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1.
J Adolesc ; 87: 52-62, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33482497

RESUMO

INTRODUCTION: The present study examined the longitudinal relations between maternal psychological control and emotion regulation in Chinese adolescents. Specifically, we examined how emotion regulation was reciprocally associated with multiple dimensions of psychological control, including love withdrawal, guilt induction, and shaming in the Chinese cultural context. METHODS: Participants consisted of 865 Chinese students from fourth through eighth grade (50.8% girls; Mage = 11.82 years at Wave 1, SDage = 1.28 at Wave 1, range = 10-15 years). Data were collected at two time-periods over a one-year period. Children reported on their emotion regulation. Mothers rated their engagement in love withdrawal, guilt induction, and shaming. RESULTS: Cross-lagged panel analyses revealed an adequate model fit. Children's emotion regulation at study onset predicted decreases in all three dimensions of maternal psychological control one year later, whereas the three dimensions of maternal psychological control did not significantly predict emotion regulation one year later. CONCLUSIONS: Findings revealed the longitudinal associations among child emotion regulation and maternal psychological control within a specific cultural context. Implications for the meaning of psychological control parenting in Chinese culture are discussed.

2.
Carbohydr Polym ; 253: 117197, 2021 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-33278971

RESUMO

Phomopsis liquidambari is a classical endophytic fungus with great application potential in ecology and agriculture; however, studies on its exopolysaccharides are lacking. Here, we aimed to evaluate the structure and bioactivity of PLN-1, an exopolysaccharide derived from the P. liquidambari NJUSTb1 strain. The structure was elucidated by chromatography/spectral methods and hydrolyzation. Immunomodulation, moisture absorption, and retention properties were investigated after sulfation and carboxymethylation modification. Results showed that PLN-1 contained a linear repeating unit of →[4)-α-d-Glcp-(1→6)-α-d-Glcp-(1→4)-α-d-Glcp-(1→4)-α-d-Glcp-(1→]n, with a molecular weight of 343 kDa. The degrees of substitution of sulfated polysaccharide (S-PLN-1) and carboxymethylated polysaccharide (C-PLN-1) were 1.228 and 0.903, respectively. S-PLN-1 showed stronger moisture absorption and retention properties than PLN (crude EPS), C-PLN1, and PLN-1. Furthermore, PLN, S-PLN-1, and C-PLN-1 stimulated the proliferation of RAW 264.7 cells with no cytotoxicity. The elucidation of PLN-1 in this study paves the way for future applications.

3.
Food Res Int ; 138(Pt B): 109811, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33288186

RESUMO

Osteoporosis is a worldwide epidemic, and certain functional foods can alleviate osteoporosis with great efficiency. Here, in a dexamethasone-induced osteoporosis rat model, it was proved that APS could restore the bone mineral density (BMD) and repair the impairment of bone microarchitecture, two major features of osteoporosis. In APS-treated rats, acid phosphatase 5 (ACP5) and pro-inflammatory cytokines (TNF-α and IL-2) were significantly decreased. This suggested that APS might improve osteoporosis by inhibiting osteoclastogenesis and preventing inflammation. Further analysis on the bacterial community revealed that the structure of gut microbiota was dramatically changed by APS, and 13 bacteria (such as c_Bacteroidia, p_Bacteroidetes, and g_Allpprevotella) could serve as biomarkers for APS-improved osteoporosis. Furthermore, five genera (uncultured_bacterium_f_Ruminococcaceae, Alloprevotella, Ruminococcaceae_UCG-014, Blautia and Lactobacillus) were inferred as the key bacteria in APS-improved osteoporosis. In conclusion, APS-modified gut microbiota and the potential key bacteria to alleviate osteoporosis, as well as its relationship with improved osteoporosis, were investigated in our present study. Our results will help to understand how APS improves osteoporosis by regulating gut microbiota and contribute to the development and application of functional foods to alleviate refractory osteoporosis by regulating targeted intestinal bacteria.

