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1.
Dev Sci ; 27(3): e13459, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-37987377

RESUMEN

We report the findings of a multi-language and multi-lab investigation of young infants' ability to discriminate lexical tones as a function of their native language, age and language experience, as well as of tone properties. Given the high prevalence of lexical tones across human languages, understanding lexical tone acquisition is fundamental for comprehensive theories of language learning. While there are some similarities between the developmental course of lexical tone perception and that of vowels and consonants, findings for lexical tones tend to vary greatly across different laboratories. To reconcile these differences and to assess the developmental trajectory of native and non-native perception of tone contrasts, this study employed a single experimental paradigm with the same two pairs of Cantonese tone contrasts (perceptually similar vs. distinct) across 13 laboratories in Asia-Pacific, Europe and North-America testing 5-, 10- and 17-month-old monolingual (tone, pitch-accent, non-tone) and bilingual (tone/non-tone, non-tone/non-tone) infants. Across the age range and language backgrounds, infants who were not exposed to Cantonese showed robust discrimination of the two non-native lexical tone contrasts. Contrary to this overall finding, the statistical model assessing native discrimination by Cantonese-learning infants failed to yield significant effects. These findings indicate that lexical tone sensitivity is maintained from 5 to 17 months in infants acquiring tone and non-tone languages, challenging the generalisability of the existing theoretical accounts of perceptual narrowing in the first months of life. RESEARCH HIGHLIGHTS: This is a multi-language and multi-lab investigation of young infants' ability to discriminate lexical tones. This study included data from 13 laboratories testing 5-, 10-, and 17-month-old monolingual (tone, pitch-accent, non-tone) and bilingual (tone/non-tone, non-tone/non-tone) infants. Overall, infants discriminated a perceptually similar and a distinct non-native tone contrast, although there was no evidence of a native tone-language advantage in discrimination. These results demonstrate maintenance of tone discrimination throughout development.


Asunto(s)
Percepción de la Altura Tonal , Percepción del Habla , Lactante , Humanos , Laboratorios , Fonética , Percepción del Timbre
2.
Environ Sci Technol ; 57(40): 15288-15297, 2023 10 10.
Artículo en Inglés | MEDLINE | ID: mdl-37747133

RESUMEN

C7 HFPO-TA is a newly identified alternative to PFOA, which possesses a unique structure fragment (CF3O-CF(CF3)-). In this study, we evaluated the chemical reactivity of C7 HFPO-TA in advanced oxidation and reduction processes for the first time, which revealed a series of unexpected transformation mechanisms. The results showed that reductive degradation based on hydrated electrons (eaq-) was more feasible for the degradation of C7 HFPO-TA. For oxidative degradation, the branched -CF3 at the α-position carbon posed as the spatial hindrance, shielding the attack of SO4•- to -COO-. The synergistic effects of HO•/eaq- and direct photolysis led to deeper defluorination and mineralization of C7 HFPO-TA in the vacuum UV/sulfite (VUV/SF) process. We identified a unique H/OCF3 exchange that converted the CF3O-CF(CF3)- into H-CF(CF3)- directly, and the SO3•- involved mechanism of C7 HFPO-TA for the first time. We revealed the branched -CF3 connected to the same carbon next to the CF3O- group affected the C-O bond cleavage site, preferring the H/OCF3 exchange pathway. The defluorination of C7 HFPO-TA was compared with PFOA and three PFECAs in the VUV/SF process, which was highly dependent on structures. Degradation kinetics, theoretical calculations, and products' analysis provided an in-depth perspective on the degradation mechanisms and pathways of C7 HFPO-TA.


