Study:	naturalistic
Location:	Japan
Media type:	no longer available
DOI:	doi:10.21415/T5189J

Citation information

Publications using these data should cite:

Okayama, Yoshiko (1970). Haha to ko no taiwa no shuurooku [A collection of mother-child conversations]. Osaka: Yasuda Seimei Shakaijigyoodan.

Okayama, Yoshiko (1973). Haha to ko no taiwa no shuurooku [A collection of mother-child conversations]. Osaka: Yasuda Seimei Shakaijigyoodan.

Shirai, Y., Miyata, S., Naka, N., & Sakazaki, Y. (2001). The acquisition of causative morphology in Japanese: A prototype account. In M. Nakayama (Ed.), Issues in East Asian language acquisition (pp. 183-203). Tokyo: Kurosio.

In accordance with TalkBank rules, any use of data from this corpus must be accompanied by at least one of the above references.

Project Description

The Okayama Corpus is a cross-sectional corpus containing mother-child conversations from 130 children between 2;2 and 4;11 collected between 1969 and 1971 in the Osaka area. The corpus contains 31 files of 2 year-olds (14 boys, 17 girls), 67 files of 3 year-olds (26 boys, 41 girls), and 32 files of 4 year-olds (16 boys, 16 girls). The data were collected by students from Mukogawa Women's　University (Nishinomiya, Osaka), and edited and published in two parts by Yoshiko Okayama (1970, 1973).

The students were instructed to collect utterances between a child and his/her mother for one whole day from the moment the child would wake up until bedtime. In three cases (files 2, 53, and 78), the grandmother’s utterances were included. The participating children were recruited by the students, who were instructed to select a household they were well acquainted with: typically a close relative or neighbor. All observations took place in summer (April - September). The students took notes during the whole day including short explanations concerning the situation. Utterances directed to other persons were excluded. The handwritten notes were amended by audio recordings (the students carried small tape recorders hidden in a furoshiki-bundle with them). The utterances were transcribed by the students as closely as possible to the actual pronunciation, and edited by Yoshiko Okayama.

For the publication in CHILDES, the data has been reformatted in CHAT format, and main lines in Latin script (Hepburn-style, following Wakachi2002) have been added. The last names as well as the addresses of the participants have been initialized. The files have been re-numbered consecutively, sorted by age and sex (compare Table 1).

