Everybody heard the same recording, but what we found was that people who thought they were listening to a run-of-the-mill Spanish speaker made clear differences between the word pairs, and people who thought they were listening to a Quechua speaker really didn't seem to make clear differences.
Todos escucharon la misma grabación, pero descubrimos que quienes creyeron estar escuchando a un típico hispanohablante notaron claras diferencias en las palabras; y quienes creyeron que estaban escuchando a un quechua no pudieron detectar claramente las diferencias.