SPCE 630: Comprehensive Study Guide (Check point 3)100 % Verified Questions % Answers: Latest Updated Solution

Which of the following scenarios best exemplifies a threat to external validity in a research study?a. Participants dropping out of a study at different rates across experimental groups. b. Participants altering their behavior because they are aware they are being observed. c. The use of a non-representative sample that limits the generalizability of the findings. d. Inconsistent application of the experimental procedure across participants. e. Measurement instruments yielding different results upon repeated administrations. Correct Answer: C Rationale for correct answer: External validity pertains to the extent to which research findings can be generalized beyond the specific conditions or participants of the study. A nonrepresentative sample poses a threat to external validity because it restricts the applicability of the results to broader populations. 2. Which of the following is a defining feature of single-case experimental designs? a. Participants are randomly assigned to different groups. b. Data is collected at a single point in time. c. Each individual serves as their own control. d. Large sample sizes are required for statistical analysis. e. Outcomes are compared between different groups. Correct Answer: C Rationale for correct answer: In single-case experimental designs, each participant acts as their own control, allowing for the observation of changes in behavior or outcomes within the same individual over time.3. Which type of graph is most commonly used in ABA to display changes in behavior over time? a. Pie chart b. Histogram c. Line Graph d. Scatterplot e. Cumulative Record Correct Answer: C Rationale for correct answer: Line graphs are the most commonly used graphs in ABA for displaying behavioral data over time. They effectively show trends, patterns, and fluctuations in behavior, allowing practitioners to assess the impact of interventions. 4. In ABA, which graphing method is best suited for illustrating the total number of responses accumulated over time, providing a visual representation of the rate of behavior?