<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Info-CHILDES,<div> I am happy to announce the addition to CHILDES of two new corpora from children learning American English. The first is from Richard Weist at Fredonia. Although the study focused on the use of time marking and autobiographical memory, the data are of general interest for their longitudinal coverage. Audio is not yet available, but we hope to add it eventually. A readme for this "Fredonia" corpus is given below. The second corpus is from Melanie Soderstrom of the University of Manitoba. This corpus focuses on two mothers of preverbal children and the transcripts are fully linked to audio. The readme for the Soderstrom corpus also follows below.</div><div>Many thanks to both Melanie and Dick for these lovely additions to CHILDES.</div><div><br></div><div>--Brian MacWhinney</div><div><br></div><div><!--StartFragment--><p class="MsoNormal"><b>Fredonia Corpus</b>:</p><p class="MsoNormal" style="mso-pagination:none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><span style="mso-bidi-font-size:
12.0pt;font-family:"Times New Roman"">The research was supported by grant #
BCS-0091702 from the National Science Foundation, a SUNY Fredonia Scholarly
Incentive Award, and funds provided by the Department of Psychology at SUNY
Fredonia. The goal of this longitudinal project was to obtain caregiver-child
interaction data from children aged 2 to 5, in order to capture the children</span><span style="mso-bidi-font-size:12.0pt;font-family:"Party LET";mso-bidi-font-family:
"Party LET"">’</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">s
language in an early phase of the acquisition of their event time (ET) system
and continue observations through the emergence of their reference time (RT) system.<span style="mso-spacerun: yes"> </span>Whenever possible, the children were
audio tape recorded in either a laboratory setting or in their homes twice a
month for approximately 30 minutes.<span style="mso-spacerun: yes">
</span>The audiotapes were transcribed into the CHAT format, and then the
transcriptions were completely checked for accuracy.<span style="mso-spacerun:
yes"> </span>The children are as follows together with their starting
ages, ending ages, and number (</span><span style="mso-bidi-font-size:12.0pt;
mso-bidi-font-family:Times">n</span><span style="mso-bidi-font-size:12.0pt;
font-family:"Times New Roman"">) of transcripts: Ben (2;4 – 3;3, n=11), Emily
(2;6 – 4;5 </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:
Times">n</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">
= 23), Emma (2;7 – 4;7 </span><span style="mso-bidi-font-size:12.0pt;
mso-bidi-font-family:Times">n</span><span style="mso-bidi-font-size:12.0pt;
font-family:"Times New Roman""> = 28), Jillian (2;1 – 2;10 </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:Times">n</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman""> = 22), Matty
(2;3 – 5;0 </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:
Times">n</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">
= 56), and Roman (2;2 – 4;7 </span><span style="mso-bidi-font-size:12.0pt;
mso-bidi-font-family:Times">n</span><span style="mso-bidi-font-size:12.0pt;
font-family:"Times New Roman""> = 42).<span style="mso-spacerun: yes"> </span></span></p><p class="MsoNormal" style="mso-pagination:none;tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><span style="mso-bidi-font-size:
12.0pt;font-family:"Times New Roman"">Three forms of past reference were
analyzed: 1) regular and irregular simple past</span><span style="mso-bidi-font-size:
12.0pt;font-family:Helvetica;mso-bidi-font-family:Helvetica"> </span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">tense, 2) past
progressive, and 3) subordinate clause constructions with </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:Times">when</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman""> and past time
reference (i.e., past </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:
Times">when</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">-sentences).<span style="mso-spacerun: yes"> </span>Simple past was acquired relatively
early at 2;4 (cf. Brown, 1973), past </span><span style="mso-bidi-font-size:
12.0pt;mso-bidi-font-family:Times">when</span><span style="mso-bidi-font-size:
12.0pt;font-family:"Times New Roman"">-sentences relatively late at 3;6 (cf.
