Reliability in psychometric instruments is essential in the development of instru-ments. The purpose of this research is to develop and validate the instruments of Friendship Activity Observational Test (FAOT) and Adjec-tive Observational Test (AOT). The draft instrument that has been compiled is then tested to see its con-sistency. Instrument testing by three trainers who observed five intellectual disability athletes in unified sports. The analysis of quantitative data using intraclass correla-tion coefficients (ICC) with rodents proposed by Fernandes, the provision of relia-bility value has consistency and high stability if above 0.80. The result of ICC pro-cessing comparison of each athlete's bleeder got the value of instrument reliability ranges FAOT of 0.916 to 0.958 and AOT of 0.920 to 0.962. The results of reliability test on FAOT and AOT instruments for intellectual disability children in unified sports were obtained reliable results, so that in-strument has consistency and high stability to be used as a psychosocial tool for children with disability in unified sports
