> This just mentions 'an adult' without going into detail of whether this adult has children him/herself etc, or whether the adult knows the baby, or was even t

> This just mentions 'an adult' without going into detail of whether this adult has children him/herself etc, or whether the adult knows the baby, or was even the parent of the baby. Quoting from the study paper [1]: > Experiment 2. Infants sat upright in a high chair facing the female experimenter at a distance of 70 cm. It doesn’t say anything more about the experimenter. All we know is that in all experiments it’s the same adult woman. Note also that "this article is a preprint and has not been peer-reviewed" [2]. [1]: https://www.biorxiv.org/content/biorxiv/early/2017/11/24/108878.full.pdf https://www.biorxiv.org/content/biorxiv/early/2017/11/24/108... [2]: https://www.biorxiv.org/content/early/2017/11/24/108878 https://www.biorxiv.org/content/early/2017/11/24/108878