The present text offers information related to the files "humanmacaque.csv", and "longhumanmacaque.csv", which contain the data used for the manuscript "The functional architecture of mother-infant communication in Rhesus Macaques and Humans: same but different", by V. Sclafani, L. De Pascalis, L. Bozicevic, A. Sepe, P. F. Ferrari, and L. Murray

Variable description for "humanmacaque.csv"

id = Subject ID code
group = Species (Humans Vs. Rhesus Macaques)
seconds = Duration in seconds of the coded episode of mother-infant interaction
days = Age of the infant in days
age_allweeks = Age of the infant in days standardised within each species (considering all weeks during which data were collected)
age_lastweeks = Age of the infant in days standardised within each species (considering only weeks 5, 7, 9 of infant age)
ca1 = Frequency of non-social mouth movements
ca2 = Frequency of proto-communicative mouth gestures
cb1 = Frequency of smiles
cc1 = Frequency of positive vocalisations
ci3 = Frequency of lip-smacking
cd1 = Frequency of gaze to the mother (in number of seconds)
csb = Frequency of social behaviours
callall = Frequency of infant events (any type of non-gaze behaviour)
cneg = Frequency of expressions of negative affect
m_e = Frequency of maternal mirroring
a_e = Frequency of maternal affirmative marking
nresp = Frequency of maternal negative responses
r_eall = Frequency of maternal responses (any type of response)
m_sb = Frequency of maternal mirroring to infant social behaviours
a_sb = Frequency of maternal affirmative marking to infant social behaviours
r_sb = Frequency of maternal responses (any type of response) to infant social behaviours

Variable description for "longhumanmacaque.csv"

id = Subject ID code
group = Species (Humans Vs. Rhesus Macaques)
age_lastweeks = Age of the infant in days standardised within each species (considering only weeks 5, 7, 9 of infant age)
specmir = Kind of Mirroring (Direct Vs. Modified Vs. Enriched)
chbehav = Kind of infant behaviour (Proto-Communicative Vs. Vocalisations Vs. Smiles Vs. Lip-Smacking)
psbin = Binary variable, identifying whether the infant behaviour was a proto-communicative mouth gesture or not
vocbin = Binary variable, identifying whether the infant behaviour was (1) a positive vocalisation or not (0)
smilebin = Binary variable, identifying whether the infant behaviour was (1) a smile or not (0)
lsbin = Binary variable, identifying whether the infant behaviour was (1) a lip-smacking or not (0)
baserate = Rate per second of the specific infant behaviour contained in the specific row of the file (either Proto-Communicative, Vocalisations, Smiles, or Lip-Smacking), for the specific infant, in the specific mother-infant interaction.
affbin = Binary variable, identifying whether the infant behaviour was (1) affiliative or not (0)
combin = Binary variable, identifying whether the infant behaviour was (1) communicative or not (0)
baserateaffcom = Rate per second of the specific infant behaviour contained in the specific row of the file (either communicative or affiliative), for the specific infant, in the specific mother-infant interaction.

All scripts for analyses reported in the main paper are included in the "Analyses.R" file, which should be run using the statistical software package R (https://www.r-project.org/)