Infants' preference for speech is stable across the first year of life: Meta-analytic evidence

Previous work suggested that humans' sophisticated speech perception abilities stem from an early capacity to pay attention to speech in the auditory environment. What are the roots of this early preference? We assess the extent to which it is due to it being a vocal sound, a natural sound, and a familiar sound through a meta-analytic approach, classifying experiments as a function of whether they used native or foreign speech and whether the competitor, against which preference is tested, was vocal or non-vocal, natural or artificial. We also tested for the effect of age. Synthesizing data from 791 infants across 39 experiments, we found a medium effect size, confirming at the scale of the literature that infants reliably prefer speech over other sounds. This preference was not significantly moderated by the language used, vocal quality, or naturalness of the competitor, nor by infant age. The current body of evidence appears most compatible with the hypothesis that speech is preferred consistently as such and not just due to its vocal, natural, or familiar nature. We discuss limitations of the extant body of work on speech preference, including evidence consistent with a publication bias and low representation of certain stimuli types and ages.     

Effects of Familiarity and Feeding on Newborn Speech–Voice Recognition

Newborn infants preferentially orient to familiar over unfamiliar speech sounds. They are also better at remembering unfamiliar speech sounds for short periods of time if learning and retention occur after a feed than before. It is unknown whether short‐term memory for speech is enhanced when the sound is familiar (versus unfamiliar) and, if so, whether the effect is further enhanced by feeding. We used a two‐factorial design and randomized infants to one of four groups: prefeed‐unfamiliar, prefeed‐familiar, postfeed‐unfamiliar, and postfeed‐familiar. Memory for either familiar or unfamiliar speech (the infant's mother saying “baby” versus a female stranger saying “beagle”) was assessed using head turning to sound in an habituation–recovery paradigm and a retention delay of 85 sec either before or after a typical milk feed. Memory for the familiar speech–voice was enhanced relative to the unfamiliar speech–voice, expressed by significantly less head turning toward the habituated sound stimulus when it was re‐presented after the delay. Memory for familiar or unfamiliar speech was not significantly enhanced from pre‐ to postfeeding, nor was there a significant interaction. This is the first demonstration in newborns that familiarity enhances short‐term memory for speech–voice sound.     

Analysis of the Public Speech Given by British Prime Minister Cameron Persuading Scotland to Stay in the UK

Before the independenceof Scotland.prime minister Cameron gave this speech so as to persuade Scotland not splitting from the UK.Cameron' s speech is very exiting and appealing.This paper analysize his public speech from the stylistic perspectives to help us to have better understanding of its language features and give us further inspirations of the public speech.     

Youth,slang, and pragmatic expressions: Examples from Brazilian Portuguese1

This article draws on an ethnographic study of the stigmatized speech style of poor black male youth in Rio de Janeiro, Brazil. These youth are said to speak gíria (‘slang’), and their speech is often described as incomprehensible to the Brazilian middle class. Speakers and listeners point to a wide range of pragmatic expressions as some of the most salient linguistic features associated with this speech style. This article presents examples from Brazilian Portuguese slang, in which youth draw on sound words, obscenities, address forms, and addressee‐oriented tags to create new pragmatic markers and forms of indefinite reference. It is argued that these pragmatic expressions offer multiple opportunities for speakers to convey stance, novelty, and style, social goals long associated with slang. This data suggests that we broaden the purview of slang beyond the lexicon to investigate the ways in which speakers actively innovate within the area of pragmatics.     