Asunto(s)
Fluorocarburos , Contaminantes Químicos del Agua , Vacio , Oxidación-Reducción , Fluorocarburos/análisis , Sulfitos , Carbono , Contaminantes Químicos del Agua/análisis
3.
Environ Sci Technol ; 56(10): 6201-6211, 2022 05 17.
Artículo en Inglés | MEDLINE | ID: mdl-35107260

RESUMEN

Sodium p-perfluorous nonenoxybenzenesulfonate (OBS) is a novel fluorosurfactant used as the alternative to perfluorooctanesulfonic acid (PFOS) in several applications such as fire-fighting foams and chemical enhanced oil recovery ("EOR") in China, with the annual production capacity of about 3,500 t. Here, for the first time, we investigated the degradability of OBS under the conditions of UV/persulfate (UV/PS) and UV/sulfite (UV/SF) as typical redox processes. A higher reaction rate (1.05 min-1) and total organic carbon (TOC) reduction (46.9%) but a low defluorination rate (27.6%) along with the formation of a series of fluorinated intermediates were found in UV/PS, while a high defluorination rate (87.7%) was realized in UV/SF. In particular, a nontargeted workflow using high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (HPLC/Q-TOF-MS) was established to detect fluorinated intermediates. Combined with the theoretical calculation, the distinctive degradation pathways in both oxidation and reduction processes were proposed. The degradation mechanism of OBS in UV/SF was proposed to be H/F exchange and subsequent HF elimination. Furthermore, the diluted OBS-based fluoroprotein (FP) foam was used to investigate the degradation of OBS, which confirms the treatability using the redox approach. This work provides insights into the degradability of OBS, fluorinated intermediate search, and proper treatment of related contamination.


Asunto(s)
Contaminantes Químicos del Agua , Aerosoles , Cromatografía Líquida de Alta Presión , Oxidación-Reducción , Sodio , Sulfitos , Rayos Ultravioleta , Contaminantes Químicos del Agua/análisis
4.
Anal Chem ; 93(39): 13274-13283, 2021 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-34546716

RESUMEN

Gene mutations are important biomarkers for the diagnosis, classification, monitoring, and prognosis evaluation of cancers and genetic diseases. Both personalized cancer treatment and noninvasive prenatal testing require methods to accurately determine the abundance of mutation. At present, the widely adopted and convenient methods for measuring mutation abundance are mainly based on relative quantification, which requires negative samples and strict control of the analyte amounts. The development of DNA-probe-based methods that can determine the mutation abundance without negative samples nor control of analyte amount is highly preferred. The key to solving this bottleneck lies in whether the probe's response to mutation abundance can be completely independent of the number of targeted DNA strands. Herein, we propose the design of a self-internal-reference probe system. We established a theoretical model of this system and used the model to guide the design of probes. In this model, we provided quantitative corrections to the test results from the internal reference, thereby eliminating the influence of substrate amount. Therefore, the purification and quantification processes toward polymerase chain reaction (PCR) amplicons can be omitted. We applied this system to analyze unquantified PCR products aimed at cancer mutation detection and noninvasive prenatal testing.


Asunto(s)
Mutación
5.
Infancy ; 26(1): 4-38, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33306867

RESUMEN

Determining the meanings of words requires language learners to attend to what other people say. However, it behooves a young language learner to simultaneously encode relevant non-verbal cues, for example, by following the direction of their eye gaze. Sensitivity to cues such as eye gaze might be particularly important for bilingual infants, as they encounter less consistency between words and objects than monolingual infants, and do not always have access to the same word-learning heuristics (e.g., mutual exclusivity). In a preregistered study, we tested the hypothesis that bilingual experience would lead to a more pronounced ability to follow another's gaze. We used a gaze-following paradigm developed by Senju and Csibra (Current Biology, 18, 2008, 668) to test a total of 93 6- to 9-month-old and 229 12- to 15-month-old monolingual and bilingual infants, in 11 laboratories located in 8 countries. Monolingual and bilingual infants showed similar gaze-following abilities, and both groups showed age-related improvements in speed, accuracy, frequency, and duration of fixations to congruent objects. Unexpectedly, bilinguals tended to make more frequent fixations to on-screen objects, whether or not they were cued by the actor. These results suggest that gaze sensitivity is a fundamental aspect of development that is robust to variation in language exposure.