4.
J Agric Food Chem ; 68(52): 15449-15459, 2020 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-33320666

RESUMO

DNA methylation is an epigenetic event that plays critical roles in the pathogenesis, progression, and treatment of human diseases. In this study, we investigated the epigenetic mechanisms for Astragalus polysaccharide (APS)-improved osteoporosis in a rat model. The results showed that APS significantly changed the DNA methylome in colonic epithelia with great efficiency. Gene set enrichment analysis (GSEA) based on differentially methylated sites (DMSs) revealed that APS caused promoter DNA methylation changes of genes associated with calcium homeostasis, osteoclast/osteoblast balance, Wnt signaling, and hormone-related processes. Further analysis showed high consistency of APS-induced gene methylomic changes in colonic epithelia and its effects on diabetes, virus infection, and wound healing, which had been reported already. Moreover, we suggested new functions and the involved mechanisms of APS in heart disease, neurological disorder, reproductive problem, and olfactory dysfunction. In this study, we offered epigenetic mechanisms for APS-improved osteoporosis. More importantly, we proposed and proved a reliable method to explore the beneficial effects of bioactive polysaccharides by studying DNA methylation changes at nonfocal sites. We firmly believed the promising prospects of this method for its great efficiency, rapidness, and economy in exploring possible beneficial or therapeutic effects of functional macromolecules with one single experiment.

5.
J Agric Food Chem ; 68(49): 14531-14539, 2020 Dec 09.
Artigo em Inglês | MEDLINE | ID: mdl-33226212

RESUMO

Rheumatoid arthritis (RA) causes swollen joints and irreversible joint damage and may even elevate cancer risks. Several bioactive nonstarch polysaccharides (NSPs) were reported to alleviate RA, but the key colonic genes accountable for this alleviation were elusive. Using collagen-induced arthritis as an RA model, colonic candidate genes related to RA were selected by transcriptome and methylome. The key genes were determined by comparing the transcriptome, methylome, and quantitative reverse transcription polymerase chain reaction profiles in RA rats with and without Lycium barbarum polysaccharides' treatment and further validated using Angelica sinensis polysaccharides and Astragalus propinquus polysaccharides for comparison. Both colonic genes γ-glutamyltransferase 7 (Ggt7) and angiotensin-I-converting enzyme (Ace) were downregulated by RA, and they were upregulated after L. barbarum polysaccharides' and A. sinensis polysaccharides' intervention that reduced the RA-caused hypermethylation status in nucleotide sites in the exon/promoter region of the two genes. However, the A. propinquus polysaccharides' intervention barely reduced the hypermethylation in the corresponding sites, failing to recover the expressions of these two genes and improve RA. Therefore, the colonic Ggt7 and Ace can be considered as key genes accountable for RA alleviation by bioactive NSP intervention. This study provides a more comprehensive insight into diet intervention to improve RA.

6.
J Agric Food Chem ; 68(45): 12661-12670, 2020 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-33119288

RESUMO

Chronic nonbacterial prostatitis (CNP) is a common male disease with high incidence and low cure rate. This study aims to investigate the anti-CNP potential of Poria cocos polysaccharides (PPs) in a λ-carrageenan-induced CNP rat model. Results showed that PPs exerted anti-CNP functions by reducing the prostate weight and prostate index as well as the level of C-reactive protein (CRP) and pro-inflammatory cytokines (TNF-α and IL-1ß). Further analysis on sex hormones revealed that PPs could favor CNP alleviation by regulating the production of testosterone (T), dihydrotestosterone (DTH), and estradiol (E2). PPs could also alleviate CNP by regulating the level of inducible nitric oxide synthase (iNOS), malonaldehyde (MDA), and superoxide diamutase (SOD) in inflamed prostate, thereby enhancing the anti-oxidative stress activity. As most non-digestive polysaccharides are fermented by gut microbiota rather than being digested directly by the host, we further analyzed PP-induced changes in gut microbiota. Microbiomic analysis revealed that PPs significantly change the profile of gut microbiota. Moreover, the relative abundance of five genera was recovered by PPs with a dose-effect relationship, thereby being suggested to play critical roles in the alleviation of CNP. Epigenomic (methylomic) analysis showed that PPs remodeled the DNA methylome of intestinal epithelia, by which PPs might modify hormone production. In the present study, we reported the anti-CNP activity of PPs as well as the involved mechanisms.

