Final answer:
The references provided do not contain information on Mayer and Massa's experiment with non-educated adults, hence an accurate answer cannot be given based on the available data.
Step-by-step explanation:
The question pertains to the findings of Mayer and Massa in their experiment involving non-educated adults. Unfortunately, the provided reference information does not include any specific experiments by Mayer and Massa, hence there are no detailed descriptions or results pertaining to their work with non-educated adults within the context of the provided information. Therefore, it is not possible to provide an accurate description of their findings without the correct and relevant scientific study or publication to reference.