Relationship between parenting stress and behavioral and emotional problems in preschool children: A mediation effect analysis

BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional problems.METHODS We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September 2023.The children and their parents were evaluated using a questionnaire survey.Pearson's correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating effect.RESULTS The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all P<0.05).The intermediary effect value between the family upbringing of parents in parental stress and children's behavior problems was 29.89%.CONCLUSION Parental family upbringing has a mediating effect between parental stress and behavioral and emotional problems of children.Despite paying attention to the behavioral and emotional problems of preschool-age children,clinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children.

The Association between Problematic Internet Use,Resilience,and Fatigue in First-Year Medical College Students in China:A Moderated Mediation Model

Background:Resilience is crucial for medical college students to thrive in the highly stressful environment of medical education.However,the prevalence of problematic internet use(PIU)in this population may negatively impact their resilience.This study investigated the influence of problematic online gaming(PG)and problematic social media use(PSMU)on the resilience of medical college students in China.Methods:A sample of 5075 first-year medical college students from four Chinese universities was studied.PG served as the independent variable,resilience as the dependent variable,fatigue as the mediator,and PSMU as the moderator.Structural equation modeling was conducted using LISREL 8.80.Additionally,a moderated mediation model was evaluated using the jAMM module in jamovi 2.6.13.Results:The study’s findings revealed significant negative correlations between resilience and the variables of PG,PSMU,and fatigue.Fatigue mediated the relationship between PG and resilience(B=−0.04,95%CI=[−0.05,−0.03]).PSMU moderated the direct relationship between PG and resilience with the interaction term PG×PSMU significant(B=−0.004,t=−6.501,p<0.001)and the first stage(PG→fatigue)of the mediation with PG×PSMU significant(B=0.055,t=8.351,p<0.001).The detrimental effects of PG on resilience were more pronounced among individuals with lower levels of PSMU.Conclusion:This study concluded that addressing PIU,particularly PG,is essential for fostering resilience in medical college students.While PSMU itself is maladaptive,the underlying social media engagement may serve a protective role through social support in mitigating the adverse effects of PG on resilience.

Associations between Rejective Parenting Style and Academic Anxiety among Chinese High School Students:The Chain Mediation Effect of Self-Concept and Positive Coping Style

Background:The phenomenon of academic anxiety has been demonstrated to exert a considerable influence on students’academic engagement,leading to the emergence of a phenomenon known as“learned helplessness”and undermining the selfconfidence and motivation of high school students.Using acceptance-rejection theory,this study elucidated how a rejective parenting style affects Chinese high school students’academic anxiety and explored the urban-rural heterogeneity of this relationship.Methods:Data were analyzed using a stratified whole-cluster random sampling method.There are a total of 30,000 high school students in the three regions of northern and central China(from Shanxi,Hebei and Henan).A sample of 2286 high school students aged 14–19 years was ultimately selected from 2760 respondents for this investigation,which was conducted at the beginning of the 2023 school year.Pearson correlation,ordinary least squares(OLS)regression analysis,path analysis,and Fisher’s permutation test(FPT)were used to examine the effects of rejective parenting style on high school students’academic anxiety.Results:Results indicated a significant positive predictive effect between rejective parenting style and academic anxiety among high school students(β=0.815,t=116.211,p<0.001).Students’self-concept was significantly positively related to positive coping style(β=0.424,t=21.208,p<0.001)and chain-mediated this relationship.Therefore,this parenting style may indirectly mitigate academic anxiety through these mediators.The study also found that the effect of rejective parenting style on academic anxiety varied by students’residential background and was more pronounced in urban areas(0.226)than in rural areas(0.130).Conclusion:The research underscores the imperative for Chinese families to reexamine their utilization of rejection parenting and to prioritize the cultivation of students’intrinsic attributes.These findings offer a theoretical framework and practical evidence for policymakers and educators to develop efficacious and targeted interventions.In particular,greater attention should be directed towards the discrepancies in the manifestation of emotional and academic anxiety between urban and rural students,and prompt guidance should be furnished.

