HCI 520 Learning Centered Design Project
Design a GovEd e-Learning System and conduct an experimental comparison to measure its instructional effectiveness
Does the GovEd e-learning pretest, pretraining, and posttest cause learning?
City of Chicago government and the roles and responsibilities that support local government
Self-paced e-learning
Intended learning outcomes based on the Revised Bloom's Taxonomy Table (RBT) and Knowledge dimension
Design principles based on e-Learning and the Science of Instruction by Ruth Colvin Clark and Richard E. Mayer
Limited participant pool
Limited participant documentation
Limited access to participant demographics
Limited learning objective-level data
The GovEd e-learning process shows a statistically significant and practically meaningful improvement in learner performance
Task flows support successful task completion
Goals span multiple levels of RBT
The GovEd e-Learning System provides a defensible business case
Research establishes a baseline for iteration
Research reduces the risk in decision-making
Designed a pretest, pretraining session, and posttest sequence to measure knowledge gain. Used Qualtrics to conduct the experimental comparison and developed a website for the pretraining session.
Participants received a Qualtrics study link and entered the following task flows:
The pretest and posttest consisted of one name question and 11 City of Chicago government questions.
| Question | Learning Objective | |
|---|---|---|
| 1. | What is your name? | N/A |
| 2. | What does the executive branch of the government do? | LO2, LO3 |
| 3. | What does the legislative branch of the government do? | LO2, LO3 |
| 4. | What does the judicial branch of the government do? | LO2, LO3 |
| 5. | Which of the following are city-wide elected positions in the City of Chicago? | LO1, LO4 |
| 6. | What does the mayor's office do? | LO2, LO3 |
| 7. | What does the City Clerk do? | LO2, LO3 |
| 8. | What does the Treasurer's Office do? | LO2, LO3 |
| 9. | What is a Chicago ward? | LO2, LO5 |
| 10. | How many wards are there in the City of Chicago? | LO1, LO5 |
| 11. | What does an alderman do? | LO2, LO3 |
| 12. | What is the City Council? | LO1, LO5 |
All responses were recorded in Qualtrics. None of the participants received pretest or posttest results, but three participants requested verbal feedback to compare their before and after results. Any information collected was used only for the purposes of this study.
The study identified 16 participants from academic, personal, and professional networks who live, work, or attend school in Chicago or Chicago suburbs. Twelve participants received the Qualtrics study link along with a brief course description and the option to opt or drop out of the study at any point. In addition, four HCI 520 students received the Qualtrics study link but did not receive a brief description with the option to opt or drop out.
The research documentation recorded nine of the 16 participants. All names were anonymized or ommitted from the research documentation.
| Age Range | Education | |
|---|---|---|
| 1. | 21+ | Master's Degree |
| 2. | 21+ | Master's Degree |
| 3. | 21+ | Master's Degree |
| 4. | 21+ | Master's Degree |
| 5. | 21+ | Bachelor's Degree |
| 6. | 21+ | High School |
| 7. | 13+ | High School |
| 8. | 13+ | High School |
| 9. | 13+ | High School |
Seven participants (n = 7) completed the pretest, pretraining session, and postest. The pretest and posttest consisted of the same 11 questions. The data table within this section (See also data analysis spreadsheet) reflects the correct answers (raw number of items) and scores (number as a percentage).
A paired-samples t-test and Cohen's dz were used to assess statistical and practical significance, since these methods account for the correlation between each participant's pretest and posttest scores. The results were evaluated against conventional thresholds: p < 0.05 for statistical significance and d > .8 for a large practical effect.
Data
| Participant | Pretest: Correct | Pretest: Score | Posttest: Correct | Posttest: Score | Difference |
|---|---|---|---|---|---|
| 1. | 6 | 55% | 8 | 73% | 2 |
| 2. | 8 | 73% | 11 | 100% | 3 |
| 3. | 6 | 55% | 9 | 82% | 3 |
| 4. | 4 | 36% | 4 | 36% | 0 |
| 5. | 5 | 45% | 10 | 91% | 5 |
| 6. | 9 | 82% | 10 | 91% | 1 |
| 7. | 8 | 73% | 11 | 100% | 3 |
Descriptive Statistics
Pretest
Posttest
Paired-Samples T-Test and P-Value Calculation
Step 1: Calculate the difference between correct pretest and posttest answers
Step 2: Calculate the mean
Step 3: Calculate the standard deviation of differences
Step 4: Calculate t
Step 5: Calculate the degrees of freedom
Step 6: Calculate the p-value
Effect Size Calculation
Step 1: Find the difference between average correct answers
Step 2: Divide by the standard deviation of differences
Effect size is 1.50 > 0.8
The seven participants completed the task flows for the pretest, pretraining session, and posttest. Their average scores improved from 60% to 82%. This shows that the pretraining session significantly improved learner performance (p = 0.007), with a large practical effect (Cohen's dz = 1.50). Note: One participant's pretest and posttest scores did not change and remained at 36%.
The GovEd e-learning pretest, pretraining, and posttest indicate improved learner performance. Participants showed measurable gains in overall scores, reflecting progress toward learning outcomes from remember/recall to apply/execute, though item-level data is needed to confirm which specific Learning Objectives were achieved.
Future iterations can address the four challenges listed above and expand on measuring design effectiveness:
Together, these adjustments can better answer the research question of whether the GovEd e-Learning System causes learning.
AI disclaimer: This case study uses Claude.ai to proofread copy, validate the data analysis, and collaborate to break down the calculation processes.