Asunto(s)
Desarrollo Infantil/fisiología , Movimientos Oculares/fisiología , Desarrollo del Lenguaje , Multilingüismo , Percepción Social , Percepción Visual/fisiología , Tecnología de Seguimiento Ocular , Femenino , Fijación Ocular/fisiología , Humanos , Lactante , Masculino
6.
Infancy ; 25(5): 593-617, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32857444

RESUMEN

In contrast to the anecdotal claim that "male infants like cars and female infants like dolls," previous studies have reported mixed findings for gender-related toy preferences in infancy. In Experiment 1, we explored the emergence of gender-related preferences using face-car pairs (Experiment 1a, n = 51, 6-20 months) or face-stove pairs (Experiment 1b, n = 54, 6-20 months). In Experiment 2 (n = 42, 14-16 months), we explore the effect of toy properties, infants' past toy exposure, activity levels, and parental attitudes on such preferences using a wider range of toys. For both studies, infants demonstrated a general preference for faced stimuli over other objects, except for male infants who showed no preference between dolls and cars at around 15 months. Infants' prior experience participating in motor-intensive activities, with wheeled toys and parental attitudes appeared to relate to female infants' preferences for dynamic toys. These results indicate a range of factors influence gendered toy preferences and suggest that nurture plays an important role.


Asunto(s)
Desarrollo Infantil/fisiología , Conducta de Elección/fisiología , Conducta del Lactante/fisiología , Responsabilidad Parental , Reconocimiento Visual de Modelos/fisiología , Factores de Edad , Actitud , Reconocimiento Facial/fisiología , Femenino , Humanos , Lactante , Masculino , Juego e Implementos de Juego , Factores Sexuales
7.
Can Psychol ; 61(4): 349-363, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34219905

RESUMEN

The field of infancy research faces a difficult challenge: some questions require samples that are simply too large for any one lab to recruit and test. ManyBabies aims to address this problem by forming large-scale collaborations on key theoretical questions in developmental science, while promoting the uptake of Open Science practices. Here, we look back on the first project completed under the ManyBabies umbrella - ManyBabies 1 - which tested the development of infant-directed speech preference. Our goal is to share the lessons learned over the course of the project and to articulate our vision for the role of large-scale collaborations in the field. First, we consider the decisions made in scaling up experimental research for a collaboration involving 100+ researchers and 70+ labs. Next, we discuss successes and challenges over the course of the project, including: protocol design and implementation, data analysis, organizational structures and collaborative workflows, securing funding, and encouraging broad participation in the project. Finally, we discuss the benefits we see both in ongoing ManyBabies projects and in future large-scale collaborations in general, with a particular eye towards developing best practices and increasing growth and diversity in infancy research and psychological science in general. Throughout the paper, we include first-hand narrative experiences, in order to illustrate the perspectives of researchers playing different roles within the project. While this project focused on the unique challenges of infant research, many of the insights we gained can be applied to large-scale collaborations across the broader field of psychology.

8.
Analyst ; 143(12): 2755-2759, 2018 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-29850719

RESUMEN

We have disclosed the unique inhibition effect of small molecule-protein interactions toward the DNA branch migration process and constructed a complete thermodynamic model for it. The disclosed effect was further coupled with the steric hindrance effect to establish a homogeneous assay for proteins and small molecules with ultra-high inhibition factors and sensitivity.


Asunto(s)
ADN/química , Mapeo de Interacción de Proteínas , Proteínas/química , Fenómenos Biofísicos , Termodinámica
9.
Environ Sci Technol ; 52(20): 11728-11734, 2018 10 16.
Artículo en Inglés | MEDLINE | ID: mdl-30207460

RESUMEN

Hexafluoropropylene oxide dimer acid (HFPO-DA, ammonium salt with trade name: GenX) has been recently detected in river water worldwide. There are significant concerns about its persistence, and potential adverse effects to the biota. In this study, the degradability of GenX by typical advanced redox technologies (UV/persulfate and UV/sulfate) is investigated. Results demonstrate that <5% GenX is oxidized after 3 h in UV/persulfate system, which is much lower than ∼27% for PFOA. In comparison, GenX can be readily degraded and defluorinated by hydrated electron (eaq-) generated by UV/sulfite system. Specifically, GenX is not detectable after 2 h, and >90% of fluoride ion is recovered 6 h later. This is attributed to the accumulation and subsequent degradation of CF3CF2COOH and CF3COOH, which are stable intermediates of GenX degradation. Mechanistic investigations suggest that the etheric bond in the molecule is a favorable attack point for the eaq-. Such finding is corroborated by quantum chemical calculations. The side CF3- at the α-carbon probably acts as an effective barrier that prevents GenX from being cleaved by SO4-• or OH• at its most sensible point (i.e. the carboxyl group). This study illustrates that reduction by UV/sulfite might be a promising technology to remove GenX from contaminated water.