Limber, 1973), and past-progressive in the interim at 2;10.<span style="mso-spacerun: yes"> </span>The discourse segments surrounding the
sentences that contained these forms were analyzed for the following three
elements: 1) reference time context established, 2) a supporting event
expressed in the segment, and 3) reference made to a self-relevant real-life
event.<span style="mso-spacerun: yes"> </span>The likelihood that a
discourse segment would include these three elements increased as past
reference advanced from simple past to past progressive and then to past </span><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:Times">when</span><span style="mso-bidi-font-size:12.0pt;font-family:"Times New Roman"">-sentences.<span style="mso-spacerun: yes"> </span>As the morphosyntax of past reference
became more complex, a higher proportion of past time references provided
evidence for autobiographical memory.</span></p><p class="MsoNormal" align="left" style="text-align:left;mso-pagination:none;
tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><span style="mso-bidi-font-size:
12.0pt;font-family:"Times New Roman"">Publications using these data should cite
this article:</span></p><p class="MsoNormal" align="left" style="text-align:left;mso-pagination:none;
tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><span style="mso-bidi-font-size:
12.0pt;font-family:"Times New Roman"">Weist, R., & Zevenbergen, A. (2008)
Autobiographical Memory and Past Time Reference, </span><u><span style="mso-bidi-font-size:12.0pt;mso-bidi-font-family:Times">Language Learning
and Development</span></u><span style="mso-bidi-font-size:12.0pt;font-family:
"Times New Roman"">, 4.</span><span style="mso-bidi-font-size:12.0pt;
font-family:Helvetica;mso-bidi-font-family:Helvetica"><o:p></o:p></span></p><p class="MsoNormal" align="left" style="text-align:left;mso-pagination:none;
tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><font class="Apple-style-span" face="'Times New Roman'"><b>Soderstrom Corpus</b></font></p><p class="MsoNormal" align="left" style="text-align:left;mso-pagination:none;
tab-stops:28.0pt 56.0pt 84.0pt 112.0pt 140.0pt 168.0pt 196.0pt 224.0pt 3.5in 280.0pt 308.0pt 336.0pt;
mso-layout-grid-align:none;text-autospace:none"><font class="Apple-style-span" face="'Times New Roman'">
<!--StartFragment--><p class="MsoNormal">This corpus was collected to examine the properties of
speech input available to preverbal infants relevant to the acquisition of the
grammar, and to evaluate the prosodic bootstrapping hypothesis for preverbal
infants. The collection of this corpus was funded by a Kirschstein NRSA
postdoctoral research fellowship 5F32HD042927 to MS and an NIH grant
1RO1HD32005 to JLM.</p><p class="MsoNormal" align="left" style="text-align:left">The participants were two
mothers, each with young boy babies. The mothers and their babies were visited
at (semi)-regular intervals from 6-10 months (14 hours and 8.5 hours), along
with two one-hour recordings each at 12 months. Transcripts or analyses of two
follow-up recordings made of each mother at 18 months (with video), may be made
available to individuals upon request to the above address. Additional
information regarding the two families is available in the JCL citation below.</p><p class="MsoNormal">The mothers very kindly agreed to donate their recordings to
CHILDES and to have the first names of the immediate family members available
in CHILDES in order to facilitate analyses. Please treat this information with
respect and help to preserve their anonymity otherwise. Last and middle names
and some other possibly identifying information have been removed from the
transcript and recordings.</p><p class="MsoNormal">Charles was born 24-FEB-2003 and his brother was born
29-AUG-1998.<span style="mso-spacerun: yes"> </span>Joseph was born
19-DEC-2002.<span style="mso-spacerun: yes"> </span>His sister was born
17-MAR-2000 and his brother was born 07-APR-1998.</p><p class="MsoNormal">The audio recordings were collected by the mothers in the
home.<span style="mso-spacerun: yes"> </span>Recordings obtained within a
short period of time are combined into the same transcript file.<span style="mso-spacerun: yes"> </span>Transcription uses basic CHAT format
with no phonetic detail.<span style="mso-spacerun: yes"> </span>Please
note that while care was taken in transcribing speech errors, noisy
environments, and other difficult sections, the transcripts should not be
considered error-free. Users should examine the transcripts and/or recordings
carefully given their particular research needs. Additional information
regarding the transcription process is available in the above JCL reference or
by contacting Melanie Soderstrom at the above address. Please advise Melanie
Soderstrom if you detect any obvious discrepancies between the recordings and
the written form.</p><p class="MsoNormal">Publications using these data should cite:</p><p class="MsoNormal" style="margin-left:22.5pt;text-indent:-22.5pt">Soderstrom,
M., Blossom, M., Foygel, R., & Morgan, J.L. (in press). Acoustical cues and
grammatical units in speech to two preverbal infants. <i style="mso-bidi-font-style:
normal">Journal of Child Language.</i></p><p class="MsoNormal"><o:p> </o:p></p>
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