Infant‐Directed Prosody Helps Infants Map Sounds to Meanings

Adults typically use an exaggerated, distinctive speaking style when addressing infants. However, the effects of infant‐directed (ID) speech on infants' learning are not yet well understood. This research investigates how ID speech affects how infants perform a key function in language acquisition, associating the sounds of words with their meanings. Seventeen‐month‐old infants were presented with two label‐object pairs in a habituation‐based word learning task. In Experiment 1, the labels were produced in adult‐directed (AD) speech. In Experiment 2, the labels were produced in ID prosody; they had higher pitch, greater pitch variation, and longer durations than the AD labels. We found that infants failed to learn the labels in AD speech, but succeeded in learning the same labels when they were produced in ID speech. Experiment 3 investigated the role of variability in learning from ID speech. When the labels were presented in ID prosody with no variation across tokens, infants failed to learn them. Our findings indicate that ID prosody can affect how readily infants map sounds to meanings and that the variability in prosody that is characteristic of ID speech may play a key role in its effect on learning new words.     

A Bayesian meta-analysis of infants’ ability to perceive audio–visual congruence for speech

This paper quantifies the extent to which infants can perceive audio–visual congruence for speech information and assesses whether this ability changes with native language exposure over time. A hierarchical Bayesian robust regression model of 92 separate effect sizes extracted from 24 studies indicates a moderate effect size in a positive direction (0.35, CI [0.21: 0.50]). This result suggests that infants possess a robust ability to detect audio–visual congruence for speech. Moderator analyses, moreover, suggest that infants’ audio–visual matching ability for speech emerges at an early point in the process of language acquisition and remains stable for both native and non-native speech throughout early development. A sensitivity analysis of the meta-analytic data, however, indicates that a moderate publication bias for significant results could shift the lower credible interval to include null effects. Based on these findings, we outline recommendations for new lines of enquiry and suggest ways to improve the replicability of results in future investigations.     

Successful Word Recognition by 10‐Month‐Olds Given Continuous Speech Both at Initial Exposure and Test

Most words that infants hear occur within fluent speech. To compile a vocabulary, infants therefore need to segment words from speech contexts. This study is the first to investigate whether infants (here: 10‐month‐olds) can recognize words when both initial exposure and test presentation are in continuous speech. Electrophysiological evidence attests that this indeed occurs: An increased extended negativity (word recognition effect) appears for familiarized target words relative to control words. This response proved constant at the individual level: Only infants who showed this negativity at test had shown such a response, within six repetitions after first occurrence, during familiarization.     

Hate speech harms: a social justice discussion of disabled Norwegians’ experiences

This article presents findings from a survey on hate speech reported by disabled people in Norway. Previous British and American research shows that disabled people are more likely than their non-disabled peers to be the victims of hate speech and hate crime. In our study, 38% reported at least one experience of hate speech during the previous 12 months. The respondents reported a wide range of consequences of hate speech related to psychological, social and societal issues. The findings reveal that people place restrictions on their own lives as a result of being exposed to hate speech, including raising their opinion in public debates. Drawing on the work of Nancy Fraser, we discuss the mechanisms that prevent disabled people from participating in society on equal terms. We conclude that to combat hate speech, transformative strategies need to be applied.     

The social stratification of tongue shape for postvocalic /r/ in Scottish English1

The sociolinguistic modelling of phonological variation and change is almost exclusively based on auditory and acoustic analyses of speech. One phenomenon which has proved elusive when considered in these ways is the variation in postvocalic /r/ in Scottish English. This study therefore shifts to speech production: we present a socioarticulatory study of variation of postvocalic /r/ in CVr (e.g. car) words, using a socially‐stratified ultrasound tongue imaging corpus of speech collected in eastern central Scotland in 2008. Our results show social stratification of /r/ at the articulatory level, with middle‐class speakers using bunched articulations, while working‐class speakers use greater proportions of tongue‐tip and tongue‐front raised variants. Unlike articulatory variation of /r/ in American English, the articulatory variants in our Scottish English corpus are both auditorily distinct from one another, and correlate with strong and weak ends of an auditory rhotic continuum, which also shows clear social stratification.     

