Language and Speech, Ahead of Print.
This study investigates the sound system of heritage speakers (henceforth, HSs) as they shift dominance from their heritage language to their majority language. Specifically, it analyzes the production of intrusive vowels in Spanish consonant clusters across the lifespan of HSs, focusing on tautosyllabic clusters (i.e., /Cɾ/) and heterosyllabic clusters (i.e., /ɾ.C/). Semi-spontaneous speech was elicited from three age groups of Spanish HSs—younger children, older children, and adults—for whom American English is the majority language, as well as from three age-matched groups of non-heritage Spanish speakers raised in Mexico. The presence and duration of intrusive vowels were examined, with the latter calculated as a ratio of intrusive vowel duration to tap duration. Overall, the results indicate that all speaker groups more frequently produce consonant clusters with intrusive vowels than without. However, Spanish HSs produced fewer and shorter intrusive vowels compared with their non-heritage counterparts. In addition, heritage and non-heritage speakers exhibited a lower rate of intrusive vowel production in the 5-to-8 -year-old group compared with adults. Despite this, the absence of an interaction between age group and speaker type suggests a parallel pattern of change in intrusive vowel production across all ages. Voicing emerged as the most consistent phonetic factor, predicting a higher rate of intrusive vowels with a longer duration relative to the tap.

Language and Speech, Ahead of Print.
Tonal coarticulation occurs when adjacent tones affect the production of each other, and this often induces changes in both F0 and voice quality of the tones. In Mandarin, F0 height of the target tone is affected by adjacent tones through both carryover assimilation and anticipatory dissimilation. In addition, voice quality is found to be largely dependent on F0, such that lower F0 induces creakier quality, regardless of tone. Given this dependency of voice quality on F0, it is unclear how this interaction manifests in the context of coarticulated tones. This study investigates the relationship between F0 and voice quality changes in coarticulated tones in three-tone sequences. Voice quality is assessed both acoustically and articulatorily using electroglottography (EGG). Our study confirms both carryover and anticipatory effects on F0. Changes in voice quality are largely expected from the direction of F0 changes. However, tone-specific exceptions especially in the dipping Tone 3 and falling Tone 4 are present, which we interpret as support for the (potential) independence of voice quality from F0.

Language and Speech, Ahead of Print.
While the field of sociophonetics generally views social meanings of linguistic features as indexical and socially constructed, prosodic features have long been argued to have supposedly natural, iconic, universal associations, according to “biological codes,” for example, the frequency code that links high versus low pitch with small versus large body size, female versus male gender (via sexual dimorphism), and hence, affective meanings like uncertainty versus confidence. This study looks at affective meanings of two features of New Zealand English associated with opposing pitch extremes: Uptalk with high pitch and creaky voice with low. In a matched-guise experiment, listeners of different ages were asked to rate short speech samples from young women containing uptalk and creaky voice on a series of affective meaning scales. Results showed that while uptalk was rated more negatively overall, ratings largely aligned with predicted iconic associations of pitch for each scale. However, there were differences by listener age, especially for creak. We argue these results show that the availability of iconic associations of pitch depends on social factors such as the listeners’ beliefs and experience, such as group differences related to age, which affect the seeming naturalness of a given iconic link.

Language and Speech, Ahead of Print.
Whispering is a common adverse hearing condition. However, it is still unclear whether older adults have more difficulty perceiving emotions in whispered speech, and whether hearing loss contributes to these difficulties. To fill this research gap, we compared emotional prosody perception under phonated and whispered conditions in three groups of participants (younger adults, and older adults with and without hearing loss). The results revealed that both older adult groups were less accurate when processing emotions in whispered speech. Moreover, older adults with hearing loss performed worse than normal-hearing peers and younger adults in both phonated and whispered conditions. This study presented the first empirical data on the ability of older adults with hearing loss to recognize emotions in whispered speech. The findings highlighted the negative impact of whispering on emotional prosody recognition among older adults, with hearing loss exacerbating these difficulties.

