The study, published in Frontiers in Psychology, drew on responses from 691 Cantonese-speaking undergraduates in Hong Kong who listened to recordings of speakers reading the same short passage. The listeners rated each speaker’s competence and warmth, the strength of their accent, and how easy they were to understand. Crucially, the researchers also measured how much threat each participant perceived from Mainland Chinese people, a socially and politically salient outgroup in Hong Kong during the period the data were collected, between 2018 and 2020.

The theoretical backdrop is Intergroup Threat Theory, which holds that people who believe an outgroup threatens their group’s resources or values respond with hostility. Threats come in two flavors: realistic threats to status, power, and material resources, and symbolic threats to values, norms, and worldviews. Decades of research show that perceived threat predicts negative attitudes toward outgroups. What makes the new study striking is its suggestion that this hostility leaks into something as seemingly objective as speech perception itself.

The participants each heard eight speakers: some speaking Cantonese, the ingroup language, and some speaking Putonghua, the outgroup’s language. Within each language, speakers were either native or nonnative, with the nonnative speakers producing accented speech shaped by their first language. The design allowed the researchers to test a subtle prediction: threat should bias perception only when outgroup members speak the ingroup’s language, because that is the comparison in which the ingroup can most favorably distinguish itself.

That is largely what the data showed. Using multilevel regression models that accounted for ratings nested within participants, the team found that greater perceived threat predicted lower competence ratings specifically for Putonghua-accented Cantonese speakers – Mainlanders speaking the Hong Kong language. Threat did not meaningfully predict evaluations of native Putonghua speakers, whose superior fluency in their own language was acknowledged regardless of how threatened a listener felt. This selective pattern is important: a general surge of negativity toward outgroup voices would have penalized both, but it did not.

The effects on speech perception were even more revealing. Participants high in perceived threat rated Putonghua-accented Cantonese speech as significantly more accented and significantly harder to understand. They showed no such bias toward native Cantonese speakers, and none toward Cantonese-accented Putonghua speakers. In other words, listeners inflated the perceived speech markers of outgroup members only on the dimension where the ingroup would come out ahead – a maneuver the authors interpret as social creativity, a strategy from social identity theory in which group members redefine comparisons to secure positive distinctiveness.

Mediation analyses then tied the pieces together. The pathway from threat to more negative speaker evaluations ran through biased speech perception: threat predicted stronger perceived accent and lower comprehensibility, which in turn predicted worse competence and warmth ratings. Notably, the comprehensibility leg of this chain was far more consistent than the accent leg. Robustness checks across the three datasets and across different accent levels showed that the accent-strength effect was fragile – appearing only in the 2018 data and only for mildly accented speakers – whereas the comprehensibility effect held steady. Perceived ease of understanding, not accent per se, appears to be the pivotal mediator.

These findings align with the fluency principle in language-attitudes research: speech that is harder to process triggers negative affect and harsher trait judgments. Earlier work has shown that comprehension aids such as subtitles improve evaluations of accented speakers, while barriers like background noise damage them. The new study adds a non-linguistic twist – the listener’s intergroup attitudes can manufacture the very processing difficulty that then justifies their negative judgment. The authors caution that because threat was measured after the listening task and all variables were collected in quick succession, the causal chain cannot be firmly established, and reverse pathways remain plausible.

The practical stakes are considerable, particularly in education and workplaces where accented speakers are evaluated on high-stakes dimensions. If students or instructors are judged through the lens of intergroup threat, assessments of their speech may reflect prejudice as much as performance. The research points toward two promising interventions: increasing exposure to and familiarity with nonnative accents, which reliably improves comprehension and social judgments, and fostering positive intergroup contact, which is known to reduce perceived threat. Bilingual classroom interaction between native Cantonese and Putonghua speakers could, the authors suggest, work through both channels at once.

The study also carries caveats about generalizability. All speakers read the same passage, only two speakers represented each accent level, nonnative accent levels were collapsed in the main analyses, and the data were gathered during a period of extraordinary social upheaval, when perceived threat was likely elevated beyond typical levels. The findings may therefore be a snapshot of a particular moment in Hong Kong’s intergroup history. Still, the core message travels: what we hear is not only a function of what is said, but of who we believe is saying it and how threatened we feel. In linguistically diverse societies, reducing perceived threat and easing the processing of accented speech may be twin keys to fairer listening.

Subject of Research: How perceived intergroup threat biases speech perception and social evaluations of accented speakers in Hong Kong

Article Title: Comprehension under threat: outgroup threat predicts perceived accent strength, ease of comprehension, and speaker evaluations

Article References: Shum, P. L.-C., Tse, C.-S., & Wright, S. C. (2026). Comprehension under threat: outgroup threat predicts perceived accent strength, ease of comprehension, and speaker evaluations. Frontiers in Psychology, 17, Article 1835739. https://doi.org/10.3389/fpsyg.2026.1835739

Image Credits: AI Generated

DOI: 10.3389/fpsyg.2026.1835739

Keywords: intergroup threat, language attitudes, nonnative accents, speech perception, processing fluency, comprehensibility, Hong Kong, Cantonese, Putonghua, social creativity, stereotyping, Comprehension