It’s used to evaluate the limit a measurement gets to cover every single aspect of the concept under evaluation. It seeks to measure the limit to which a result obtained after a measure relates to any other valid measure used for the same concept. Respectively, each type of evidence can be appraised via statistical or expert judgment methods. You can estimate a measurement’s validity based on three kinds of evidence. Reliability and Validity: Types of Validity It seeks to determine whether a researcher will get to obtain the same set of results where different individuals get to carry out the measurement. In reliability, this is used to check the uniformity of a result through several observers or raters. The question here is whether you will attain the same results if you pay attention to separate fragments of an experiment that have all been designed to measure a similar thing. It is used to assess the reliability of the dimension in question. It seeks to establish whether a tester will obtain the same results if they repeat a given measurement. It’s a type of reliability used to assess the consistency of a given measurement across time. You can estimate different kinds of reliability using numerous statistical methods: It is essential to develop validated and comprehensive evaluation tools, embedded on the needs of Chinese families of children with ASD.Reliability and Validity: Types of Reliability Conclusions: The reliability and validity of the revised ALSOLIFE Assessment (464-items) satisfied psychometric requirements. The reliability tests indicated its strong internal consistency, test-retest reliability and inter-rater reliability. Compared to the VB-NLAPP and PEP-3, the ALSOLIFE Assessment exhibited good criterion-related validity across three levels: total scores, 6 skill domains, and 22 skill subdomains. Exploratory factor analysis (EFA) of ALSOLIFE Assessment scoring data yielded six factors, and confirmatory factor analysis (CFA) verified the best fitting construct model is a bifactorial model with one general factor and six group factors. Results: The reliability and validity of the ALSOLIFE Assessment satisfied psychometric requirements after the reduction from 511 to 464 items. The testing results of Verbal Behavior Milestones Assessment and Placement Program (VB-MAPP) and Psychoeducational Profile-3 (PEP-3) were also collected for a portion of the child participants (VB-MAPP, N=34 PEP-3, N=31) to check criterion-related validity. Their caregivers participated simultaneously as ALSOLIFE Assessment evaluators. Methods: A total of 1,050 children with ASD (1 to 10 years old) were recruited from 31 provinces of mainland China. Therefore, we conduct this study to investigate the reliability and validity of the ALSOLIFE Assessment. Although ALSOLIFE Assessment provides caregivers a home-based intervention program, it is still unclear whether its evaluation is reliable and accurate. The assessment report then further served as the basis for caregivers to deliver the tailored educational intervention to their children. lb address the practical needs of Chinese families of children with ASD, ALSOLIFE Assessment is designed as a free, online, technology-assisted, self-operated and behavioral intervention approaches supported system. Given that the critical shortage of qualified professionals in China, many caregivers of children with ASD must function as home therapists. To facilitate the application of ALSO in early intervention, ALSOLIFE skills assessment system (ALSOLIFE Assessment) was developed to enable caregivers to evaluate their children's skills guided by the ALSO conception. Background: In responding to the potential challenges in the transition from childhood to adulthood for individuals with autism spectrum disorders (ASD) in China, a novel conception of "ALSO" was proposed to bridge the transitional needs and early intervention.