Language and Speech, Ahead of Print.
Previous studies have demonstrated that focus significantly alters sentential prosody in Persian. However, research on the phonetic realization of non-corrective narrow focus is scarce compared to that on broad and corrective focus. This paper presents a systematic production study investigating whether Persian speakers distinguish between three focus structures on target words that bear a pitch accent, that is, broad, narrow, and corrective focus. In a multidimensional phonetic analysis, we investigated the parameters of intensity, duration, and F0. Taking a local perspective, results show that the duration of the target word is a robust cue for focus marking in both syllables of the word, exhibiting a three-step pattern (corrective > narrow > broad). In the first syllable, intensity is a reliable cue to distinguish broad focus from the other two focus types, with higher intensities in broad focus. In the accented syllable, a different two-step pattern is observed, with narrow and corrective focus showing larger F0 spans than broad focus. Taking a global perspective that considers the parts of the utterance before and after the target word, we find a lowering of F0 and decreased intensity for narrow and corrective focus in the pre-target region. In the post-target region, we find strong evidence for differences in mean F0 and intensity with lower F0 in corrective focus than in broad and narrow focus, while the intensity is lower in narrow and corrective focus than in broad focus. Our analysis deepens our understanding of Persian prosody.

Language and Speech, Ahead of Print.
This study investigated the role of systematicity in word learning, focusing on Semitic morpho-phonology where words exhibit multiple levels of systematicity. Building upon previous research on phonological templates, we explored how systematicity based on such templates, whether they encode meanings or not, influenced word learning in preschool-age Hebrew-speaking children. We examined form–meaning systematicity, where words share phonological templates and carry similar categorical meanings of manner-of-motion (e.g., finupál and bizudáx carry the meaning of skipping), and form-only systematicity, where words are phonologically similar but do not share a meaning (e.g., finupál and bizudáx belong to different categories of manner-of-motion). We aimed to discern how these systematicity types impact the learning of the meaning of the word as a whole, that is, the encoding of visual form combined with manner-of-motion. Using novel Semitic-like stimuli, our experiments demonstrated that different types of systematicity involve different effects on word learning. Experiment 1 showed that form–meaning systematicity hindered the learning of the manner-of-motion. In contrast, Experiment 2 revealed that form systematicity facilitated learning these features. The findings suggest a complex interplay of top-down and bottom-up processes in word learning, expanding our understanding of systematicity in word learning.

Language and Speech, Ahead of Print.
Semitic languages such as Hebrew and Arabic are known for having a non-concatenative morphology: words are typically built of a combination of a consonantal root, typically tri-consonantal (e.g., k-t-b “related to writing” in Modern Standard Arabic (MSA)), with a prosodic template. Research on Hebrew language development suggests early sensitivity to frequently occurring templates. For the Arabic dialects, little is known about whether implicit sensitivity to non-concatenative morphology develops at a young age through exposure to speech, and how templatic the spoken language is in comparison to MSA. We focus on Lebanese Arabic. We hypothesized that prolonged contact with French and English may have “diluted” the salience of roots and patterns in the input. We used three different corpora of adult-directed-speech (ADS), child-directed-speech (CDS), and child speech. We analyzed the root and pattern structures in the 50 most frequent Lebanese Arabic word types in each corpus. We found fewer words with templatic patterns than expected among the most frequent words in ADS (35/50), even fewer in CDS (23/50) and still fewer in the children’s target words (15/50). In addition, only a minority contains three root consonants in their surface forms: 22 in ADS, 15 in CDS, and only 7 in words targeted by the children. We conclude that Semitic structure is less evident in either input to children or words targeted by children aged 1–3 than has been assumed. We discuss implications for the development of sensitivity to templatic structure among Lebanese-acquiring children.