7.
Medicine (Baltimore) ; 99(43): e22667, 2020 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-33120758

RESUMO

BACKGROUND: Total knee arthroplasty is accompanied by moderate to severe postoperative pain. Postoperative pain hampers the functional recovery and lowers patient satisfaction with the surgery. Recently, the adductor canal block (ACB) has been widely used in total knee arthroplasty. However, there is no definite answer as to the location of a continuous block within the ACBs. METHOD: Randomized controlled trials about relevant studies were searched in PubMed (1996 to Oct 2019), Embase (1996 to Oct 2019), and Cochrane Library (CENTRAL, Oct 2019). RESULTS: Five studies involving 348 patients met the inclusion criteria. Pooled data indicated that the proximal ACB was as effective as the distal ACB in terms of total opioid consumption (P = .54), average visual analog scale (VAS) score (P = .35), worst VAS score (P = .19), block success rate (P = .86), and time of catheter insertion (P = .54). CONCLUSIONS: Compared with the distal ACB, the proximal ACB showed similar analgesic efficacy for total opioid consumption, average VAS score, worst VAS score, block success rate, and time of catheter insertion. However, because of the limited number of involved studies, more high-quality studies are needed to further identify the optimal location of the ACB.


Assuntos
Artroplastia do Joelho/métodos , Bloqueio Nervoso/métodos , Manejo da Dor/métodos , Dor Pós-Operatória/prevenção & controle , Idoso , Analgésicos Opioides/administração & dosagem , Feminino , Nervo Femoral , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor , Ensaios Clínicos Controlados Aleatórios como Assunto
8.
J Adolesc Health ; 2020 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-33121902

RESUMO

PURPOSE: Adolescents are particularly vulnerable during the COVID-19 quarantine periods and may be at risk for developing psychological distress symptoms that extend beyond a crisis, including depression. This study examined adolescents' postquarantine depressive symptoms associated with pandemic stressors. The primary aim was to identify potential protective factors that may buffer the association between the presence of COVID-19 cases in adolescents' communities and their postquarantine depressive symptoms. METHODS: Adolescents from public schools were recruited from Zhengzhou city, Henan, China (N = 1,487, Mage=13.14 years, 50% girls). Adolescents reported the presence of confirmed or suspected COVID-19 cases in their communities, their daily activities and routines during the 2-month quarantine period, and depressive symptoms after the quarantine period. RESULTS: The presence of cases in adolescents' communities during the quarantine contributed to more depressive symptoms in adolescents after the quarantine. This association was buffered by adolescents' spending more time on physical activities and better maintenance of daily living routines during the quarantine period. The presence of community infection was also more strongly associated with depressive symptoms in older adolescents. CONCLUSIONS: The presence of COVID-19 cases in communities contributed to adolescents' poorer mental health, and the association was stronger for older adolescents. Spending time on physical activities and maintaining daily living routines during the quarantine appear to be practical strategies that can be used by adolescents to mitigate the association between pandemic stressors and their diminishing mental health.

9.
R Soc Open Sci ; 7(9): 200705, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33047032

RESUMO

On 8 April 2020, the Chinese government lifted the lockdown and opened up public transportation in Wuhan, China, the epicentre of the COVID-19 pandemic. After 76 days in lockdown, Wuhan residents were allowed to travel outside of the city and go back to work. Yet, given that there is still no vaccine for the virus, this leaves many doubting whether life will indeed go back to normal. The aim of this research was to track longitudinal changes in motivation for self-isolating, life-structured, indicators of well-being and mental health after lockdown was lifted. We have recruited 462 participants in Wuhan, China, prior to lockdown lift between 3 and 7 April 2020 (Time 1), and have followed up with 292 returning participants between 18 and 22 April 2020 (Time 2), 284 between 6 and 10 May 2020 (Time 3), and 279 between 25 and 29 May 2020 (Time 4). This four-wave study used latent growth models to examine how Wuhan residents' psychological experiences change (if at all) within the first two months after lockdown was lifted. The Stage 1 manuscript associated with this submission received in-principle acceptance (IPA) on 2 June 2020. Following IPA, the accepted Stage 1 version of the manuscript was preregistered on the OSF at https://osf.io/g2t3b. This preregistration was performed prior to data analysis. Generally, our study found that: (i) a majority of people still continue to value self-isolation after lockdown was lifted; (ii) by the end of lockdown, people perceived gradual return to normality and restored structure of everyday life; (iii) the psychological well-being slightly improved after lockdown was lifted; (iv) people who used problem solving and help-seeking as coping strategies during lockdown had better well-being and mental health by the end of the lockdown; (v) those who experienced more disruptions in daily life during lockdown would display more indicators of psychological ill-being by the end of the lockdown.

