6 and 7 months

Each subject's 06 month and 07 month files were listened to and coded in their entirety, except for sections that were determined to be silent (using a silence-finding algorithm).

Sections of the file are also silenced due to Personal Information. These sections were still coded (i.e. there could be a segment marked personal information, but if the parent also said a codeable word during that segment, it would be included in the final word list for that file).

Total listened time (see recordings.csv) for 06 and 07 month files is the total length of the recording, minus any time delineated as a Silence.