Lexical skills and gesture use: A comparison between expressive and receptive/expressive late talkers.

BACKGROUND: Studies on late talkers (LTs) highlighted their heterogeneity and the relevance of describing different communicative profiles. AIMS: To examine lexical skills and gesture use in expressive (E-LTs) vs. receptive-expressive (R/E-LTs) LTs through a structured task. METHODS AND PROCEDURES: Forty-six 30-month-old screened LTs were distinguished into E-LTs (n= 35) and R/E-LTs (n= 11) according to their receptive skills. Lexical skills and gesture use were assessed with a Picture Naming Game by coding answer accuracy (correct, incorrect, no response), modality of expression (spoken, spoken-gestural, gestural), type of gestures (deictic, representational), and spoken-gestural answers' semantic relationship (complementary, equivalent, supplementary). OUTCOMES AND RESULTS: R/E-LTs showed lower scores than E-LTs for noun and predicate comprehension with fewer correct answers, and production with fewer correct and incorrect answers, and more no responses. R/E-LTs also exhibited lower scores in spoken answers, representational gestures, and equivalent spoken-gestural answers for noun production and in all spoken and gestural answers for predicate production. CONCLUSIONS AND IMPLICATIONS: Findings highlighted more impaired receptive and expressive lexical skills and lower gesture use in R/E-LTs compared to E-LTs, underlying the relevance of assessing both lexical and gestural skills through a structured task, besides parental questionnaires and developmental scales, to describe LTs' communicative profiles.

Describing communication profiles of low-risk preterm and full-term late talkers.

INTRODUCTION: Late talkers represent a heterogeneous population. We aimed to describe communication profiles of low-risk preterm and full-term late talkers according to their receptive and expressive vocabulary size, considering communicative, linguistic, cognitive, and motor skills, as well as biological and environmental risk factors. METHODS: Sixty-eight late talkers (33 born low-risk preterm and 35 full-term) were identified through a language screening at 30 months. Parents filled out the Italian Short Forms of the MacArthur Bates Communicative Development Inventories and the Socio Conversational Skills Rating Scales. Children were assessed with the Picture Naming Game test and the Bayley Scales of Infant and Toddler Development. RESULTS: A two-step cluster analysis identified three distinct profiles among late talkers according to their receptive and expressive vocabulary size. Severe late talkers (25%) showed less frequent use of pointing, limited verbal imitation, receptive vocabulary size, lexical and sentence production, responsiveness and assertiveness, and lower cognitive scores than mild late talkers (40%). Moderate late talkers (35%) showed less frequent verbal imitation, limited lexical and sentence production and lower cognitive scores than mild late talkers. Male gender was significantly more represented in the severe late profile, whereas other biological and environmental factors did not differ among the three profiles. CONCLUSIONS: Findings highlighted the relevance of assessing communicative, lexical, grammar, pragmatic, and cognitive skills to describe late talkers' profiles. A deeper investigation of phonological skills might also contribute to a further understanding of interindividual variability in this population.

Mindful Parenting Intervention MinUTo App for Parents of Preschool Children: Study Protocol of a Randomised Controlled Trial.

BACKGROUND: Mindful parenting and the use of technology for parenting intervention have expanded separately from one another with promising results, but their relationship is underexplored. The current study protocol proposes a new universal intervention via app, MINd Us TOghether (MinUTo), based on mindful parenting for parents of typically developing children of 4-5 years of age. METHODS: The effect of the intervention is evaluated using a randomised controlled trial. Around 2000 parents are enrolled and randomised to the intervention and control groups. Data are collected in three different waves from parents at baseline and endline; APP usage data allow for the analysis of intervention adherence. The MinUTo app proposes contents and activities for five dimensions of mindful parenting. Each dimension is presented within a two-week distance, explaining its importance, providing information, and offering activities for parents and children. EXPECTED RESULTS: We hypothesise a positive effect of the intervention on primary outcomes (mindful parenting, parenting stress, parent behaviours and parental time investment), increasing parents' skills and promoting a positive parent-child relationship. We also test possible effects on secondary outcomes (parenting attitudes and beliefs) at an explorative level. CONCLUSIONS: The study will add new considerations about the psychological and economic impact of technologies in implementing parenting interventions in non-clinical populations.

