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Results
#1. A Board Certified Behavior Analyst (BCBA) has successfully implemented a novel social skills training program in a highly controlled clinic setting, demonstrating its effectiveness with a small group of clients. The BCBA now wishes to determine if these positive findings can be applied to a broader population of individuals with diverse backgrounds and in various community-based environments, such as schools and day programs. Which of the following research strategies would most directly contribute to establishing the external validity of the social skills training program?
External validity refers to the extent to which the findings of a study can be generalized to other settings populations and conditions To demonstrate that an interventions effects are robust and apply beyond the initial controlled context researchers utilize replication strategies Systematic replication involves intentionally varying one or more aspects of an earlier study eg participants settings response measures or implementers while attempting to reproduce the original findings By replicating the social skills program in different community settings with diverse clients the BCBA would be directly testing and enhancing its external validity showing that the program works under different realworld conditions A withdrawal design ABAB primarily focuses on establishing internal validity which is the extent to which a functional relation can be demonstrated between the independent variable intervention and the dependent variable behavior within a specific controlled context It does not inherently address generalizability to different conditions or populations Technological precision ensures that the intervention procedure is described with sufficient detail and clarity so that it can be consistently implemented and replicated by others While important for fidelity and the ability to replicate technological precision alone does not guarantee that the intervention will produce the same results under different conditions or with different populations which is the core of external validity Maximizing internal validity ensures that changes in the dependent variable are indeed due to the independent variable and not extraneous factors While essential for any good study it is distinct from external validity which concerns generalizability across different conditions
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