Validity and reliability are psychometric elements indicating an instrument's effectiveness at being able to measure what it purports to measure and its stability across different settings and populations. Brunei Darussalam's Teacher Referral Form (TRF), an adapted checklist, was examined to determine whether the items reflect Brunei's definition of gifted and talented, if the hypothesized factor structure of the original checklist is empirically valid, whether the TRF exhibited sufficient internal consistency across its items, and if the pattern of factor convergence could explain the observed outcomes. An analysis of the TRF for its content-related validity, a factor analysis of teachers' ratings on students using the TRF, and an estimate of the TRF's reliability were used to answer those questions. The analyses indicated that the TRF and accompanying data did not provide evidence that the items in the checklist reflect Brunei's definition and the hypothesized factor structure was not verified by the existing data, suggesting that the TRF has weak psychometric properties. ..............................................................................................................125 ........................................................................................................126 Human capital is considered an important asset in today's economy driven society in both developed and developing nations, and it "refers to the knowledge, information, ideas, skills, and health of an individual" (Becker, 2002). As a specialized branch in education, gifted education is believed to impact human capital through purposefully planned programs focused on developing talent (Becker, 2002;Clinkenbeard, 2007;Psacharopoulos & Patrinos, 2004). By developing talent and realizing potential through appropriately challenging educational programs, an individual can both enhance and acquire new skills, competencies, knowledge, and information, all of which contribute to the development of individual human capital. Through individuals, gifted education could have an impact on the national economic level.Gifted education can also be considered in terms of its impact on the individual (Reis, 2008). Addressing the learning and development of the highly capable student is just as important as addressing the learning and development of any other student (Reis, 2008). Researchers (Moon, Callahan, Brighton, & Tomlinson, 2002) have shown that gifted students are often bored or unchallenged because their prior learning is repeated in current classroom lessons or because they learn at a more rapid pace and must wait while other students engage in activities which are not necessary for the learning of the gifted student at that time. As a result, gifted students are often unchallenged or not even learning during significant portions of a school day (Moon et al., 2002). When gifted 2 students are not challenged, they may underachieve, their potential may be unrealized, and they may drop out of school (Reis & McCoach, 2...