11.
Nutrients ; 12(6)2020 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-32486242

RESUMO

Previously, we showed the preventive effects of Lactobacillus plantarum ZS2058 (ZS2058) on Salmonella infection in murine models. In this work, we found that eugenol has a selective antibacterial effect, which inhibited Salmonella more than probiotics ZS2058 in vitro. It suggested a synergistic effect of them beyond their individual anti-Salmonella activity. We verified the conjecture in murine models. The results showed that the combination of ZS2058 and eugenol (CLPZE) significantly increased (p = 0.026) the survival rate of Salmonella-infected mice from 60% to 80% and the effect of CLPZE on preventing Salmonella-infection was 2-fold that of ZS2058 alone and 6-fold that of eugenol alone. CLPZE had a synergistic effect on inhibiting ST growth (the coefficient drug interaction ((CDI) = 0.829), reducing its invasiveness (CDI = 0.373) and downregulating virulence genes' expression in vitro. CLPZE helped the host form a healthier gut ecosystem. CLPZE also elicited a stronger and earlier immune response to systemic infection. In conclusion, these obtained results suggest that ZS2058 and eugenol have a synergistic effect on preventing Salmonella infection and open new perspectives in the strategies of controlling the prevalence of Salmonella by combination of probiotics and functional food components.

12.
J Adolesc ; 79: 184-192, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31978837

RESUMO

INTRODUCTION: Victims of peer victimization are likely to develop psychological adjustment difficulties. The primary goal of the present study was to examine the moderating effects of conflict resolution strategies (solution-orientation, control, nonconfrontation) on the relations between peer victimization and psychological problems (depressive symptoms, loneliness) in Chinese early adolescents using a cross-sectional design. METHODS: Participants included 569 children (298 boys) in fifth grade (M = 11.75 years, SD = 0.40) in urban China. Peer victimization, conflict resolution strategies, depressive symptoms, and loneliness were measured through self-report questionnaires. RESULTS: Peer victimization was positively related to depressive symptoms and loneliness. The relations between peer victimization and psychological problems were moderated by adolescents' solution-oriented and nonconfrontational strategies. Specifically, the relations between peer victimization and psychological problems, including depressive symptoms and loneliness, were attenuated by solution-orientation strategy. In addition, victimized youth who used nonconfrontation strategy were more prone to suffer from loneliness. Gender was also found to moderate these associations. CONCLUSIONS: The findings suggest that solution-oriented conflict resolution strategy may protect victimized adolescents from developing loneliness and depressive symptoms and nonconfrontation conflict strategy may exacerbate feelings of loneliness of victimized adolescents. Intervention programs should consider helping victimized youth use more solution-oriented strategies and less nonconfrontational strategies.

13.
Int J Psychol ; 55(2): 154-162, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30697696

RESUMO

This 1-year longitudinal study examined relations between maternal power-assertive parenting and children's social, academic and psychological adjustment in China. Participants were 316 elementary school children (mean age = 11 years, 153 boys). Maternal power-assertive parenting was assessed using children's self-reports. Data on children's social and school adjustment were obtained from peer evaluations and teacher ratings. In addition, children completed measures of loneliness and depression. Cross-lagged analyses indicated that whereas maternal power-assertive parenting was only related to later academic adjustment, children's adjustment in socioemotional and academic domains contributed to the prediction of later maternal power-assertive parenting. The results were discussed in the Chinese context.


Assuntos
Relações Mãe-Filho/psicologia , Poder Familiar/psicologia , Ajustamento Social , Grupo com Ancestrais do Continente Asiático , Criança , Feminino , Humanos , Estudos Longitudinais , Masculino
14.
J Abnorm Child Psychol ; 48(2): 289-300, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31486999

RESUMO

The present study examined the relations of shyness and unsociability with indexes of adjustment in migrant and non-migrant Chinese children. Participants were migrant (n = 413) and non-migrant students (n = 513) in fourth to seventh grades (M age = 11.4 years) in urban China. Data on shyness, unsociability, and adjustment were collected from multiple sources, including peer evaluations, teacher ratings, self-reports, and school records. The results showed that shyness was associated with social and school adjustment problems more evidently in non-migrant children than in migrant children, whereas unsociability was associated with social adjustment problems more evidently in migrant children than in non-migrant children. The results indicate that the functional meanings of children's social behaviors may differ across contexts.