Asunto(s)
Compuestos de Amonio , Contaminantes Químicos del Agua , Oxidación-Reducción , Sulfatos , Sulfitos
10.
Mikrochim Acta ; 185(9): 413, 2018 08 13.
Artículo en Inglés | MEDLINE | ID: mdl-30105500

RESUMEN

A star-shaped fluorescent DNA probe (S-probe) is described that can recognize target DNA and discriminate it from interfering DNA via strand displacement including branch migration and toehold exchange. The artificially designed S-probe does not harm the strand displacement while it allows the fluorescently labelled strand and the quencher-labelled strand to be shared among different S-probes targeting different genetic variations. Generally, multiplexed detection of different MT/WT pairs requires different fluorophore-labelled and quencher-labelled strands. The two labelled oligonucleotides of S-probe have sequences decoupled from the target/interfering DNA sequence, so the same fluorescent and quencher strands can be used for different S-probes that target different sequences. The sensitivity, specificity, and general applicability of the method toward BRCA 41293497 mutation, KRAS G13D mutation and two types of EGFR mutations (T790 M and L858R) were experimentally demonstrated. The limit of quantification of the MT concentration is 2 nM, and the detection limit of the low abundance of the target sequence is 5% (40 nM of MT strand in the background of 760 nM of WT strand). The fluorometric assay with excitation/emission wavelengths of 485/582 nm was successfully applied to clinical samples spiked with mutant-type and wild-type DNA. The unique structure of the S-probe provides a useful tool for the regulation of the strand displacement reaction. Conceivably, the star-shaped DNA probe can be widely adopted to multiplexed detection of genetic variations and provide novel insights into the regulation of strand displacement processes as utilized in DNA based nanomachines. Graphical abstract A star-shaped fluorescent DNA probe (S-probe) with a detection limit of 2 nM was adopted to multiplexed detection of genetic variations via strand displacement including branch migration and toehold exchange.


Asunto(s)
Sondas de ADN , ADN/análisis , ADN/genética , Colorantes Fluorescentes , Variación Genética , Recolección de Muestras de Sangre , Sondas de ADN/química , Femenino , Fluorometría/métodos , Humanos , Límite de Detección , Mutación , Neoplasias Ováricas/genética
11.
J Exp Child Psychol ; 164: 192-208, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28687119

RESUMEN

Although statistical learning has been shown to be a domain-general mechanism, its constraints, such as its interactions with perceptual development, are less well understood and discussed. This study is among the first to investigate the distributional learning of lexical pitch in non-tone-language-learning infants, exploring its interaction with language-specific perceptual attunement during the first 2years after birth. A total of 88 normally developing Dutch infants of 5, 11, and 14months were tested via a distributional learning paradigm and were familiarized on a unimodal or bimodal distribution of high-level versus high-falling tones in Mandarin Chinese. After familiarization, they were tested on a tonal contrast that shared equal distributional information in either modality. At 5months, infants in both conditions discriminated the contrast, whereas 11-month-olds showed discrimination only in the bimodal condition. By 14months, infants failed to discriminate the contrast in either condition. Results indicate interplay between infants' long-term linguistic experience throughout development and short-term distributional learning during the experiment, and they suggest that the influence of tonal distributional learning varies along the perceptual attunement trajectory, such that opportunities for distributional learning effects appear to be constrained in the beginning and at the end of perceptual attunement. The current study contributes to previous research by demonstrating an effect of age on learning from distributional cues.