Integrating Gestures and Words to Communicate in Full-Term and Low-Risk Preterm Late Talkers.

Young children use gestures to practice communicative functions that foster their receptive and expressive linguistic skills. Studies investigating the use of gestures by late talkers are limited. This study aimed to investigate the use of gestures and gesture-word combinations and their associations with word comprehension and word and sentence production in late talkers. A further purpose was to examine whether a set of individual and environmental factors accounted for interindividual differences in late talkers' gesture and gesture-word production. Sixty-one late talkers, including 35 full-term and 26 low-risk preterm children, participated in the study. Parents filled out the Italian short forms of the MacArthur-Bates Communicative Development Inventories (MB-CDI), "Gesture and Words" and "Words and Sentences" when their children were 30-months-old, and they were then invited to participate in a book-sharing session with their child. Children's gestures and words produced during the book-sharing session were transcribed and coded into CHAT of CHILDES and analyzed with CLAN. Types of spontaneous gestures (pointing and representational gestures) and gesture-word combinations (complementary, equivalent, and supplementary) were coded. Measures of word tokens and MLU were also computed. Correlational analyses documented that children's use of gesture-word combinations, particularly complementary and supplementary forms, in the book-sharing session was positively associated with linguistic skills both observed during the session (word tokens and MLU) and reported by parents (word comprehension, word production, and sentence production at the MB-CDI). Concerning individual factors, male gender was negatively associated with gesture and gesture-word use, as well as with MB-CDI action/gesture production. In contrast, having a low-risk preterm condition and being later-born were positively associated with the use of gestures and pointing gestures, and having a family history of language and/or learning disorders was positively associated with the use of representational gestures. Furthermore, a low-risk preterm status and a higher cognitive score were positively associated with gesture-word combinations, particularly complementary and supplementary types. With regard to environmental factors, older parental age was negatively associated with late talkers' use of gestures and pointing gestures. Interindividual differences in late talkers' gesture and gesture-word production were thus related to several intertwined individual and environmental factors. Among late talkers, use of gestures and gesture-word combinations represents a point of strength promoting receptive and expressive language acquisition.

Semantic Contingency of Maternal Verbal Input Directed at Very Preterm and Full-Term Children.

Several studies have testified to the importance of a responsive linguistic input for children's language acquisition and development. In particular, maternal use of expansions, imitations, interpretations, and labels has been shown to promote both children's language comprehension and production. From this perspective, the present study examined the semantically contingent linguistic input addressed to very preterm children's comparing it to that directed to full-term children observed during a semi-structured play session when the children were 24 months of age. The relationships between maternal contingent utterances and children's communicative repertoires were also investigated. The main results showed that mothers of full-term children produced a higher proportion of semantically contingent utterances than those of very preterm children; moreover, this variable was associated with children's more advanced communicative-linguistic outcomes. Overall, this study supports the interdependence between mothers' use of certain linguistic strategies and children's communicative-linguistic repertoire, extending this evidence to children born very preterm and suggesting the importance of considering the semantic contingency aspect of child-directed speech to support the communicative and linguistic development of these children.

Singing to infants matters: Early singing interactions affect musical preferences and facilitate vocabulary building.

This research revealed that the frequency of reported parent-infant singing interactions predicted 6-month-old infants' performance in laboratory music experiments and mediated their language development in the second year. At 6 months, infants (n = 36) were tested using a preferential listening procedure assessing their sustained attention to instrumental and sung versions of the same novel tunes whilst the parents completed an ad-hoc questionnaire assessing home musical interactions with their infants. Language development was assessed with a follow-up when the infants were 14-month-old (n = 26). The main results showed that 6-month-olds preferred listening to sung rather than instrumental melodies, and that self-reported high levels of parental singing with their infants [i] were associated with less pronounced preference for the sung over the instrumental version of the tunes at 6 months, and [ii] predicted significant advantages on the language outcomes in the second year. The results are interpreted in relation to conceptions of developmental plasticity.

