The document is an abstract for a research paper on derivational processes in the Matbat language. It discusses how word construction systems are important for language learners to understand in order to avoid misplacing morphemes. The researcher investigated derivational processes in Matbat by having native speakers translate word lists containing derivational words from Indonesian to Matbat. The analysis found that Matbat uses derivational processes of adjective to verb, adjective to noun, and verb to noun.