Asunto(s)
Desarrollo del Lenguaje , Fonética , Percepción del Habla , Señales (Psicología) , Femenino , Humanos , Lactante , Masculino
12.
Cogn Process ; 18(1): 55-65, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27817073

RESUMEN

This study explores the influence of bilingualism on the cognitive processing of language and music. Specifically, we investigate how infants learning a non-tone language perceive linguistic and musical pitch and how bilingualism affects cross-domain pitch perception. Dutch monolingual and bilingual infants of 8-9 months participated in the study. All infants had Dutch as one of the first languages. The other first languages, varying among bilingual families, were not tone or pitch accent languages. In two experiments, infants were tested on the discrimination of a lexical (N = 42) or a violin (N = 48) pitch contrast via a visual habituation paradigm. The two contrasts shared identical pitch contours but differed in timbre. Non-tone language learning infants did not discriminate the lexical contrast regardless of their ambient language environment. When perceiving the violin contrast, bilingual but not monolingual infants demonstrated robust discrimination. We attribute bilingual infants' heightened sensitivity in the musical domain to the enhanced acoustic sensitivity stemming from a bilingual environment. The distinct perceptual patterns between language and music and the influence of acoustic salience on perception suggest processing diversion and association in the first year of life. Results indicate that the perception of music may entail both shared neural network with language processing, and unique neural network that is distinct from other cognitive functions.


Asunto(s)
Desarrollo Infantil/fisiología , Discriminación en Psicología/fisiología , Multilingüismo , Música , Percepción de la Altura Tonal/fisiología , Percepción del Habla/fisiología , Habituación Psicofisiológica/fisiología , Humanos , Lactante
13.
Brain Sci ; 13(5)2023 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-37239282

RESUMEN

The music and spoken language domains share acoustic properties such as fundamental frequency (f0, perceived as pitch), duration, resonance frequencies, and intensity. In speech, the acoustic properties form an essential part in differentiating between consonants, vowels, and lexical tones. This study investigated whether there is any advantage of musicality in the perception and production of Thai speech sounds. Two groups of English-speaking adults-one comprising formally trained musicians and the other non-musicians-were tested for their perception and production of Thai consonants, vowels, and tones. For both groups, the perception and production accuracy scores were higher for vowels than consonants and tones, and in production, there was also better accuracy for tones than consonants. Between the groups, musicians (defined as having more than five years of formal musical training) outperformed non-musicians (defined as having less than two years of formal musical training) in both the perception and production of all three sound types. Additional experiential factors that positively influenced the accuracy rates were the current hours of practice per week and those with some indication of an augmentation due to musical aptitude, but only in perception. These results suggest that music training, defined as formal training for more than five years, and musical training, expressed in hours of weekly practice, facilitate the perception and production of non-native speech sounds.

14.
Brain Lang ; 242: 105279, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37236016

RESUMEN

Though perceptual narrowing has been widely recognized as a process guiding cognitive development and category learning in infancy and early childhood, its neural mechanisms and traits at a cortical level remain unclear. Using an electroencephalography (EEG) abstract mismatch negativity (MMN) paradigm, Australian infants' neural sensitivity to (native) English and (non-native) Nuu-Chah-Nulth speech contrasts was examined in a cross-sectional design at the onset (5-6 months) and offset (11-12 months) of perceptual narrowing. Immature mismatch responses (MMR) were observed among younger infants for both contrasts, while older infants showed MMR response to the non-native contrast, and both MMR and MMN to the native contrast. Sensitivity to the Nuu-Chah-Nulth contrast at perceptual narrowing offset was retained yet stayed immature. Findings conform to perceptual assimilation theories, reflecting plasticity in early speech perception and development. Compared to behavioural paradigms, neural examination effectively reveals experience-induced processing differences to subtle contrasts at the offset of perceptual narrowing.