Dysfunctional attitudes,social support,negative life events,and depressive symptoms in Chinese adolescents:A moderated mediation model

BACKGROUND Depression is a prevalent psychological issue in adolescents that is significantly related to negative life events(NLEs)and dysfunctional attitudes.High levels of social support can significantly buffer NLEs’effect on depression.Currently,there is limited research on how social support moderates the relationship between NLEs,dysfunctional attitudes,and depression in adolescents in China.It is imperative to investigate this moderating effect to mitigate dysfunctional attitudes in adolescent undergoing depressive mood,ultimately enhancing their overall mental health.AIM To investigate the relationship and underlying mechanisms between specific dysfunctional attitudes,social support,and depression among Chinese adolescents.METHODS This is a cross-sectional study which selected five middle schools in Shandong Province for investigation in March 2022.Participants included 795 adolescents(49.87%male,mage=15.15,SD=1.84,age range=11-18 years old).All participants completed the Dysfunctional Attitude Scale,Adolescent Life Event Scale,Beck Depression Inventory,and Social Support Rating Scale.A moderated mediation model was conducted to examine the relationship between specific dysfunctional attitudes,social support,and depression.RESULTS Results indicated that NLEs affected depression through the mediating role of specific dysfunctional attitudes(autonomy attitudesβ=0.21;perfectionismβ=0.25).Moreover,social support was found to moderate the mediating effect between NLEs,specific dysfunctional attitudes,and depressive symptoms(autonomy attitudes b2=-0.08;perfectionism b2=-0.09).CONCLUSION Dysfunctional attitudes mediated and social support moderated the relationship between NLEs and depression.Social support can buffer depression symptoms among adolescents with autonomy attitudes and perfectionism.

The Risk Role of Defeat on the Mental Health of College Students:A Moderated Mediation Effect of Academic Stress and Interpersonal Relationships

Background:College students face significant academic and physiological changes,making them more susceptible to psychological issues such as depression,self-injury,and suicidal ideation.Feelings of defeat can exacerbate these risks by increasing academic stress.However,interpersonal relationships can moderate the impact of academic stress on students’mental health.Utilizing the presage–process–product model,this study aims to empirically investigate how feelings of defeat influence depression,self-injury,and suicidal ideation among college students.Additionally,it explores the mediating role of academic stress and the moderating role of various types of interpersonal relationships.Methods:A total of 1612 college students(750 females,862 males,mean age=19.64±0.62 years)were recruited through cluster sampling.Data were collected via offline questionnaires administered by a trained psychology teacher and a postgraduate student,ensuring high reliability with two examiners per class.Latent profile analysis(LPA)was used to examine the impact of defeat on mental health outcomes,while mediation analysis was conducted to assess the roles of academic stress and interpersonal relationships.Results:1.Defeat is identified as a significant risk factor for mental health issues among college students;2.Four distinct patterns of interpersonal relationships were identified:the interpersonal-relationship risk group,the father–child-relationship high-risk group,the general interpersonal-relationship group,and the superior interpersonal-relationship group;3.Academic stress partially mediates the relationship between defeat and mental health issues such as depression,self-injury,and suicidal ideation;4.Different interpersonal relationship models moderate the impact of academic stress on depression and suicidal ideation.Conclusion:Defeat is a significant risk factor for mental health problems in college students.Academic stress partially mediates the negative impact of defeat on mental health,while patterns of interpersonal relationships moderate this impact.Effective early prevention and intervention should focus on monitoring students’stress levels and fostering warm,positive parent–child relationships.

Promoting Post-Traumatic Growth in Colorectal Cancer Patients:Exploring the Role of Social Support through a Chain Mediation Model

Colorectal cancer(CRC)poses significant physical and psychological challenges that necessitate an exploration of factors influencing post-traumatic growth(PTG)for patient well-being.This study aims to investigate the effects of positive psychological capital(PsyCap)and perceived stress on mediating the social support-PTG relation among 673 CRC patients.Social support,positive PsyCap,perceived stress,and PTG were assessed through questionnaires.The results indicated a direct prediction effect of social support on PTG(LICI=0.481,ULCI=0.644),with the direct effect being 59.5%.Both positive PsyCap and perceived stress exerted a mediating role in the correlation between social support and PTG,with the mediating effects occupying 29.4%(LICI=0.217,ULCI=0.343)and 5.7%(LICI=0.030,ULCI=0.082),respectively.Positive PsyCap further had a chain mediating effect on perceived stress(LICI=0.031,ULCI=0.074),with the chain effect accounting for 5.4%.The total impact of social support on PTG was 100%(LICI=0.882,ULCI=1.008).This model underscores the pivotal role of social support in promoting PTG in CRC patients.Positive PsyCap serves as a crucial mediator in the social support-PTG link,with perceived stress playing a sequential mediating role.Thesefindings suggest that strengthening social support networks and cultivating positive PsyCap may reduce perceived stress and promote the development of PTG in CRC patients.Consequently,intervention programs are recommended to improve the psychosocial well-being of CRC patients.

