SPCE 630 Midterm exam 2024 with correct answers

Threats to internal validity include: correct answersHistory, maturation, testing, procedural infidelity, testing, instrumentation, selection bias, multiple treatment interference, data instability, cycliccal variability, regression to the mean, adaptation, Hawthorne effect History: correct answersEvents that occur during the experiment but that are not related to the planned procedural changes that may influence the outcomes Maturation correct answersChanges in behavior due to the passage of time. Testing correct answersOccurs when participants need to respond to the same test repeatedly during a baseline or probe condition, which influences responding. Instrumentation correct answersThreats related to the measurement system, and are of concern because of repeated measurement by human observers who may make errors. Procedural Infidelity correct answersInconsistent implementation of the experimental condition. Attrition correct answersThe loss of participants during a study, which limits the generality of findings. Multiple Treatment Interference correct answersOccurs when a participant's behavior is influenced by more than one planned intervention during the course of a study Cyclical Variability correct answersA type of data instability that refers to a repeated and predictable pattern in the data series over time.