The development of independent sitting is associated with language development, but the learning experiences underlying this relationship are not well understood. Additionally, it is unknown how these
NS means no significant difference.“No Cleavage” means one-cell zygote without cleavage 48 h post-fertilization; “Cleavage” means embryos with 2–4 blastomeres 48 h post-fertilization; “Slow Cleavage”