Parental Psychological Control and Internet Gaming Disorder Tendency:A Moderated Mediation Model of Core Self-Evaluation and Intentional Self-Regulation

Internet gaming disorder(IGD)among junior high school students is an increasingly prominent mental health concern.It is important to look for influences behind internet gaming disorder tendency(IGDT)in the junior high school student population.The present study aimed to reveal the explanatory mechanisms underlying the association between parental psychological control(PPC)and internet gaming disorder tendency among junior high school students by testing the mediating role of core self-evaluation(CSE)and the moderating role of intentional self-regulation(ISR).Participants in present study were 735 Chinese junior high school students who completed offline self-report questionnaires on parental psychological control,core self-evaluation,intentional self-regulation,and Internet gaming disorder tendency.Analyses were conducted via mediation and moderated mediation.The results showed that:(1)Parental psychological control was positively related to junior high school students’Internet gaming disorder tendency.Core self-evaluation,and intentional self-regulation were negatively related to junior high school students’Internet gaming disorder tendency,respectively.(2)Core self-evaluation partially mediated the relationship between parental psychological control and junior high school students’Internet gaming disorder tendency.(3)Intentional self-regulation moderated the association between parental psychological control and Internet gaming disorder tendency,as well as the relationships between parental psychological control and core self-evaluation and core self-evaluation and Internet gaming disorder tendency in the mediated model.Based on these findings,we believe that there is a need to weaken parental psychological control,strengthen junior high school students’core self-evaluation and intentional self-regulation,and to recognize the important role of parents as well as their children’s personal positive traits in the healthy development of junior high school students.

A Study on Rural Cultural Communication of Short Videos From the Perspective of Mediation-Taking the Popularization of “Village BA” (Village Basketball Association) in Qiandongnan as an Example

With the rise of new media and short videos shaping the new communication environment,rural culture has been mediated and transformed to spread to a wider region.As a cultural achievement of rural revitalization,“Village BA”(Village Basketball Association)demonstrates Chinese modernization.The use of short videos,mass rural movements,and“spectacle”spaces to attract spectators has become a key issue in the dissemination of rural culture.

健康体检人群高尿酸血症与慢性肾脏病的相关性

目的探讨健康体检人群高尿酸血症(HUA)和慢性肾脏病(CKD)的相关性。方法本研究为回顾性队列研究,选取2012年和2022年在中南大学湘雅医院健康管理中心参加2次健康体检,且2012年未发生CKD的6910例体检人员为研究对象。以2012年是否有HUA作为自变量,2022年是否发生CKD为结局变量,基线的年龄、性别、体重指数、腰围、肾小球滤过率、是否高血压、是否糖尿病、是否血脂异常、白细胞、血红蛋白、直接胆红素、丙氨酸氨基转移酶、2013年血尿酸水平作为混杂变量,分别构建四个Cox比例风险回归模型,分析HUA与CKD的相关性,并进行敏感性分析。采用百分位bootstrap进行中介效应检验,分析影响HUA和CKD相关性的中间危险因素。结果纳入研究的6910例体检者中,基线HUA总检出率为8.78%(607/6910)。2022年,CKD的发生率为7.2%(498/6910)。Cox回归分析显示在全人群中HUA与CKD发生呈正相关(HR=1.586,95%CI:1.224~2.055),逐步调整混杂因素后,HUA与CKD无相关性。按性别分层显示,女性人群中HUA与CKD发生呈正相关(HR=2.599,95%CI:1.069~6.316),调整混杂因素后,二者无相关性。而在男性人群中,HUA与CKD发生无相关性。敏感性分析中,将血尿酸按照男性>420μmol/L,女性>360μmol/L进行分组时,在全人群和女性人群中HUA与CKD发生均呈正相关,HR(95%CI)分别为1.627(1.282~2.064)、2.465(1.552~3.914);血尿酸按照连续变量处理时,在全人群和女性人群中HUA与CKD发生也均呈正相关,HR(95%CI)分别为1.004(1.003~1.005)、1.006(1.004~1.008),调整混杂因素后,二者无相关性。而在男性人群中,无论是按照尿酸水平分两组还是按照连续变量处理,HUA/血尿酸水平与CKD发生均无相关性。中介效应分析显示,全人群中,糖尿病和高血压是HUA/血尿酸水平与CKD的完全中介变量;男性人群中,糖尿病和高血压是血尿酸水平与CKD的完全中介变量;女性人群中,高血压是HUA/血尿酸水平和CKD的完全中介变量,其效应占比100%。结论HUA与CKD的发生呈正相关,尤其在女性人群中,但HUA不是CKD的独立预测因素。HUA通过糖尿病和高血压等影响CKD的发生。

