The Impact Of Gamified Pronunciation Training On EFL Learners’ Intercultural Communicative Competence And Intelligibility

Driven by the global status of English as a Lingua Franca (ELF), modern English as a Foreign Language (EFL) pedagogy increasingly prioritizes Intercultural Communicative Competence (ICC) and global intelligibility over near-native accents (Fong et al., 2025; Nafisah et al., 2024). Language learning is inherently bounded by socio-cultural dynamics, requiring learners to effectively handle cultural differences during international exchanges (Klimova & Chen, 2024). Consequently, achieving absolute native-like pronunciation has been replaced by the intelligibility principle, which values speech clarity over rigid articulatory perfection (Wang & Wen, 2023).

However, pronunciation instruction remains marginalized in traditional EFL settings, often overshadowed by grammar and vocabulary (Luu et al., 2025). When integrated, instruction frequently relies on mechanical drilling and repetitive imitation, inducing student disengagement, boredom, and academic anxiety (Barcomb & Cardoso, 2020; Cad & Giménez, 2025). These instructional deficiencies impair speech accuracy particularly individual vowels and consonants, leading to miscommunication in cross-cultural encounters (Luu & Nguyen, 2026). Given that psychological determinants like motivation, self-efficacy, and learning attitudes heavily predict pronunciation success (Luu et al., 2025), a structural re-engineering of phonetics instruction is required.

To counter these limitations, gamification—the integration of game elements like points, badges, progression indicators, and challenges into educational settings—offers a viable solution (Luu et al., 2025). Grounded in Self-Determination Theory (SDT), gamified structures satisfy learners' needs for autonomy, competence, and relatedness, thereby fostering intrinsic motivation and sustained engagement (Luu, Nguyen, Do, & Nguyen, 2025). Empirical evidence shows that gamifying pronunciation training via digital platforms directly supports phonological development, making the classroom highly interactive (Barcomb & Cardoso, 2020; Cad & Giménez, 2025). Furthermore, by embedding tasks within a secure, play-oriented environment, gamification acts as an affective buffer that lowers the affective filter, reduces speech anxiety, and normalizes errors to enhance real-world communication readiness (Barcomb & Cardoso, 2020; Luu, 2026).

Despite its pedagogical potential, gamification in language learning remains unevenly applied. Implementations heavily skew toward vocabulary or grammar acquisition, leaving gamified pronunciation instruction under-researched (Barcomb & Cardoso, 2020). Moreover, existing literature often relies on Western-centric models that treat game mechanics merely as external rewards, ignoring how these structures interact with collectivist EFL learners operating under high power distance (Luu et al., 2025). This empirical gap is highly visible in Vietnam, where research on the synergy between gamified pedagogy, intercultural awareness, and speech production remains scarce.

This lack of instructional innovation exacerbates linguistic and psychological anxieties among non-English majors. In Vietnamese public universities, learners consistently struggle with segmental features, lexical ambiguity, and pronunciation-spelling inconsistencies (Luu & Le, 2026; Luu & Nguyen, 2026). These deficits impair their communication psychology, causing severe Intercultural Communication Apprehension (ICA). Consequently, Vietnamese learners experience pervasive hesitation, fear of mistakes, and dread of negative evaluation regarding their speech clarity (Luu, 2025). Because intercultural willingness to communicate relies heavily on language competence, emotional empathy, and confidence (Feng et al., 2025; Luu, 2026), traditional drill methods fail to alleviate this anxiety. Without a theory-driven, gamified framework targeting both acoustic intelligibility and speech apprehension, Vietnamese learners remain structurally hindered from engaging in successful cross-cultural interactions.

To address these empirical and pedagogical gaps, this study primary aims to measure the improvement in English pronunciation intelligibility among Vietnamese EFL learners within simulated intercultural contexts following a gamified training program. Concurrently, it seeks to evaluate changes in learners' levels of Intercultural Communication Apprehension (ICA) under the influence of need-supportive, gamified structures. The study is guided by two specific research questions:

RQ1: To what extent does gamified pronunciation training improve EFL learners' English intelligibility in intercultural communication contexts?

RQ2: How does the integration of gamification in pronunciation instruction affect learners’ intercultural communication apprehension (anxiety)?

METHOD AND MATERIAL

Research Design

This study employs a quantitative quasi-experimental design utilizing an intact-group, pre-test and post-test approach to evaluate the educational intervention without disrupting established academic tracks. The design comprises an experimental group subjected to a theory-driven gamified pronunciation curriculum and a control group exposed to conventional teacher-led drills. Both groups undergo a identical pre-intervention assessment phase consisting of an acoustic intelligibility performance test and a standardized psychological survey. Following a rigorous six-week intervention period, a post-intervention assessment phase identical to the baseline measure is executed. This cross-sectional, comparative setup allows the researcher to statistically isolate the pedagogical effects of game-responsive dynamics while controlling for baseline variances in linguistic ability and affective barriers.

Research Context and Participants

The investigation is situated at a prominent Vietnamese public university where English non-majors face constrained classroom exposure and acute speech anxiety. To ensure pedagogical feasibility and avoid systemic disruption, a convenience sampling technique was combined with purposive criteria to select two intact classrooms representing non-English major demographics.

Participants were explicitly screened based on three strict inclusion criteria: they must be first-year undergraduate students, must possess a validated baseline English proficiency equivalent to the B1 level of the Common European Framework of Reference (CEFR), and must not have prior prolonged exposure to specialized automated speech evaluation software or gamified pronunciation systems. The final sample consists of 74 undergraduate students divided into the Experimental Group (n = 38) and the Control Group (n = 36).

