“…CD, child development; CL, child language; DP, developmental psychology; DS, developmental science; I&CD, infant and child development; IB & D, infant behaviour and development; LA, language acquisition; LL&D, language learning and development.detection of language features/speaker properties in diverse contexts (e.g Fecher & Johnson, 2019). and so using speakers of different genders allows for testing of children's ability to generalise across input sources(Siying & Renji, 2019;ter Haar & Levelt, 2018). A small number of studies alternated speaker genders as a way of differentiating between the training and test stages of the experiments (e.g Bulgarelli & Bergelson, 2021;Verdine et al, 2017)…”