SPCE 630 question n answers graded A+ 2024/2025

SPCE 630 Threats to internal validity include: - correct answer History, maturation, testing, procedural infidelity Events that occur during the experiment but that are not related to planned procedural changes that may influence the outcomes. - correct answer History Changes in behavior due to the passage of time. - correct answer Maturation Occurs when participants need to respond to the same test repeatedly during a baseline or probe condition, which influences responding. - correct answer Testing Threats related to the measurement system, and are of concern because of repeated measurement by human observers who may make errors. - correct answer Instrumentation Inconsistent implementation of the experimental condition. - correct answer Procedural Infidelity The loss of participants during a study, which limits the generality of findings. - correct answer Attrition Occurs when a participant's behavior is influenced by more than one planned intervention during the course of a study. - correct answer Multiple Treatment Intreference A type of data instability that refers to a repeated and predictable pattern in the data series over time. - correct answer Cyclical Variability Carryover effects: - correct answer NOT: Is best described as the effect of a procedure used in one condition on responding in an adjacent condition. The hypothesis that assumes that sample observations are influenced by some non-random cause is: - correct answer The alternative hypothesis