The Effects of a Parent-Implemented Language Intervention on Late-Talkers' Expressive Skills: The Mediational Role of Parental Speech Contingency and Dialogic Reading Abilities.

Several qualitative and quantitative features of parental speech input support children's language development and may play a critical role in improving such process in late talkers. Parent-implemented interventions targeting late-talkers have been developed to promote children's language outcomes by enhancing their linguistic environment, i.e., parental speech input. This study investigated the effect of a parent-implemented intervention in increasing late talkers' expressive skills through modifications in structural and functional features of parental speech input. Forty-six thirty-one-month-old late talkers differing in their birth condition (either low-risk preterm or full-term) participated in the study with a parent; 24 parent-child dyads received a parent-implemented intervention centered on dialogic reading and focused stimulation techniques, whereas the other 22 dyads constituted the control group. At pre- and post-intervention, dyads took part in a parent-child shared book-reading session and both parental and child's speech measures were collected and examined. Results showed that the intervention positively affected parents' use of responses and expansions of children's verbal initiatives, as well as the parental amount of talking over reading, whereas no structural features of parental input resulted modified. Mediation analyses pointed out that the intervention indirectly enhanced late-talkers' use of verbal types and tokens through changes in parental use of expansions and amount of talking over reading. As birth status was entered as a covariate in the analysis, these findings can be extended to children with different gestational age. We conclude that the parent-implemented intervention was effective in supporting late-talkers' gains in language development as a cascade result of the improvements in parental contingency and dialogic reading abilities. These promising findings suggest to examine not only children and parental outcomes but also the intervention mechanisms promoting changes in late-talkers' language development as a clearer view on such process can inform the development of feasible, ecological and effective programs.

Mind-mindedness and parenting stress in mothers of preterm and full-term infants: The moderating role of perceived social support.

The goal of this study was to examine the effects of preterm birth and maternal childbirth-related posttraumatic stress and parenting stress on maternal mind-mindedness (MM). The study also investigated the effects of perceived social support on parenting stress and MM. Sixty-five preterm (N = 32) and full-term (N = 33) mother-infant dyads were observed at 6 months. Measures of maternal MM were obtained from observations of mother-infant interaction. Mothers also provided ratings of their posttraumatic stress disorder (PTSD) symptoms, parenting stress, and perceived social support via an online survey. Experiencing a preterm birth did not affect mothers' use of mental state descriptors during mother-infant interaction. Neither childbirth-related posttraumatic stress nor parenting stress directly affected maternal ability to comment on the child's mental states appropriately. However, at medium and high levels of perceived social support, a negative association between parenting stress and MM was observed. Maternal perception of being emotionally supported by significant others promoted MM in mothers showing low or mild levels of parenting stress, but not in mothers experiencing high stress in parenting their infants. Results suggest that a proclivity to MM might be affected by the interaction between parenting stress and social support, rather than by childbirth-related variables, such as prematurity.

