Datavyu ID Code for 1-Hour Natural Play

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<site> <participant> <testdate> <birthdate> <agegroup> <sex> <study> <babylanguage1> <babylanguage2> <momlanguage2> <momlanguage2>

Operational Definitions

<onset/offset>

Set every ID cell onset to 00:00:00:000 (hours : minutes : seconds : milliseconds).

Set ID cell offset to the last frame in the 1-hour free play session.

<site>

Site refers to the data collection site: New York University, Rutgers Newark, CUNY Staten Island, Penn State, etc.

Get the site from the metadata information collected on the app.

Format is three letters all caps: NYU, RTG, CSI, PSU.

<participant>

Participant number refers to the infant's participant number in the order that the data were collected.

Participant numbers run consecutively from 001 within each site.

Get the participant number from the metadata information collected on the app.

Format for id number is three digits 001, 012, 021.

<testdate>

Test date is the day of the home visit.

Get the test date from the metadata information collected on the app.

Format for test date is YYYY-MM-DD.

<birthdate>

Birth date is the day the baby was born.

Get the birth date from the metadata information collected on the app.

Format for birth date is YYYY-MM-DD.

<agegroup>

Entered as 12, 18, or 24.

Get the age group from the metadata information collected on the app.

<sex>

Refers to infant's biological sex.

Code 'm' = male/boy; 'f' = female/girl.

Get the sex from the metadata information collected on the app.

<study>

Study name.

Code as 'PLAY'.

<babylanguage1>

Refers to infant's predominant language spoken during the session.

Code with lowercase, full name of the language: 'english' or 'spanish'.

<babylanguage2>

Refers to infant's other language spoken during the session, if another language was spoken.

Code with lowercase, full name of the language: 'english' or 'spanish'. If no other language was spoken as missing '.'

<momlanguage1>

Refers to mother's predominant language spoken during the session.

Code with lowercase, full name of the language: 'english' or 'spanish'.

<momlanguage2>

Refers to mother's other language spoken during the session, if another language was spoken.

Code with lowercase, full name of the language: 'english' or 'spanish'. If no other language was spoken as missing '.'