Speaker Code Key

Single Speakers

Family members

• MOT: mother

• FAT: father

• CHI: baby in our study (target child)

• BRO, BR1, BR2, etc: brother with ranking of age, BRO would be used if the baby only has one brother

• SIS, SI1, SI2, etc: sister with ranking of age, SIS would be used if the baby only has one sister

• GRM: maternal grandmother

• GRP: maternal grandfather

• GRA: paternal grandmother

• GP2: paternal grandfather

• SGP: step-grandfather

• GGM: great-grandmother

• GGP: great-grandfather

• GUN: great-uncle

• AUN: First Aunt (in order of appearance)

• AU2: Second Aunt

• UNC: First Uncle (in order of appearance)

• UN2: Second Uncle

• FCO: First Female Cousin (in order of appearance)

• FC2: Second Female Cousin

• MCO: First Male Cousin (in order of appearance)

• MC2: Second Male Cousin

Non-family members

• TOY: Toy that speaks or sings

• TVS: Any sort of electronic speaker: TV, radio, CD, iPad, etc.

• EF_: female experimenter (sometimes lab staff appear in the files when dropping off or picking up equipment), with inital (e.g. EFS)

• EM_: male experimenter, with initial (e.g. EMM)

• BS_: babysitter, first letter of first name

Other speakers that are close to the family (e.g. neighbors or family friends) are coded with the following formula:

• A or C (adult or child)

• F or M (female or male)

• First initial

  • e.g. AFH

When determining if a speaker was adult or child, coders were asked to make their best guess according to the speaker's tone of voice.