Table 1. Data specification

File Name Original
Number Age Sex Number of
Utterances
CHI MOT (GMA)
001-2.2-M 2--01 2;2. male 153 211
002-2.3-M 2--02 2;3. male 81 55 (23)
003-2.3-M 2--03 2;3. male 128 216
004-2.3-F 2--15 2;3. male 271 355
005-2.5-M 2--04 2;5. male 127 122
006-2.5-F 2--18 2;5. female 156 204
007-2.5-M 2--16 2;5. female 593 691
008-2.5-F 2--19 2;5. female 454 609
009-2.5-F 2--05 2;5. female 206 392
010-2.6-M 2--20 2;6. male 130 190
011-2.6-F 2--21 2;6. female 108 148
012-2.6-F 2--22 2;6. female 83 74
013-2.6-F 2--06 2;5. female 221 507
014-2.7-M 2--24 2;7. male 162 210
015-2.7-F 2--23 2;7. female 307 398
016-2.7-F 2--25 2;7. female 67 88
017-2.7-F 2--26 2;7. female 339 505
018-2.7-F 2--27 2;7. female 171 255
019-2.7-F 2--07 2;7. female 30 53
020-2.8-M 2--28 2;8. male 85 118
021-2.9-F 2--08 2;9. female 84 81
022-2.10-M 2--09 2;10. male 141 201
023-2.10-M 2--10 2;10. male 128 331
024-2.10-M 2--29 2;10. male 178 201
025-2.10-F 2--11 2;10. female 161 208
026-2.11-M 2--12 2;11. male 80 141
027-2.11-M 2--13 2;11. male 72 86
028-2.11-M 2--14 2;11. male 74 98
029-2.11-M 2--30 2;11. male 116 172
030-2.11-F 2--31 2;11. female 14 59
031-2.11-F 2--17 2;11. female 276 431
032-3.0-M 3--30 3;0. female 163 241
033-3.0-F 3--28 3;0. female 259 232
034-3.0-F 3--29 3;0. male 52 43
035-3.0-F 3--27 3;0. female 264 638
036-3.1-M 3--02 3;1. male 168 261
037-3.1-M 3--01 3;1. male 238 504
038-3.1-F 3--31 3;1. female 118 231
039-3.2-M 3--03 3;2. male 292 265
040-3.2-F 3--33 3;2. female 96 76
041-3.2-F 3--35 3;2. female 166 179
042-3.2-F 3--37 3;2. female 103 199
043-3.2-F 3--38 3;2. female 71 34
044-3.2-F 3--32 3;2. female 181 212
045-3.3-M 3--05 3;3. male 108 143
046-3.3-M 3--04 3;3. male 89 179
047-3.3-F 3--39 3;3. female 425 571
048-3.4-M 3--06 3;4. male 250 534
049-3.4-F 3--41 3;4. female 238 172
050-3.5-F 3--42 3;5. female 563 732
051-3.5-F 3--43 3;5. female 41 47
052-3.4-F 3--40 3;4. female 65 89
053-3.6-M 3--08 3;6. male 103 107 (178)
054-3.6-M 3--09 3;6. male 283 442
055-3.6-M 3--10 3;6. male 115 198
056-3.6-M 3--07 3;6. male 224 284
057-3.6-F 3--36 3;6. female 382 403
058-3.6-F 3--44 3;6. female 118 183
059-3.6-F 3--45 3;6. female 92 117
060-3.6-F 3--46 3;6. female 302 392
061-3.6-F 3--47 3;6. female 88 129
062-3.6-F 3--54 3;6. female 75 143
063-3.6-F 3--34 3;6. female 50 55
064-3.7-M 3--12 3;7. male 95 130
065-3.7-M 3--13 3;7. male 148 212
066-3.7-M 3--14 3;7. male 318 250
067-3.7-M 3--11 3;7. male 447 723
068-3.7-F 3--49 3;7. female 55 75
069-3.7-F 3--50 3;7. female 96 178
070-3.7-F 3--51 3;7. female 79 99
071-3.7-F 3--52 3;7. female 187 371
072-3.7-F 3--53 3;7. female 162 225
073-3.7-F 3--48 3;7. female 312 294
074-3.8-M 3--16 3;8. male 80 189
075-3.8-M 3--15 3;8. male 336 372
076-3.8-F 3--56 3;8. female 110 158
077-3.8-F 3--57 3;8. female 322 607
078-3.8-F 3--55 3;8. female 290 63 (266)
079-3.9-M 3--17 3;9. male 523 795
080-3.9-M 3--18 3;9. male 294 358
081-3.9-F 3--58 3;9. female 171 280
082-3.10-M 3--20 3;10. male 456 742
083-3.10-M 3--19 3;10. male 268 552
084-3.10-M 3--22 3;10. male 100 104
085-3.10-M 3--21 3;10. male 473 814
086-3.10-F 3--61 3;10. female 204 322
087-3.10-F 3--62 3;10. female 407 514
088-3.10-F 3--63 3;10. female 290 427
089-3.10-F 3--64 3;10. female 142 140
090-3.10-F 3-65 3;10. female 62 83
091-3.10-F 3--59 3;10. female 212 467
092-3.10-F 3--60 3;10. female 46 60
093-3.11-M 3--25 3;11. male 108 228
094-3.11-M 3--23 3;11. male 276 255
095-3.11-M 3--24 3;11. male 253 231
096-3.11-M 3--26 3;11. male 149 178
097-3.11-F 3--67 3;11. female 251 415
098-3.11-F 3--66 3;11. female 190 158
099-4.1-M 4--01 4;1. male 86 90
100-4.1-M 4--02 4;1. male 126 116
101-4.1-M 4--03 4;1. male 335 592
102-4.1-M 4--04 4;1. male 793 776
103-4.1-M 4--05 4;1. male 106 183
104-4.2-M 4--06 4;2. male 183 240
105-4.2-F 4--16 4;2. female 171 247
106-4.2-F 4--17 4;2. female 92 141
107-4.2-F 4--18 4;2. female 61 73
108-4.3-M 4--07 4;3. male 197 307
109-4.3-M 4--08 4;3. male 144 285
110-4.3-M 4--09 4;3. male 779 847
111-4.3-F 4--19 4;3. female 322 347
112-4.4-M 4--11 4;4. male 206 280
113-4.4-M 4--10 4;4. male 192 220
114-4.4-M 4--20 4;4. male 159 239
115-4.4-F 4--21 4;4. female 437 463
116-4.5-F 4--22 4;5. female 110 155
117-4.5-F 4--23 4;5. female 102 134
118-4.6-F 4--24 4;6. female 330 510
119-4.6-F 4--25 4;6. female 57 95
120-4.7.M 4--12 4;7. male 275 653
121-4.7-F 4--26 4;7. female 466 870
122-4.7-F 4--27 4;7. female 350 402
123-4.7-F 4--28 4;7. female 199 254
124-4.9-M 4--13 4;9. male 140 183
125-4.9-F 4--30 4;9. female 196 238
126-4.9-F 4--29 4;9. male 37 38
127-4.10-M 4--14 4;10. male 245 385
128-4.10-F 4--32 4;10. female 133 133
129-4.10-F 4--31 4;10. female 244 427
130-4.11-M 4--15 4;11. male 252 328
Total: 26,415 37,269