Summary
He made observations on different counting methods:
In Sai Cinza in 2001, finger and toe counting and seed counting by an old man and the paje;
In Aldeia Jardini / Kaburua in 2002, the village chief David Karo; in Missao Cururu in 2003, an approximate comparison test (paper version) with a bilingual subject;
In Missao Velha in 2003, an approximate comparison test (paper version) with a monolingual subject - name test (paper version) with a monolingual subject - a Whalen test explained by the village cacique, Venancio Poxo - an approximate comparison test (computer version) and a name test (paper version) with a monolingual subject.