Changes in family life related to globalization may include reduction in the collaborativeness observed in many Indigenous American communities. The present study examined longitudinal changes and continuities in collaboration in a Guatemalan Maya community experiencing rapid globalization. Fluid collaboration was widespread 3 decades ago among triads of mothers and 1‐ to 6‐year‐olds in 24 Mayan families exploring novel objects during home visits (Dayton et al., 2022). However, in the “same” situation 30 years later, 22 mother–child triads of their relatives spent half as much time in collaboration among all three people. This aligns with globalizing changes and with the pattern of Dayton et al.'s middle‐class European American families. Nonetheless, the Mayan families maintained harmonious interactions, in line with preserving important cultural values.