余甘子果实斑点病菌LAMP可视化检测方法的建立

【目的】建立余甘子果实斑点病菌快速、便捷、灵敏、可视的环介导等温扩增技术(loop-mediated isothermal amplification,LAMP)检测方法,为该病害的风险预判和科学防治提供依据。【方法】以余甘子果实斑点病致病菌间座壳菌(Diaporthe phoenicicola)的翻译延伸因子EF-1α基因为靶序列,设计LAMP特异性扩增引物;以余甘子间座壳菌DNA为模板,优化反应温度、反应时间、dNTPs浓度、Mg^(2+)浓度和内外侧引物浓度比,建立LAMP检测最佳反应体系,测试其特异性和灵敏性,并对余甘子发病果实进行实际检测。【结果】适用于余甘子果实斑点病LAMP检测的最佳引物为引物组合4(EF4-F3/EF4-B3和EF4-FIP/EF4-BIP);LAMP检测最佳反应条件为dNTPs浓度1.0 mmol/L,Mg^(2+)浓度4 mmol/L,内外侧引物质量比6∶1,反应温度63℃,反应时间50 min。优化后的LAMP检测方法可特异性地检出余甘子间座壳菌(D.phoenicicola),检测灵敏度可达0.01 ng/μL,且在实际应用中准确率高达100%。【结论】首次建立了余甘子果实斑点病致病菌间座壳菌LAMP可视化快速检测方法,该方法特异性强、灵敏度高,操作简单,可用于田间余甘子果实斑点病菌的快速检测。

技术调节理论视野下的“师-技”关系及其实践指向

从技术调节理论看,“师-技”关系本质上是一种“共塑”关系。在教师使用技术情境中,教师与技术相互形塑,不仅技术调节着教师的经验和行动,而且教师也在“处置”、重构乃至重塑技术。“共塑”论不仅拒斥“替代论”、消除“恐惧论”,而且超越“代具论”和“互补论”,其实践意蕴在于让我们重新认识技术使用中教师的地位,明晰教师的技术使用责任,突破对技术的功能性认识,倡导技术“使用的技艺”,在技术设计中融入教师的教育价值诉求,真正让教师使用好技术。

医院磁性水平感知在低年资护士成长型思维与团队工作重塑间的中介效应

目的探讨医院磁性水平感知在低年资护士成长型思维与团队工作重塑行为间的中介效应,为护理管理提供参考。方法采用便利抽样法于2024年2-4月选取哈尔滨医科大学4所附属医院611名低年资护士,采用一般资料调查表、护士团队工作重塑量表、护士成长型思维评估量表及医院磁性要素量表进行调查。结果低年资护士团队工作重塑、成长型思维和医院磁性水平感知总分依次为(38.93±6.37)分、(105.44±17.36)分、(99.69±24.30)分,均处于中等水平。低年资护士团队工作重塑与医院磁性水平感知、成长型思维总分呈显著正相关(均P<0.05);医院磁性水平感知在低年资护士成长型思维对团队工作重塑的作用中起到部分中介效应,中介效应占总效应的43.18%。结论医院磁性水平感知是低年资护士成长型思维与团队工作重塑行为的中介变量。护理管理者在团队建设和管理过程中,应关注低年资护士成长型思维的培养与医院磁性水平感知的提升,使低年资护士能够更好地融入团队,共同推动团队工作重塑。