Table 1. Participants’ demographic (N=74)

Research Instruments

Primary data collection relies on two distinct instruments designed to operationalize the core linguistic and psychological constructs. The first instrument is the Pronunciation Intelligibility Performance Test (PIPT), engineered to measure phonological clarity within simulated cross-cultural interactions. The PIPT requires participants to audio-record their production of controlled intercultural role-play scripts containing high-frequency phonetic traps, specifically focusing on segmental vowel-consonant contrasts and suprasegmental elements. These recordings are independently evaluated by two trained human raters using an analytical intelligibility rubric, with inter-rater reliability monitored via Cohen’s Kappa coefficients.

The second instrument is the Intercultural Communication Apprehension and Gamification Survey (ICAGS). The psychological survey contains a total of 15 closed-ended items scored on a uniform 5-point Likert scale ranging from 1 (Strongly Disagree) to 5 (Strongly Agree). The survey is divided into two operationalized subscales. Items 1 to 8 comprise the Intercultural Communication Apprehension Subscale, which adapts McCroskey’s standardized Personal Report of Communication Apprehension (PRCA-24) to target cross-cultural communication anxiety and fear of negative evaluation. Items 9 to 15 form the Gamified Motivation and Engagement Subscale, specifically formulated based on the core constructs of SDT to measure perceived competence, autonomy, and relatedness within gamified instructional spaces.

Table 2. Item of the survey

(Note: Items marked with (R) denote reverse-coded items).

To guarantee rigorous psychometric validity, the initial items were subjected to a comprehensive panel expert review consisting of two senior applied linguists and an educational psychologist, resulting in minor phrasing adjustments to fit the Vietnamese educational context. Pilot testing with 30 non-participating students established baseline structural construct validity. Construct dimensionality was statistical verified through Exploratory Factor Analysis (EFA) using principal axis factoring with Promax rotation, which successfully extracted two clean latent factors with eigenvalues above 1.0 and factor loadings exceeding 0.50, demonstrating no cross-loading items. Internal reliability was confirmed via Cronbach’s alpha coefficients, yielding values of 0.86 for the ICA subscale and 0.89 for the GME subscale, well exceeding the acceptable academic threshold of 0.70.

Data Collection and Analysis

Data collection occurred over three phases, starting with the baseline administration of the pre-test and survey, followed by a six-week instructional intervention, and concluding with identical post-intervention instruments. Quantitative datasets were cleaned and analyzed using IBM SPSS software. Descriptive statistics established demographic characteristics, while inferential statistical procedures were applied to answer the research questions. Paired-samples t-tests evaluated the internal, longitudinal progression of speech accuracy and anxiety reduction within each group. Independent-samples t-tests and Analysis of Covariance (ANCOVA), using pre-test scores as covariates were executed to compare post-intervention mean differences between the experimental and control cohorts, setting statistical significance at p < 0.05.

Ethical Considerations

Ethical clearance was strictly maintained by securing institutional administrative authorization prior to participant recruitment. All students received comprehensive written disclosures detailing the study's precise pedagogical scope, data confidentiality measures, and their right to voluntary withdrawal without academic penalty. Formal informed consent forms were signed, and complete anonymity was protected by replacing all personal identities with encrypted alphanumeric codes during data processing.

FINDINGS AND DISCUSSION

Findings

Research Question 1: Impact on English Intelligibility

To address the first research question regarding the extent to which gamified pronunciation training improves learners' English intelligibility in intercultural contexts, descriptive statistics and inferential statistical analyses were executed. Baseline equivalents were first confirmed, showing no statistically significant difference in the Pronunciation Intelligibility Performance Test (PIPT) pre-test scores between the Experimental Group (M = 54.21, SD = 7.14) and the Control Group (M = 53.89, SD = 6.98), where t(72) = 0.19, p = 0.846. This indicates an identical baseline proficiency before the pedagogical intervention.

Following the six-week instructional period, a paired-samples t-test revealed that both cohorts achieved significant longitudinal growth in speech clarity. However, the experimental group demonstrated a vastly superior increase in performance. To isolate the direct effect of the gamified intervention, an Analysis of Covariance (ANCOVA) was conducted, utilizing the pre-test scores as the covariate to control for any initial individual variances. The ANCOVA results yielded a significant main effect for the instructional method, F(1, 71) = 42.18, p < 0.001, with a large partial eta squared (\eta_p^2 = 0.373). This robust statistical outcome confirms that the integration of game-responsive mechanics led to a significantly higher level of acoustic intelligibility in intercultural interactions compared to conventional teacher-led audio-lingual drilling.

Table 3. Paired-samples t-test

Research Question 2: Impact on Intercultural Communication Apprehension

The second research question examined how the integration of gamification affects learners' Intercultural Communication Apprehension (ICA). Initial survey assessments indicated that both the experimental group (M = 3.88, SD = 0.49) and control group (M = 3.85, SD = 0.52) exhibited moderately high baseline levels of cross-cultural speaking anxiety, showing no significant initial variance, t(72) = 0.26, p = 0.798.

Post-intervention survey data analyzed via an independent-samples t-test and subsequent ANCOVA established a substantial reduction in affective barriers within the gamified environment. The experimental group's self-reported ICA scores decreased dramatically, whereas the control cohort experienced only a negligible, statistically non-significant reduction in speech anxiety. The ANCOVA test confirmed that the post-intervention differences between the two groups were highly significant, F(1, 71) = 56.44, p < 0.001, ηp2 = 0.443. This large effect size underscores that need-supportive, play-oriented structures were uniquely effective at mitigating psychological strain and lowering the affective filter during intercultural speech tasks.

Table 4. ANCOVA  result