2014 Presidential Address to the MSSA Membership: Academic Freedom,Free Speech and the MSSA Community of Scholars

This article includes the text from my Presidential Address given at the annual banquet of the Mid-South Sociological Association in November of 2014. In the speech, I highlight the challenges to academic freedom, the importance of a right to free speech, and the responsibility that comes with having both. I further argue that the MSSA, as an association of professionals, draws on the camaraderie it fosters in our organization to support and aid those who fight against the threats to academic freedom.     

'I don't speak with a Geordie accent, I speak, like, the Northern accent': Contact-induced levelling in the Tyneside vowel system

Evidence is presented in this paper of the levelling of the Tyneside (Newcastle) English vowel system toward that of a putative regional standard. This process is hypothesised to follow from the fragmentation of tight-knit urban communities that formed after large-scale immigration to Tyneside from elsewhere in the British Isles during the 18th and 19th centuries. High levels of dialect contact brought about by this influx are argued to have promoted the creation of an urban koiné, which in its contemporary form appears increasingly to be losing specifically local features. In addition to contact and mobility as agents of change, the history of unusually acute stigma attached to Tyneside speech should be considered. These and other social factors inform an analysis of the FACE and GOAT variables in the speech of 32 contemporary Tyneside English speakers of various ages, both sexes and from two social class groups.     

Infant‐Directed Speech Is Modulated by Infant Feedback

When mothers engage in infant‐directed (ID) speech, their voices change in a number of characteristic ways, including adopting a higher overall pitch. Studies have examined these acoustical cues and have tested infants' preferences for ID speech. However, little is known about how these cues change with maternal sensitivity to infant feedback in the context of interaction. In this study, each mother watched her infant (located in an adjacent sound booth) on a video screen and talked to him or her through a microphone. The mother believed that her infant could hear her voice and she attempted to make her infant happy through her vocalizations. In reality, the infant could not hear her voice. The mother's ID speech was analyzed in real time for changes in mean pitch. For half of the infant–mother dyads an experimenter surreptitiously positively engaged the infant when the voice analysis revealed a rise in pitch, thereby producing positive reinforcement to the mother for natural higher pitched ID speech. The other half were reinforced for lower pitched ID speech. Mothers raised their pitch significantly more in the former than the latter condition, illustrating that the pitch of ID speech is dynamically affected by feedback from the infant.     

Some Issues in Infant Speech Perception: Do the Means Justify the Ends?

A major focus of research on language acquisition in infancy involves experimental studies of the infant''s ability to discriminate various kinds of speech or speech-like stimuli. This research has demonstrated that infants are sensitive to many fine-grained differences in the acoustic properties of speech utterances. Furthermore, these empirical findings have led investigators to theorize about how the infants internally process and represent speech stimuli. This paper examines one particular experimental protocol frequently used in these experiments: the Head-Turn Preference Procedure. It will be shown that this procedure is methodologically flawed and the theoretical conclusions drawn from its results are not adequately warranted.     

Six‐Month‐Old Infants Prefer Speech with Raised Formant Frequencies

Voices can be characterized by their fundamental frequency as well as by speech timbre characteristics, such as formant frequencies. While infants' responses to fundamental frequency characteristics are well established, very little is known about how infants respond to changes in formant frequencies. This study tested whether 6‐month‐old infants prefer listening to speech with raised formant frequencies over speech with lowered formant frequencies. Naturally spoken utterances were acoustically manipulated to render raised‐formant and lowered‐formant stimuli that only differed in the formant frequencies, while keeping fundamental frequency and other acoustic characteristics constant. Infants in an infant‐controlled listening procedure listened longer to the raised‐formant than to the lowered‐formant stimuli. These results provide the first evidence that infants distinguish and show preferences for variations in formant frequencies in adult speech.     