免疫细胞介导不同脂质与膝骨关节炎的相关性:欧洲个体全基因组关联分析

背景:观察性研究发现脂质与免疫细胞对于骨关节炎进展具有双重影响,但其具体作用机制尚不清楚。目的:探究脂质与膝骨关节炎的因果关系是否受免疫细胞调控。方法:179种脂质来源于Linda Ottensman数据库,从Open GWAS上获取到了731种免疫细胞相关的单核苷酸多态性作为工具变量,膝骨关节炎的全基因组关联研究数据来自于骨关节炎遗传学联盟。首先采用双样本孟德尔随机化方法从遗传学角度分别探讨脂质与膝骨关节炎、免疫细胞与膝骨关节炎、脂质与免疫细胞的因果关系。另外采用贝叶斯加权孟德尔随机化验证脂质与膝骨关节炎的因果关系,反向孟德尔随机化和Steiger方向性检验评估正向关系。随后进行敏感性分析,包括Cochran’s Q检验消除异质性,MR-PRESSO全局检验和MR-Egger截距排除水平多效性,留一法评估单个单核苷酸多态性驱动因素对随机估计的影响。最后,通过两步孟德尔随机化方法确定特定免疫细胞性状在脂质与膝骨关节炎因果关系中的中介效应。结果与结论:①逆方差加权法和贝叶斯加权算法共同确定8种与膝骨关节炎存在因果关系的脂质种类;②Cochran’s Q、MR-PRESSO和MR-Egger截距结果均无统计学意义(P<0.05);③同时共计算得出了3组中介关系,介导比例最低为11.85%,最高为45.48%;④提示免疫细胞水平在脂质与膝骨关节炎的调节进程中发挥潜在作用,这一发现能为深入探索膝骨关节炎的作用机制提供新的视角。

人工智能技术对制造业全球价值链地位的影响研究--基于人工智能专利数据的实证分析

人工智能发展可以为中国制造业全球价值链地位提升带来新的竞争力。利用2010—2022年中国省级制造业的面板数据,实证检验人工智能技术进步对中国制造业全球价值链地位的影响。研究发现:在样本期中,人工智能技术可显著促进制造业全球价值链地位的提升,该结论经过内生性处理和稳健性检验后依然成立;人工智能技术对制造业全球价值链地位的促进效应区位异质性明显,中国东部地区与对外开放水平高的省份中促进效果更好;机制检验发现,人工智能技术可通过促进科技创新和产业结构升级,间接提升制造业全球价值链地位;空间效应分析表明,人工智能技术对制造业全球价值链地位的影响存在明显的空间溢出效应。

炎症性肠病患者自我效能对生活质量的影响:体力活动与疾病负担的链式中介作用

目的探讨体力活动与疾病负担在炎症性肠病(IBD)患者自我效能感与生活质量间的作用。方法采用便利抽样法,选取312例IBD患者为研究对象。收集患者的一般资料。评估IBD患者的自我效能[慢性病患者自我效能量表(CDM-SES)]、体力活动[国际体力活动问卷-短卷(lPAQ-SF)]、疾病负担[炎症性肠病患者疾病负担程度(IBD-disk)量表]和生活质量[炎症性肠病生活质量问卷(IBDQ)]情况。分析体力活动与疾病负担在IBD患者自我效能感和生活质量间的链式中介作用。结果不同年龄、体质量指数(BMI)、居住地、婚姻状况、学历、疾病分期IBD患者的自我效能比较,差异有统计学意义(P<0.05);不同性别、年龄、居住地、婚姻状况、学历、疾病分期、是否使用生物制剂IBD患者的体力活动比较,差异有统计学意义(P<0.05);不同BMI、居住地、婚姻状况、学历、付费方式、疾病分期IBD患者的疾病负担比较,差异有统计学意义(P<0.05);不同年龄、居住地、婚姻状况、学历、付费方式、疾病分期、是否使用生物制剂IBD患者的生活质量比较,差异有统计学意义(P<0.05)。IBD患者生活质量与自我效能、体力活动呈正相关(r=0.605、0.482,P<0.01),与疾病负担、疾病分期呈负相关(r=-0.550、-0.362,P<0.01)。体力活动与疾病负担在IBD患者自我效能感和生活质量间起部分中介作用。结论IBD患者自我效能水平处于中等,体力活动水平较低,疾病负担较重。临床医护人员需积极采取措施提高患者的自我效能和体力活动水平,以减轻疾病负担。

