Chapter 9 discusses the SO preference observed in the domain of language production, i.e., that sentences with SO orders are more frequently produced than sentences with OS orders in many languages. Although the language production mechanism is often assumed to be universal, the range of languages investigated so far is typologically quite limited. We conducted a sentence production experiment with a picture description task to clarify word order selection in Kaqchikel. In this experiment, participants verbally described the target pictures with a simple sentence. Speakers of Kaqchikel had a general preference for producing the SVO order over the VOS order. This is consistent with the prediction of the UCV, but not with that of the IGV. Therefore, the SO word order might be a universal preference in sentence production, which is in line with the results of previous studies.