Language and Speech, Ahead of Print.
Sound correspondences (SCs) have been found to be learnable phonological patterns in second dialect acquisition. Cross-linguistically, SCs consist of similar as well as distinct variants. However, in the study of SC learning, the effect of the similarity between the corresponding variants remains understudied. The salience hypothesis proposes that distinct dialect variants are more salient and learnable, while the learning bias hypothesis in phonological learning predicts that SC patterns with similar variants are preferred by learners. We conducted an artificial language learning experiment to test how sound similarity affects SC learning. Specifically, the degrees of similarity between variants were evaluated from multidimensional metrics, including phonetic and phonological measures, which are cross-validated with typological evidence. While there was no effect of variant similarity in learning simple one-to-one SCs, a preference for the most distinct dialect variant was found in the learning of SCs exhibiting more complex mapping structures (i.e., two-to-one and one-to-two). Our results confirm a preference for distinct variants in SC learning, although this effect relies on two conditions. First, the preference for distinction emerges only in the presence of complex mapping structures. Second, this preference requires an activation threshold, in that the distance of the SC must be sufficiently large to trigger the effect.

Language and Speech, Ahead of Print.
Research in the last few decades has examined the intersection between phonetics and politeness in multiple languages. While most of the studies have analyzed the role of politeness on suprasegmental features (i.e., pitch or duration), few have considered the key contextual variables of power, distance, and imposition. This study investigates the systematic effects of power, distance, and imposition on the final intonational contours of polar questions in Central Peninsular Spanish native speakers. A total of 36 native speakers from Madrid completed a contextualized reading-sentence task in which they read aloud paragraph-length contextualizing situations and the target polar questions. The situations were balanced for two levels of power (high/low), distance (high/low), and imposition (high/low). The results from the contextualized reading-sentence task showed that the low-rising final intonational contour (L*H%) was the most employed intonational contour in every context, while the remaining contours were H*H%, H*L%, L*L%. The results confirm that L*H% is the prevailing final intonational contour in Spanish polar questions while also shedding light on the variability of other intonational configurations. In addition, the study determines whether final nuclear contours are impacted by power, distance, and impositions. The findings are discussed within the framework of Politeness Theory and the work on the phonetics and pragmatics interface.

Language and Speech, Ahead of Print.
Adapting one’s speaking style is particularly crucial as children start interacting with diverse conversational partners in various communication contexts. The study investigated the capacity of preschool children aged 3–5 years (n = 28) to modify their speaking styles in response to background noise, referred to as noise-adapted speech, and when talking to an interlocutor who pretended to have hearing loss, referred to as clear speech. We examined how two modified speaking styles differed across the age range. Prosody features of conversational, noise-adapted, and clear speech were analyzed, including F0 mean (Hz), F0 range (Hz), energy in 1–3 kHz range (dB), speaking rate (syllables per second), and the number of pauses. Preschoolers adjusted their prosody features in response to auditory feedback interruptions (i.e., noise-adapted speech), while developmental changes were observed across the age range for clear speech. To examine the functional effect of the modified hyper-speech produced by the preschoolers, speech intelligibility was also examined in adult listeners (n = 30). The study found that speech intelligibility was higher in noise-adapted speech than in conversational speech across the preschool age range. A noticeable increase in speech intelligibility for clear speech was observed with the increasing age of preschool talkers, aligning with the age-related enhancements in acoustic prosody for clear speech. The findings indicate that children progressively develop their ability to modify speech in challenging environments, initiating and refining adaptations to better accommodate their listeners.

Language and Speech, Ahead of Print.
The present study examines the perceptual salience of tonal speech errors compared with segmental errors (consonant and vowel). Tonal errors are observed less often than segmental errors. We thus hypothesize that tone errors are more easily ignored during transcription tasks because tones may have lower perceptual salience relative to segments. We test this hypothesis in Mandarin, via a number reconstruction task. Sixty-nine Mandarin native listeners heard sequences of numbers in which one number was altered by substituting its vowel, consonant, or tone. They were asked to identify which number that was. We found that Mandarin listeners identified the original number most accurately when consonants were substituted. They were the least accurate when vowels were substituted. For tone substitution, the accuracy was lower than for consonant substitution, but not significantly different from vowel substitution. Reaction times to identify a number with tone substitution were comparable to those for other types of substitutions. The results show that, contrary to our hypothesis, tone errors are not perceptually less salient than segmental errors. Specifically, tone errors are as salient as vowel errors and more salient than consonant errors, suggesting a similar phonological status shared by tone, vowel, and consonant in constraining word selection.