土地流转与农业碳排放:理论机制与实证检验

文章基于2006—2022年中国30个省份面板数据,实证检验土地流转对农业碳排放的影响效应及作用机制。研究发现,土地流转对农业碳排放有显著负向影响;土地流转通过技术创新效应、规模经营效应和结构优化效应三种渠道显著降低农业碳排放。异质性结果表明,土地流转对农业碳排放的抑制作用在东部和西部地区、粮食主销区、种植业区尤为显著。基于此,应加快推进土地流转,发挥其对农业碳排放的减量效应;提升科技创新水平、发展适度规模经营、优化产业结构,因地制宜制定差异化政策。

大学生生命意义感与抑郁症状的关系:心理弹性的中介作用

采用中文人生意义问卷、医院焦虑抑郁量表、心理弹性量表对594名大学生进行调查,考察大学生生命意义感、心理弹性与抑郁症状的关系,以及心理弹性在大学生生命意义感与抑郁症状间的中介作用。研究发现:生命意义感及其两个维度(生命意义追寻、生命意义体验)与心理弹性呈显著正相关;生命意义感及其两个维度与抑郁症状呈显著负相关;心理弹性与抑郁症状呈显著负相关;心理弹性在大学生生命意义感与抑郁症状之间起部分中介作用。结果表明:大学生生命意义感、心理弹性对抑郁症状具有负向预测作用;大学生生命意义感不仅会直接影响抑郁症状,而且会通过心理弹性产生间接影响。

农业保险对绿色经济的经济效益的影响——基于劳动力转移的中介作用

基于30个地区的2011—2022年面板数据,通过构建中介效应模型,研究了农业保险的结构成长效应与劳动力转移、技术进步效应和绿色经济的经济效益之间的关系。研究表明:劳动力转移是农业保险助推绿色经济的经济效益发展的中介机制;农业保险的保障性通过结构成长效应推动劳动力转移,助力农业保险政策性发挥作用,产生技术进步效应,最终提升绿色经济的经济效益;对多维技术进步效应研究发现,农业保险通过推动节水灌溉技术和农业机械化技术进步,提升农业生产的效率和资源的边际利用率,释放劳动力,进而提升绿色经济的经济效益。进一步拓展发现,农业保险助推绿色经济的经济效益发展的效果,对城镇化水平较低、经济发展水平较高的地区更为明显。

信息搜索策略对DCS排险绩效的影响——认知负荷的中介效应研究

为探究在集散式控制系统(distributed control system,DCS)危险排除过程中控制员不同信息搜索策略对排险任务绩效的影响及认知负荷的中介效应,基于虚拟现实技术、皮肤电采样和眼动追踪技术构建模拟DCS工控平台,招募20名相关专业被试参与模拟排险实验并对其认知负荷及排险绩效进行量化,使用眼动轨迹匹配法判断被试的信息搜索模式,研究认知负荷的中介效应及中介机理。研究结果表明:不同信息搜索策略会显著影响任务绩效;认知负荷对该影响的中介效应高达89.66%,表明信息搜索策略主要通过影响认知负荷来间接作用于排险任务绩效,认知负荷越高,任务绩效越低;逻辑系统搜索策略能通过高效图式匹配减少认知资源消耗,显著抑制认知负荷增长,任务绩效表现最佳;空间系统搜索较难抑制认知负荷,任务绩效较差;随机搜索被试认知负荷显著高于其他组,绩效表现最差;此外,不同认知负荷水平下被试的信息搜索策略没有明显转变倾向。研究结果可为DCS控制人员的考核和培训提供理论支撑。

财政支农对长江经济带农民增收效应——基于空间杜宾模型的分析

基于2012—2021年长江经济带11省份面板数据,利用空间杜宾模型实证分析财政支农对农民收入的影响效应及作用机制。研究发现,财政支农通过农村人力资本积累对农民增收的促进效应显著,并存在显著的正向空间溢出效应。在此基础上提出扩大财政支农的支出规模、加快依据空间溢出效应制定政策措施、提升财政支农资金使用效率的相关政策建议。