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The one-group posttest-only design (a.k.a. one-shot case study) is a type of quasi-experiment in which the outcome of interest is measured only once after exposing a non-random group of participants to a certain intervention.
10 Νοε 2021 · This chapter addresses the peculiarities, characteristics, and major fallacies of single case research designs. A single case study research design is a collective term for an in-depth analysis of a small non-random sample. The focus on this design is on in-depth.
When rigorously designed, single-case studies can be particularly useful experimental designs in a variety of situations, even when researcher resources are limited, studied conditions have low incidences, or when examining effects of novel or expensive interventions.
26 Νοε 2021 · Single-case studies designed to examine component interactions or setting specificity may benefit from use of complex single-case designs that combine multiple baseline, alternating treatment and/or reversal elements (Kazdin, 2021). In other cases, analysis approaches may be helpful to both document effects and guide future studies.
The one-shot case study design is shown in figure 4.1e. It is also called the ex post facto design because a single group of people is measured on some dependent variable after an intervention has taken place.
validity is the one-group posttest-only design, which is also called the one-shot case study (Campbell & Stanley, 1966). Using the one-group posttest-only design, a researcher measures a dependent variable for one group of participants following a treatment. For example, as illustrated in Figure 13.2, after a teacher provides
9 Δεκ 2020 · When choosing a single case over a multiple-case design, five rationales might apply; the single case may be (i) critical, (ii) unusual, (iii) common, (iv) revelatory, or (v) longitudinal . Multiple cases are typically used for replication of an intervention and to present different context.
