The first group were females who had witnessed a predator attack and lost someone in that attack, and the second group were females who had witnessed an attack but had not lost someone.
O primeiro grupo eram fêmeas que assistiram ao ataque dum predador e que tinham perdido alguém nesse ataque, e o segundo grupo eram fêmeas que assistiram ao ataque dum predador mas que não tinham perdido ninguém.