SPCE 630 Midterm questions and answers graded A+ 2024/2025

SPCE 630 MidtermThreats to internal validity include: - correct answer History, maturation, testing, procedural infidelity, testing, instrumentation, selection bias, multiple treatment interference, data instability, cycliccal variability, regression to the mean, adaptation, Hawthorne effect History: - correct answer Events that occur during the experiment but that are not related to the planned procedural changes that may influence the outcomes Maturation - correct answer Changes in behavior due to the passage of time. Testing - correct answer Occurs when participants need to respond to the same test repeatedly during a baseline or probe condition, which influences responding. Instrumentation - correct answer Threats related to the measurement system, and are of concern because of repeated measurement by human observers who may make errors. Procedural Infidelity - correct answer Inconsistent implementation of the experimental condition. Attrition - correct answer The loss of participants during a study, which limits the generality of findings. Multiple Treatment Interference - correct answer Occurs when a participant's behavior is influenced by more than one planned intervention during the course of a study Cyclical Variability - correct answer A type of data instability that refers to a repeated and predictable pattern in the data series over time. Sequential confounding: - correct answer -May influence the participants' responding based on the order in which the experimental conditions are introduced to participants. -Can be controlled by counterbalancing.