15.
J Agric Food Chem ; 68(1): 128-137, 2020 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-31825613

RESUMO

Salmonellosis is a world-wide epidemic, and n-3 long chain polyunsaturated fatty acids (LCPUFAs) possess various health benefits. This study is aimed to investigate the preventive effects of n-3 LCPUFAs against Salmonella infection. By pretreatment with n-3 LCPUFAs, but not n-6 LCPUFAs, the survival rate of the infected mice was increased. Further studies showed that n-3 LCPUFAs significantly increased the fecal contents of short-chain fatty acids (SCFAs). The cytokine expression in the liver and production in serum were both modulated by n-3 LCPUFAs into an anti-inflammatory profile against infection. Moreover, the changes in gut microbiota by n-3 LCPUFAs favored the host against pathogens, closely related to the modified SCFA production and immune responses. In conclusion, n-3 LCPUFAs prevented Salmonella infection through multiple mechanisms, especially by the interaction with gut microbiota and host immunology. Our results suggested great perspectives for n-3 LCPUFAs and their related products to control the prevalence of Salmonella, a most predominant food-borne pathogen.


Assuntos
Suplementos Nutricionais/análise , Ácidos Graxos Ômega-3/administração & dosagem , Infecções por Salmonella/prevenção & controle , Animais , Bactérias/classificação , Bactérias/genética , Bactérias/isolamento & purificação , Bactérias/metabolismo , Modelos Animais de Doenças , Ácidos Graxos Voláteis/metabolismo , Feminino , Microbioma Gastrointestinal/efeitos dos fármacos , Humanos , Camundongos , Camundongos Endogâmicos C57BL , Salmonella/efeitos dos fármacos , Salmonella/fisiologia , Infecções por Salmonella/microbiologia
16.
Medicine (Baltimore) ; 98(50): e18356, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31852139

RESUMO

BACKGROUND: Total knee arthroplasty (TKA) is accompanied by moderate to severe postoperative pain. Multimodal analgesia, such as femoral nerve block, periarticular infiltration analgesia (PIA), and patient-controlled intravenous analgesia, have been used for postoperative analgesia. Recently, randomized controlled trials have compared the efficacy of the adductor canal block (ACB) and the PIA in patients undergoing TKA. However, there is no definite answer as to the efficacy and safety of the ACB compared with the PIA. METHOD: Randomized controlled trials about relevant studies were searched from PubMed (1996 to May 2019), Embase (1980 to May 2019), and Cochrane Library (CENTRAL, May 2019). Five studies which compared the ACB with the PIA methods were included in our meta-analysis. RESULTS: Five studies containing 413 patients met the inclusion criteria. There were no significant differences between the ACB and the PIA group in visual analog scale (VAS) score at rest (P = .14) and movement (P = .18), quadriceps muscle strength (P = .95), complications (P = .78), length of stay (LOS) (P = .54), and time up and go (TUG) test (P = .09), While patients in the ACB group had less equivalent morphine consumption (P < .05) compared with the PIA group. CONCLUSIONS: Our pooled data indicated the ACB group reduced the equivalent morphine consumption compared with the PIA group, with no statistically significant differences in the VAS score, quadriceps muscle strength, TUG test, complications, and LOS.


Assuntos
Analgesia/métodos , Artroplastia do Joelho/efeitos adversos , Bloqueio Nervoso/métodos , Manejo da Dor/métodos , Dor Pós-Operatória/tratamento farmacológico , Anestesia por Condução/métodos , Feminino , Humanos , Articulação do Joelho/cirurgia , Masculino , Pessoa de Meia-Idade , Força Muscular/efeitos dos fármacos , Dor Pós-Operatória/etiologia , Músculo Quadríceps/efeitos dos fármacos , Ensaios Clínicos Controlados Aleatórios como Assunto , Coxa da Perna , Resultado do Tratamento
17.
J Adolesc ; 76: 109-119, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31476689

RESUMO

INTRODUCTION: This study examined three different types of Chinese children and adolescents' perceptions of psychologically controlling parenting (love withdrawal, guilt induction, and shaming), their cognitive appraisals of such parenting, and their depressive symptoms. Specifically, the moderating role of children's cognitive appraisal on the association between each type of psychologically controlling parenting and children's depressive symptoms was assessed. Child age and gender effects were also explored. METHODS: Children (n = 992, Mage = 10.23 years) and adolescents (n = 427, Mage = 13.56 years) in Shanghai, China, reported on their parents' engagement in love withdrawal, guilt induction, and shaming practices, their appraisals of how much they thought their parents engaged in each of these parenting practices for their (the children's) own good, and depressive symptoms. RESULTS: Moderated multiple regressions revealed that parental love withdrawal, guilt induction, and shaming were associated with more depressive symptoms, which were buffered by children's positive interpretations. Moreover, the moderating effects of positive parenting interpretations were stronger for adolescents than for younger children, but no gender differences in the moderation effects were found. CONCLUSIONS: Overall, our findings revealed the critical role of child cognitive appraisals in the effects of parenting practices on child outcomes and highlighted the importance of examining the meaning and function of different dimensions of psychological control within a specific cultural context. Important developmental differences in the role of these cognitive appraisals and the effects of specific parenting practices were also identified.