Asunto(s)
Percepción del Habla , Habla , Humanos , Lactante , Preescolar , Desarrollo del Lenguaje , Estudios Transversales , Australia , Electroencefalografía , Percepción del Habla/fisiología
15.
Chemosphere ; 337: 139419, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37419156

RESUMEN

Fluorinated chrome mist suppressants (CMSs) have been widely used in the electroplating industry globally, including China. In compliance with the Stockholm Convention on Persistent Organic Pollutants, China has phased out perfluorooctane sulfonate (PFOS) as CMS, except for closed-loop systems, before March 2019. Since then, several alternatives have been introduced to replace PFOS, but many of them still belong to the per- and polyfluoroalkyl substances (PFASs) family. In this study, for the first time, we collected and analyzed CMS samples from the Chinese market in 2013, 2015, and 2021 to determine their PFAS composition. For products with relatively few PFAS targets, we performed a total fluorine (TF) screening test and suspect and non-target analysis. Our findings suggest that 6:2 fluorotelomer sulfonate (6:2 FTS) has become the primary alternative on the Chinese market. Surprisingly, we identified 8:2 chlorinated polyfluorinated ether sulfonate (8:2 Cl-PFAES) as the primary ingredient in a CMS product (F-115B), which is the longer chain modification of the classical CMS product (F-53B). Furthermore, we identified three novel PFASs as PFOS alternatives, including hydrogen-substituted perfluoroalkyl sulfonates (H-PFSAs) and perfluorinated ether sulfonates (O-PFSAs). We also screened and identified six hydrocarbon surfactants in PFAS-free products as the primary ingredients. Despite this, some PFOS-based CMSs remain on the Chinese market. To prevent the opportunistic use of PFOS for illegal purposes, it is essential to enforce regulations strictly and ensure that such CMSs are used only in closed-loop chrome plating systems.


Asunto(s)
Ácidos Alcanesulfónicos , Fluorocarburos , Ácidos Alcanesulfónicos/análisis , Fluorocarburos/análisis , Alcanosulfonatos/análisis , Éter , Éteres , China
16.
iScience ; 26(10): 107781, 2023 Oct 20.
Artículo en Inglés | MEDLINE | ID: mdl-37731620

RESUMEN

Large irradiation surface solar simulator often has the problem of low irradiation uniformity. Therefore, a method for designing a large irradiation surface solar simulator with high irradiation uniformity is proposed. According to the law of conservation of energy and the edge-ray principle of non-imaging optics, the free-form surface concentrator is designed and optimized by using the simulated annealing algorithm based on Bessel curve to improve the incident beam uniformity of the integrator. The optical integrator and projection system are also designed and optimized to eliminate aberrations, improve light efficiency, and enlarge the irradiation area. The design is verified using LightTools software and achieves an effective irradiation size of Φ1200 mm with an irradiance of a solar constant and an irradiation uniformity of less than 2.0%. This study provides accurate and reliable solar irradiation for laboratory calibration and performance testing of spacecraft payloads.

17.
Behav Sci (Basel) ; 13(8)2023 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-37622791

RESUMEN

Anorexia nervosa (AN) is a mental health disorder that has serious physical, emotional and social consequences. Whilst cognitive behavioural therapy for AN (CBT-AN) has demonstrated efficacy, there remains a global need to improve AN treatment. Compulsive exercise activity therapy (LEAP) is an active therapy consisting of the addition to CBT-AN of eight specific sessions that focus on exercise and motivation for behavioural change. This paper presents a secondary analysis of 74 female participants in a randomised control trial of LEAP plus CBT-AN versus CBT-AN alone. The main aim of this study was to explore putative predictors and to estimate the magnitude of changes due to LEAP for specific outcome measures. Participants (LEAP: n = 36; CBT-AN: n = 38) were assessed at three successive surveys: baseline, end of therapy, and 6 months post-therapy. The overall effect sizes for changes between baseline to end of therapy and baseline to 6-month follow-up assessment showed large effect sizes (Cohen's d > = 0.80) for mental-health-related quality of life (MHRQoL), weight concern, dietary restraint, eating concern, AN stage change, and psychological distress (all p < 0.05). The results also indicated that several pre-treatment characteristics, including body mass index (BMI), level of eating disorder (ED) symptoms, and MHRQoL are important for identifying whether a treatment is likely to be effective. Future treatment programs should aim to optimise early improvements in BMI, ED symptoms, and MHRQoL.