El propósito de este estudio fue examinar los efectos del nacimiento prematuro y el estrés materno postraumático relacionado con dar a luz, y el estrés de la crianza sobre la disposición de la mente (MM). El estudio también investigó los efectos que la percepción del apoyo social tiene en el estrés de la crianza y la disposición de la mente. Se observaron 65 díadas de madre-infantes prematuros (N = 32) y de gestación completa (N = 33) a los 6 meses. Las medidas de la disposición mental materna se obtuvieron de observaciones de la interacción madre-infante. Las madres también suministraron los puntajes de sus síntomas de PTSD, el estrés de la crianza y la percepción del apoyo social por medio de una encuesta electrónica. El experimentar un nacimiento prematuro no afectó el uso por parte de las madres de los factores de descripción del estado mental durante la interacción madre-infante. Ni el estrés postraumático relacionado con el dar a luz ni el estrés de la crianza directamente afectaron la habilidad materna para comentar de manera apropiada sobre los estados mentales del niño. Sin embargo, al nivel medio y alto de la percepción de apoyo social, se observó una asociación negativa entre el estrés de crianza y la disposición de la mente. La percepción materna de contar con el apoyo emocional de su pareja promovió la disposición mental de las madres que mostraban bajos o leves niveles de estrés de crianza, aunque no así en aquellas madres que experimentaban un nivel alto de estrés en la crianza de sus infantes. Los resultados sugieren que una propensión a la disposición mental pudiera ser afectada por la interacción entre el estrés de crianza y el apoyo social, en vez de las variables relacionadas con el dar a luz, tal como el nacimiento prematuro.

Le but de cette étude était d'examiner les effets du stress posttraumatique lié à la naissance avant terme et à l'accouchement maternel et le stress de parentage sur l'Etat d'esprit/Orientation mentale (abrégé ici EE/OM). L'étude s'est aussi penchée sur les effets du soutien social perçu du stress de parentage et de l'EE/OM maternel. Soixante-cinq dyades mères-bébés nés avant terme (N = 32) et à plein terme (N = 33) ont été observées à 6 mois. Les mesures d'EE/FM maternel ont été obtenues d'observations de l'interaction mère-bébé. Les mères ont aussi offert des évaluations de leurs propres symptômes ESPT, du stress de parentage, et du soutien social perçu au travers d'un questionnaire en ligne. Le fait d'avoir fait l'expérience d'une naissance avant terme n'a pas affecté l'utilisation de descripteurs de santé mentale des mères durant l'interaction mère-bébé. Ni le stress posttraumatique lié à l'accouchement ni le stress de parentage n'ont affecté directement la capacité maternelle à commenter les états mentaux de l'enfant de manière appropriée. Cependant, à des niveaux moyens et élevés de soutien social perçu, une association négative entre le stress de parentage et l'EE/OM a été observée. La perception maternelle d'être soutenue émotionnellement par leurs partenaires a promu l'EE/FM chez les mères faisant preuve de niveaux bas ou peu élevés de stress de parentage, mais pas chez les mères faisant preuve de stress élevé dans le parentage de leurs bébés. Les résultats suggèrent qu'une tendance à l'EE/OM peut être affectée par l'interaction entre le stress de parentage et le soutien social, plutôt que par des variables liées à l'accouchement, comme la prématurité.

A Parent-Implemented Language Intervention for Late Talkers: An Exploratory Study on Low-Risk Preterm and Full-Term Children.

Parent-implemented language interventions have been used for children with expressive language delays, but no study has yet been carried out using this intervention for low-risk preterm children. The current study examined the effect of a parent-implemented dialogic book reading intervention, determining also whether the intervention differently impacted low-risk preterm and full-term children. Fifty 31-month-old late talkers with their parents participated; 27 late talkers constituted the intervention group, and 23 constituted the control group. The overall results indicated that more children in the intervention group showed partial or full recovery of their lexical expressive delay and acquired the ability to produce complete sentences relative to the control group. Concerning full-term late talkers, those in the intervention group showed a higher daily growth rate of total words, nouns, function words, and complete sentences, and more children began to produce complete sentences relative to those in the control group. Concerning low-risk preterm late talkers, children in the intervention group increased their ability to produce complete sentences more than those in the control group. We conclude that a parent-focused intervention may be an effective, ecological, and cost-effective program for improving expressive lexical and syntactic skills of full-term and low-risk preterm late talkers, calling for further studies in late talkers with biological vulnerabilities.

Speech and Language Skills of Low-Risk Preterm and Full-Term Late Talkers: The Role of Child Factors and Parent Input.