Seeing a talking face matters: Infants' segmentation of continuous auditory-visual speech

Visual speech cues from a speaker's talking face aid speech segmentation in adults, but despite the importance of speech segmentation in language acquisition, little is known about the possible influence of visual speech on infants' speech segmentation. Here, to investigate whether there is facilitation of speech segmentation by visual information, two groups of English-learning 7-month-old infants were presented with continuous speech passages, one group with auditory-only (AO) speech and the other with auditory-visual (AV) speech. Additionally, the possible relation between infants' relative attention to the speaker's mouth versus eye regions and their segmentation performance was examined. Both the AO and the AV groups of infants successfully segmented words from the continuous speech stream, but segmentation performance persisted for longer for infants in the AV group. Interestingly, while AV group infants showed no significant relation between the relative amount of time spent fixating the speaker's mouth versus eyes and word segmentation, their attention to the mouth was greater than that of AO group infants, especially early in test trials. The results are discussed in relation to the possible pathways through which visual speech cues aid speech perception.     

Sing for me,Mama! Infants' discrimination of novel vowels in song

When adults speak or sing with infants, they sound differently than in adult communication. Infant-directed (ID) communication helps caregivers to regulate infants' emotions and helps infants to process speech information, at least from ID-speech. However, it is largely unclear whether infants might also process speech information presented in ID-singing. Therefore, we examined whether infants discriminate vowels in ID-singing, as well as potential differences with ID-speech. Using an alternating trial preference procedure, infants aged 4–6 and 8–10 months were tested on their discrimination of an unfamiliar non-native vowel contrast presented in ID-like speech and singing. Relying on models of early speech sound perception, we expected that infants in their first half year of life would discriminate the vowels, in contrast to older infants whose non-native sound perception should deteriorate, at least in ID-like speech. Our results showed that infants of both age groups were able to discriminate the vowels in ID-like singing, while only the younger group discriminated the vowels in ID-like speech. These results show that infants process speech sound information in song from early on. They also hint at diverging perceptual or attentional mechanisms guiding infants' sound processing in ID-speech versus ID-singing toward the end of the first year of life.     

Excitable Speech: Judith Butler, Mae West, and Sexual Innuendo

Working with Judith Butler's Excitable Speech: A Politics of the Performative, this essay pursues a series of questions on the performativity of speech acts, using sexual innuendo as an example. As performed by the provocative American playwright and classic Hollywood film star, Mae West, sexual innuendo provides an instance of “excitable speech” that allows for the exploration of speech as a site of political resistance. The questions that frame this discussion are as follows: How are vulnerability and agency produced in speech? What are the foreclosures or censors at work in producing speech and the speaking subject? What constitutes the “force” of the performative speech act? How is the speech act repeatable? And do these conditions leave room for Butler's notion of linguistic agency, where the speech act works to undermine linguistic conventions through resignification? Finally, the essay offers queer readings of Mae West in order to demonstrate the concept of “discursive performativity,” which underpins Butler's argument.     

Commercial speech,protected speech,and political public relations

Political public relations play an unique role in American democracy because it occupies a dual role of providing both political and commercial speech. However, using analysis of the First amendment, public relations have increasingly been identified as commercial speech which receives limited protection under the U.S. Constitution. This study traces the evolution of the legal framework in which political PR has become associated with commercial speech, and how this association has made Constitutional analysis of political PR more complex. Implications for public relations practitioners and PR's role in democracy are discussed.     

Reported Speech and Survivor Identity in On-Line Bone Marrow Transplantation Narratives

This paper investigates the language choices made by contributors to an electronic discussion list on bone marrow transplantation, called SupportBMT, and relates these to the construction of these contributors' identities as survivors rather than as victims of a life-threatening disease and/or of a life-threatening medical treatment. Specifically, it examines the use of 142 instances of reported speech within 61 narratives posted to SupportBMT that recount conflict within a past medical encounter. Analyses of the illocutionary acts of these instances of reported speech, as well as the alternation between direct and indirect reported speech in these narratives, portray the patient as a strong self-advocate and the physician as contributing to that positive image of the patient, either directly or indirectly. Findings suggest that survivors' use of reported speech within such narratives provides a socialization model for newcomers to the community of those with such illnesses.