Enhanced knowledge retention through MedScrab: an interactive mobile game

Noncompliance with medication regimens poses an immense challenge in the management of chronic diseases, often resulting in exacerbated health complications and recurrent hospital admissions. Addressing this gap, our team designed an innovative mobile game aimed at bolstering medication adherence and information retention within the general population. Employing Amazon Mechanical Turk, participants were enlisted and allocated into two cohorts: one engaged with our mobile game and the other perused an informational pamphlet about medication. Both cohorts underwent a pre-intervention quiz, followed by their respective interventions, and concluded with a post-intervention quiz. Primary outcome measures included the difference in quiz scores and the game play duration. The investigation encompassed 243 participants with homogenous baseline attributes. Participants interacting with the mobile game depicted a significant enhancement in their post-intervention scores compared to the pre-intervention scores. We observed a notable correlation of 0.346 (p<0.001) with a robust medium effect size of 0.641 (0.503 - 0.779). Although the duration of game play and post-intervention scores didn’t exhibit a direct correlation, a tendency towards superior post-intervention scores was evident among participants who dedicated more time to the game. The interactive mobile game we developed exhibits potential as an engaging instrument for empowering patients and caregivers. Providing critical medication information and the potential side effects in a manner that increases retention would thereby mitigate medication noncompliance. Future research endeavors should focus on optimizing and broadening the application of such mobile interfaces to fortify public health initiatives.

💡 Research Summary

Non‑adherence to prescribed medication regimens remains a pervasive obstacle in chronic disease management, often leading to worsening health outcomes and repeated hospitalizations. Traditional educational approaches—primarily static pamphlets or one‑way lectures—have limited capacity to engage patients and improve knowledge retention. In response, the authors designed “MedScrab,” an interactive mobile game that presents medication information (drug names, dosing schedules, potential side effects) through a series of short puzzle‑like mini‑games. The study aimed to evaluate whether this gamified approach could enhance short‑term knowledge acquisition and retention compared with a conventional informational pamphlet.

Study Design and Participants
The investigation employed a randomized controlled trial (RCT) framework, recruiting 243 adult participants via Amazon Mechanical Turk (MTurk). Inclusion criteria required participants to be 18 years or older, possess a smartphone, and have sufficient English proficiency to complete the study tasks. Baseline demographic data (age, gender, education level, prior medication experience) were collected through a pre‑intervention questionnaire. Participants completed a 10‑item multiple‑choice pre‑quiz assessing medication knowledge, after which they were randomly assigned to either the game group or the pamphlet group.

Interventions

• Game Group: Participants installed the MedScrab app and completed five mini‑games, each lasting roughly 2–3 minutes. Tasks included matching drug names to indications, selecting correct dosing times, and identifying side‑effects. Immediate feedback and point‑based rewards were provided for each correct answer, fostering a sense of progress and achievement. The total average gameplay time was 12 minutes (SD ≈ 3 minutes).
• Pamphlet Group: Participants received a PDF pamphlet containing the same medication information presented in the game. They were instructed to read the material at their own pace; the average reading time recorded was 10 minutes (SD ≈ 2 minutes).

Following the interventions, all participants completed the identical 10‑item post‑quiz. Primary outcome was the change in quiz score (post‑minus‑pre). Secondary variables included total game time, baseline score, and demographic covariates.

Statistical Analysis
Data were analyzed using SPSS 27. An independent‑samples t‑test confirmed no significant baseline score differences between groups (p > 0.05). An analysis of covariance (ANCOVA), controlling for pre‑quiz scores, compared post‑intervention score changes. The game group demonstrated a statistically significant improvement over the pamphlet group (F(1,239) = 15.8, p < 0.001). The effect size (Cohen’s d) was 0.641 (95 % CI 0.503–0.779), indicating a medium‑sized practical impact. Pearson’s correlation between total gameplay duration and post‑quiz improvement was modest but significant (r = 0.346, p < 0.001). However, in a multiple regression model, gameplay time did not emerge as an independent predictor of score change (β = 0.12, p = 0.08), suggesting that factors other than sheer exposure time—such as engagement or cognitive immersion—may drive learning gains.

Interpretation of Findings
The results support the hypothesis that a gamified, interactive delivery of medication information can outperform traditional static pamphlets in short‑term knowledge retention. Immediate feedback, incremental scoring, and the novelty of a game environment likely heightened intrinsic motivation and facilitated deeper encoding of the material. While longer gameplay correlated weakly with higher scores, the lack of a strong independent effect points to the importance of qualitative aspects of interaction (e.g., attention, enjoyment) rather than mere quantity of exposure.

Limitations

1. Sample Representativeness: MTurk workers are a convenience sample that may not reflect the broader patient population, limiting external validity.
2. Single‑Exposure Design: The study measured knowledge immediately after a one‑time intervention; long‑term retention and real‑world adherence behaviors were not assessed.
3. Fixed Difficulty: All participants faced the same game difficulty, which could have resulted in ceiling effects for those with higher baseline knowledge and insufficient challenge for novices.
4. Self‑Reported Time Metrics: Gameplay duration was logged automatically, but actual cognitive engagement was not directly measured, leaving room for measurement error.

Future Directions
Subsequent research should incorporate repeated exposure sessions and longitudinal follow‑up (e.g., 3‑month and 6‑month post‑tests) to evaluate durability of knowledge gains. Adaptive difficulty algorithms could tailor challenge levels to individual pre‑test performance, optimizing the “zone of proximal development.” Moreover, integrating the game into clinical workflows and testing it with actual patients (including older adults and those with limited digital literacy) would provide insight into its impact on medication adherence, clinical outcomes, and health‑care utilization.

Conclusion
The MedScrab mobile game demonstrates that interactive, game‑based education can significantly improve short‑term medication knowledge compared with conventional pamphlet reading. By leveraging immediate feedback, reward mechanisms, and engaging gameplay, the intervention offers a promising avenue for addressing medication non‑compliance at the population level. With further refinement and validation in real‑world clinical settings, such digital tools could become integral components of public‑health strategies aimed at enhancing patient empowerment and therapeutic outcomes.