Among children in the third year of life, late talkers comprise from 9% to 20%. This range seems to increase when addressing preterm children. This study examined video-recorded child spontaneous speech during parent-child book sharing as well as linguistic skills reported through the MacArthur Bates Communicative Development Inventories (MB-CDI) Short Form in 61 late talkers aged 30 months old (26 low-risk preterm, 8 females; 35 full-term, 12 females). Differences between low-risk preterm and full-term late talkers in child language measures and parental speech input were tested, as were the roles of child and parent factors on child language. Low-risk preterm and full-term late talkers showed similar speech and language skills. Similarly, no differences were found in measures of parental speech between groups. Child cognitive score, chronological age, and low-risk preterm status were positively associated with lexical diversity, rate, and composition of child speech production, whereas family history for language and/or learning disorders as well as parent measures of lexical diversity, rate, and grammatical complexity were negatively associated with the above child variables. In addition, child cognitive score and low-risk preterm status were positively associated with the MB-CDI measures of word and sentence production. Findings are discussed in terms of the need of good practices when following up on low-risk preterm children and of interventions targeting parents' input to preterm and full-term late talkers.

Mind-Mindedness and Parenting Stress: A Cross-Sectional Study in a Cohort of Mothers of 3-Month-Old Full-Term and Preterm Infants.

The preterm birth of a child is a sudden event that can disturb the overall family system and its functioning. Many studies have been conducted with the aim of exploring how and the degree to which this event affects the early mother-infant dyadic relationship and maternal well-being, with often mixed findings. The present study investigates the combined effect of preterm birth and parenting stress on mind-mindedness, a parenting dimension that captures how parents represent and treat their children as separate individuals with their own mental states and activities. A hundred and ten mothers and their three-month-old infants (preterm = 54; full-term = 56) participated in the study. Mind-mindedness was assessed by coding mothers' comments about infant's mental states during dyadic face-to-face interaction. Parenting stress was evaluated with the Parenting Stress Index Short Form questionnaire. Mothers of preterm infants reported similar levels of appropriate and non-attuned mind-related comments to mothers of full-term infants. The reported parenting stress levels were also comparable. Interestingly, only mothers of preterm infants who reported higher stress in parenting showed more non-attuned comments during the interaction. The results underline the need to address preterm birth as a complex event, going beyond group differences and considering its interplay with other risk or protective factors in shaping children's and parents' adjustments and well-being.

Vocal and gestural productions of 24-month-old children with sex chromosome trisomies.

BACKGROUND: Children with sex chromosome trisomies (SCT) frequently show problems in language development. However, a clear description of the communicative patterns of these children is still lacking. AIMS: To describe the first stages of language development in children with SCT in comparison with those in typically developing (TD) children. The purpose was to verify the existence of possible differences in communicative skills (in both vocal and gestural modality) and identify the presence of possible early predictors (i.e., low vocabulary size and low gesture production) of later language impairment in children with SCT. METHODS & PROCEDURES: Fifteen 24-month-old children with SCT (eight males with Klinefelter syndrome (KS) and seven females with triple X syndrome (TX)) and fifteen 24-month-old TD children (eight males and seven females) participated in the study. Their spontaneous communicative productions were assessed during a semi-structured play session in interaction with a parent. In addition, their vocabulary size was assessed using a parental report (the Italian version of the MacArthur Communicative Development Inventories). OUTCOMES & RESULTS: With regards to their vocabulary size, 60% of children with SCT (75% of children with KS and 43% of children with TX) were at risk for language impairments (i.e., they had a vocabulary size smaller than 50 words). In addition, TD children showed better lexical and syntactic skills than children with SCT in their spontaneous communicative productions. However, the production of communicative gestures was higher in children with SCT than in TD children. Boys with KS appeared to differ from TD males in more aspects of communication than girls with TX differed from TD females. CONCLUSIONS & IMPLICATIONS: The study showed the importance of early detection of language risk factors in children with SCT, while also considering the use of compensatory strategies (e.g., the use of communicative gestures).