18.
Artículo en Inglés | MEDLINE | ID: mdl-37174208

RESUMEN

Mindfulness is a multi-faceted construct that involves paying attention to thoughts and emotions without automatically reacting and being critical of them. Recent research has suggested that mindfulness might play an important role in reducing problematic alcohol use. Further, Readiness to Change (RTC) is related to motivation to change drinking behaviours. The RTC scale identifies motivation to change drinking behaviours including Precontemplation, Contemplation, and Action stages. The current study investigated, for the first time, the relationship between mindfulness (and its facets) and RTC in relation to drinking behaviours. Undergraduate students from Western Sydney University (N = 279) were screened for drinking levels using the Alcohol Use Disorder Identification Test (AUDIT) and then completed the Readiness to Change Questionnaire (RCT) and the Five Facets Mindfulness Questionnaire (FFMQ), which includes the following facets: Acting with Awareness, Non-Judging of Inner Experience, Non-Reactivity to Inner Experience, Describing, and Observing. Results show that overall, mindfulness and its facets negatively correlated with RTC. Multiple regression analysis further showed that Awareness and Non-Judgement facets negatively predicted RTC. These findings provide insight into how the facets of mindfulness interact with the drinking motives of individuals and their intentions to change drinking behaviours. Based on these findings, we recommend the incorporation of mindfulness techniques in interventions targeting problematic drinking.


Asunto(s)
Atención Plena , Humanos , Atención Plena/métodos , Motivación , Intención , Encuestas y Cuestionarios , Consumo de Bebidas Alcohólicas/psicología
19.
Front Psychol ; 13: 906848, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35719494

RESUMEN

Fundamental frequency (ƒ 0), perceived as pitch, is the first and arguably most salient auditory component humans are exposed to since the beginning of life. It carries multiple linguistic (e.g., word meaning) and paralinguistic (e.g., speakers' emotion) functions in speech and communication. The mappings between these functions and ƒ 0 features vary within a language and differ cross-linguistically. For instance, a rising pitch can be perceived as a question in English but a lexical tone in Mandarin. Such variations mean that infants must learn the specific mappings based on their respective linguistic and social environments. To date, canonical theoretical frameworks and most empirical studies do not view or consider the multi-functionality of ƒ 0, but typically focus on individual functions. More importantly, despite the eventual mastery of ƒ 0 in communication, it is unclear how infants learn to decompose and recognize these overlapping functions carried by ƒ 0. In this paper, we review the symbioses and synergies of the lexical, intonational, and emotional functions that can be carried by ƒ 0 and are being acquired throughout infancy. On the basis of our review, we put forward the Learnability Hypothesis that infants decompose and acquire multiple ƒ 0 functions through native/environmental experiences. Under this hypothesis, we propose representative cases such as the synergy scenario, where infants use visual cues to disambiguate and decompose the different ƒ 0 functions. Further, viable ways to test the scenarios derived from this hypothesis are suggested across auditory and visual modalities. Discovering how infants learn to master the diverse functions carried by ƒ 0 can increase our understanding of linguistic systems, auditory processing and communication functions.

20.
Environ Int ; 167: 107398, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35841727

RESUMEN

Massive usage of aqueous film-forming foams (AFFF) containing fluorocarbon surfactants (FS) is one of the major sources of per- and polyfluoroalkyl substances (PFAS) contamination, which poses negative environmental and health effects. However, there is a critical knowledge gap regarding PFAS chemical compositions in high consumption FS products which were used in AFFFs on the Chinese market and in water impacted by such products. This study firstly applied a comprehensive suspect screening and nontargeted analysis (NTA) workflow to investigate the main ionic and neutral PFAS in FS products from the largest Chinese vendor and compared with two international brands to unveil the PFAS used in AFFF. Overall, 24 classes of PFAS, including 69 compounds, were tentatively identified in FS products, and high concentrations of neutral PFAS were found in polymer-based products, indicating potential environmental risk. In addition, we applied a simplified data mining process to capture 36 PFAS from the impacted water, and the relationship among FS, AFFF concentrates and impacted water was explored. This study parsed the PFAS characteristics in AFFF-related industrial products and impacted water in China, which is instrumental for managing and controlling prioritized PFAS in this field.


Asunto(s)
Fluorocarburos , Contaminantes Químicos del Agua , China , Fluorocarburos/análisis , Tensoactivos/análisis , Agua/química , Contaminantes Químicos del Agua/análisis
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