navigate to desired directory of main repo, i.e., empathy_intonation_perc/exp/
run git submodule add https://gitlab.pavlovia.org/jvcasillas/empathy_intonation_perc_sp.git and git submodule add https://gitlab.pavlovia.org/jvcasillas/empathy_intonation_perc.git
From terminal do the following:
git submodule add https://gitlab.pavlovia.org/jvcasillas/empathy_intonation_perc_sp.git
andgit submodule add https://gitlab.pavlovia.org/jvcasillas/empathy_intonation_perc.git