Ambivalent stereotypes link to peace, conflict, and inequality across 38 nations.

A cross-national study, 49 samples in 38 nations (n = 4,344), investigates whether national peace and conflict reflect ambivalent warmth and competence stereotypes: High-conflict societies (Pakistan) may need clearcut, unambivalent group images distinguishing friends from foes. Highly peaceful countries (Denmark) also may need less ambivalence because most groups occupy the shared national identity, with only a few outcasts. Finally, nations with intermediate conflict (United States) may need ambivalence to justify more complex intergroup-system stability. Using the Global Peace Index to measure conflict, a curvilinear (quadratic) relationship between ambivalence and conflict highlights how both extremely peaceful and extremely conflictual countries display lower stereotype ambivalence, whereas countries intermediate on peace-conflict present higher ambivalence. These data also replicated a linear inequality-ambivalence relationship.

Individual differences in components of impulsivity and effortful control moderate the relation between borderline personality disorder traits and emotion recognition in a sample of university students.

Dysfunctions in social cognition characterize personality disorders. However, mixed results emerged from literature on emotion processing. Borderline Personality Disorder (BPD) traits are either associated with enhanced emotion recognition, impairments, or equal functioning compared to controls. These apparent contradictions might result from the complexity of emotion recognition tasks used and from individual differences in impulsivity and effortful control. We conducted a study in a sample of undergraduate students (n=80), assessing BPD traits, using an emotion recognition task that requires the processing of only visual information or both visual and acoustic information. We also measured individual differences in impulsivity and effortful control. Results demonstrated the moderating role of some components of impulsivity and effortful control on the capability of BPD traits in predicting anger and happiness recognition. We organized the discussion around the interaction between different components of regulatory functioning and task complexity for a better understanding of emotion recognition in BPD samples.

Can you hear what I feel? A validated prosodic set of angry, happy, and neutral Italian pseudowords.

This contribution aims to establish a set of validated vocal Italian pseudowords that convey three emotional tones (angry, happy, and neutral) for prosodic emotional processing research. We elaborated the materials by following a series of specific steps. First, we tested the valence of a set of written pseudowords generated by specific software. Two Italian actors (male and female) then recorded the resulting subset of linguistically legal and neutral pseudowords in three emotional tones. Finally, on the basis of the results of independent ratings of emotional intensity, we selected a set of 30 audio stimuli expressed in each of the three different emotions. Acoustic analyses indicated that the prosodic indexes of fundamental frequency, vocal intensity, and speech rate anchored individual perceptions of the emotions expressed. Finally, the acoustic profile of the set of emotional stimuli confirmed previous findings. The happy tone stimuli showed high f0 values, high intensity, high pitch variability, and a faster speech rate. The angry tone stimuli were also characterized by high f0 and intensity, but by relatively smaller pitch variability and a lower speech rate. This last profile echoes the description of "cold anger." This new set of prosodic emotion stimuli will constitute a useful resource for future research that requires emotional prosody materials. It could be used both for Italian and for cross-language studies.

Prosodic skills in children with Down syndrome and in typically developing children.

BACKGROUND: Many studies have analysed language development in children with Down syndrome to understand better the nature of their linguistic delays and the reason why these delays, particularly those in the morphosyntactic area, seem greater than their cognitive impairment. However, the prosodic characteristics of language development in children with Down syndrome have been scarcely investigated. AIMS: To analyse the prosodic skills of children with Down syndrome in the production of multi-word utterances. Data on the prosodic skills of these children were compared with data on typically developing children matched on developmental age and vocabulary size. Between-group differences and the relationships between prosodic and syntactic skills were investigated. METHODS & PROCEDURES: The participants were nine children with Down syndrome (who ranged in chronological age from 45 to 63 months and had a mean developmental age of 30 months) and 12 30-month-old typically developing children. The children in both groups had a vocabulary size of approximately 450 words. The children's spontaneous productions were recorded during observations of mother-child play sessions. OUTCOMES & RESULTS: Data analyses showed that despite their morphosyntactic difficulties, children with Down syndrome were able to master some aspects of prosody in multi-word utterances. They were able to produce single intonation multi-word utterances on the same level as typically developing children. In addition, the intonation contour of their utterances was not negatively influenced by syntactic complexity, contrary to what occurred in typically developing children, although it has to be considered that the utterances produced by children with Down syndrome were less complex than those produced by children in the control group. However, children with Down syndrome appeared to be less able than typically developing children to use intonation to express the pragmatic interrogative function. CONCLUSIONS & IMPLICATIONS: The findings are discussed considering the effects of social experience on the utterance prosodic realization.

