S W 313 Chapter Notes - Chapter 12: Frequentist Probability, Internal Validity
Document Summary
Fourth edition: replication the duplication of a study to expose or reduce error, or the reintroduction or withdrawal of an intervention to increase the internal validity of a quasi-experiment or single- case design evaluation. B or b+ designs in evidence-based practice: Fourth edition: lacking a proper baseline, this design contains a b phase only. In analyzing the results of single-case designs that attempt to rule out threats to internal validity, you ask these questions: Visual pattern in graphs depicting series of coincidences in which the level or trend changed only after intervention is introduced or withdrawn. Statistical probability that data observed are a part of normal, change fluctuations in the target problem. Visual significance a pattern in single-case design graphs in which shifts in the level or trend of the target problem tend to coincide only with shifts in the independent variable.
