<![CDATA[Uncontrolled consumptive behavior can lead to wasteful lifestyles and poor financial decision-making abilities. The purpose of this study is to design a game media based on the teachings of neng ning nung nang, test the effectiveness of the game book to increase inhibitory control as an effort to reduce consumptive behavior, and analyze the differences in inhibitory control levels before and after using the developed game book. This study uses a quantitative method with the RnD approach. The RnD approach refers to the concept of Richey and Klein which consists of 3 stages, namely the development stage, internal validity testing, and external validity testing. Testing the effectiveness of the game media uses a quasi-experimental method. This study uses a game-based intervention conducted at SMK Negeri South Sumatra with 25 subjects selected using a purposive sampling technique. Research data collection uses observations and tests designed to determine differences in inhibitory control and in research subjects. The collected data will be analyzed using a paired sample t-test. The results of the study indicate that the designed game book is feasible to be implemented, the game book media is proven to be effective in reducing inhibitory control, and there are significant differences before and after the intervention using the game book.]]>
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