The article presents reliability statistics data in relation to the development of emotional instability and behavioral difficulties scale for youths in a Malaysia context. The data were obtained from youths participants in Kuala Lumpur and Klang Valley, Selangor, Malaysia. The data has four different subscales in describing emotional instability and behavioral difficulties. The data were analyzed using Cronbach's alpha, McDonald's ω, and Gutmann's λ6 to examine internal consistency test. The data showed that this new scale can be used to measure three subscales of emotional instability and one subscale of behavioral difficulties among youths in a Malaysia context.