Gestural development and its relation to language acquisition in very preterm children.

This longitudinal study examined the development of communicative gesture in 16 preterm children and two groups of full term children at 12, 18 and 24 months of age. Children's spontaneous communicative gestures were analyzed during mother-child observation sessions. Preterm children's motor, mental and linguistic development were also measured. The development of gestural communication did not significantly differ between the groups except for the use of gesture-plus-word combinations at 18 and 24 months, when full term children produced significantly more combinations than preterm children. For preterm children, the production of pointing at 12 months was positively associated with lexical skills at 24 months as was the use of gestures-plus-word utterances at 18 months with morphosyntactic skills at 24 months. Our analyses also revealed a subgroup of preterm children characterized by a low birth-weight and mental scores who demonstrated an enduring increase in communicative gesture production over time. This profile could be associated with later delays in language acquisition.

Maternal speech to preterm infants during the first 2 years of life: stability and change.

BACKGROUND: Studies on typical language development documented that mothers fine-tune their verbal input to children's advancing skills and development. Although premature birth has often been associated with delays in communicative and language development, studies investigating maternal language addressed to these children are still rare. AIMS: The principal aim of this longitudinal study was to investigate the maternal speech directed at very preterm children by examining its changes across time and the stability of maternal individual styles. METHODS & PROCEDURES: A sample of 16 mother-preterm infant dyads participated in semi-structured play sessions when children were 6, 12, 18 and 24 months of corrected age. Maternal speech directed at the children was analysed in terms of lexical and syntactical complexity as well as verbal productivity. Also children's motor, cognitive and communicative skills were assessed. OUTCOMES & RESULTS: Results highlight an overall increase in the lexical and syntactical complexity and in the amount of maternal speech across the first years of life. At the same time, individual maternal communicative styles seem stable as infants grow older, even if between 12 and 18 months all the indices' predictive values decrease, indicating a noteworthy modification in individual maternal styles. Furthermore, between 12 and 18 months predictive relationships between children's motor and vocal skills and maternal changes in input were found. CONCLUSIONS & IMPLICATIONS: Verbal input addressed to children born preterm during the first 2 years of life does not seem to differ considerably from the language usually used with full-term infants. Nevertheless, maternal verbal adjustments seem to be predicted by earlier infant achievements in vocal and motor development. This suggests that infants' motor skill maturation may function as a major signal for mothers of preterm babies to adjust aspects of their linguistic interactive style.

Characteristics of phonological development as a risk factor for language development in Italian-speaking pre-term children: A longitudinal study.

This study analysed the early linguistic development of Italian pre-term children. Samples of spontaneous pre-linguistic and verbal production were recorded at 12 and 18 months of age from two groups of children: 24 pre-term children and 15 full-term children. The Italian version of the MacArthur-Bates Questionnaire was administered at 24 months of age. Comparisons between these two groups reveal differences in many aspects of phonetic and phonological development, such as consonantal inventory at 12 and 18 months of age and syllabic babbling complexity at 18 months of age. Results evidenced that birth weight was related with phonological skills exhibited at 18 months of age, and these skills in turn are related with vocabulary size at 24 months of age. Data are discussed within a theoretical framework that hypothesizes that early phonetic abilities have long-lasting effects on the process of language acquisition.