Assuntos
Cognição , Depressão/psicologia , Poder Familiar/psicologia , Adolescente , Criança , China , Estudos Transversais , Feminino , Humanos , Masculino , Relações Pais-Filho
18.
Front Microbiol ; 10: 299, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30842764

RESUMO

Pathogen-induced infectious diseases pose great threats to public health. Accordingly, many studies have investigated effective strategies targeting pathogenic infections. We previously reported the preventive effects of Lactobacillus plantarum ZS2058 (ZS2058) and L. rhamnosus GG (LGG) against Salmonella spp. in a murine model. Here, we compared the mechanisms underlying the preventive effects of these Lactobacillus strains in vivo. Notably, reduced C-reactive protein levels were observed with both ZS2058 and LGG, which suggests abrogated anti-infection and inflammatory responses. ZS2058 more efficiently reduced the pathogenicity of Salmonella by increasing the level of propionic acid in feces and production of mucin 2 in the mouse colon and activity through the interleukin (IL)-23/IL-22 and IL-23/IL-17 pathways. Meanwhile, LGG more strongly alleviated gut inflammation, as indicated by changes in the levels of tissue necrosis factor (TNF)-α, IL-10 and myeloperoxidase (MPO) in infected mice. Moreover, both ZS2058 and LGG restored the levels of interferon (INF)-γ, a cytokine suppressed by Salmonella, albeit through different pathways. Our results demonstrate that ZS2058 and LGG prevent Salmonella infection via different mechanisms.

19.
J Sch Psychol ; 72: 14-28, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30819459

RESUMO

The purpose of this study was to examine school adjustment of rural-to-urban migrant children and its relations with acculturation in China. Migrant children were those whose official hukou status was in a rural region outside the city. Data were collected for 1175 students (M age = 11 years) in urban public schools from multiple sources including peer evaluations, teacher ratings, self-reports, and school records. The results showed that migrant students performed more competently than urban non-migrant students in social and academic areas. Migrant students displayed better psychological adjustment than non-migrant students in higher grades, but not in lower grades. Among migrant students, those with higher scores on accommodation to urban culture and maintenance of rural culture tended to be better adjusted. These results indicate the implications of migration and change in life circumstances for children's school functioning in social, academic, and psychological domains.


Assuntos
População Rural , Instituições Acadêmicas , Ajustamento Social , Migrantes/psicologia , População Urbana , Criança , China , Feminino , Humanos , Masculino
20.
J Abnorm Child Psychol ; 47(7): 1197-1209, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-30637554

RESUMO

This study examined trajectories of shyness-sensitivity and the contributions of peer relationships to these trajectories in Chinese children. Participants were 1061 school-age children (537 boys), initially in fifth grade (Mage = 11 years), in China. Longitudinal data on shyness-sensitivity were collected from peer assessments once a year for four years. In addition, peer nomination data on peer acceptance-rejection and mutual friendship were collected in the initial study. Four distinct shyness-sensitivity trajectories were identified: Low-Stable, Low-Increasing, Moderate-Decreasing, and High-Stable. Children with high peer acceptance scores were more likely to be in the High-Stable and Moderate-Decreasing trajectories than in the Low-Stable and Low-Increasing trajectories. The analysis of predictors of the within-trajectory growth rate indicated that children who were more liked by peers increased their shyness-sensitivity more slowly within the Low-Increasing trajectory and that children with mutual friendship involvement decreased their shyness-sensitivity more slowly within the Moderate-Decreasing trajectory. The results suggested that positive relationships might serve to attenuate developmental changes of shyness-sensitivity within these trajectories. The results were discussed in the Chinese context.


Assuntos
Desenvolvimento do Adolescente/classificação , Desenvolvimento Infantil/classificação , Relações Interpessoais , Grupo Associado , Timidez , Adolescente , Criança , China , Feminino , Humanos , Estudos Longitudinais , Masculino
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