Predictors of early vocabulary growth in children born preterm and full term: A study of processing speed and medical complications

Delays in expressive vocabulary may be harbingers of long-term language difficulties. In toddlers born full term (FT), individual differences in language processing speed are associated with variation in expressive vocabulary growth. Children born preterm (PT) are at increased risk for persistent language deficits. Here, we evaluate predictors of early vocabulary growth in PT toddlers in relation to two sources of variability: language processing speed and medical complications of prematurity. Vocabulary growth from 16 to 30 months (adjusted for degree of prematurity) was modeled longitudinally using parent reports in English-speaking FT (n = 63; ≥37 weeks, ≥2495 g) and PT (n = 69; ≤32 weeks, <1800 g) children, matched on sex and socioeconomic status. Children were tested in the “looking-while-listening task” at 18 months to derive a measure of language processing speed. Each PT child was assessed for number of medical complications (13 maximum), based on medical chart reviews. PT and FT children displayed similar vocabulary trajectories; however, birth group disparities began to emerge by 30 months. PT children were slower in language processing speed than FT children. Critically, language processing speed predicted expressive vocabulary size at 30 months; interactions with birth group were not significant (all p > .20). In PT children, faster language processing speed predicted stronger outcomes regardless of number of medical complications; slower processing speed and more medical complications predicted poorer outcomes. Faster processing speed reflected favorable neuropsychological processes associated with faster expressive vocabulary growth that overrode the impact of medical complications on language outcomes in PT children.     

当代中国青少年校园欺凌受害模式探索:基于潜在剖面分析

采用特拉华欺凌受害量表、病人健康问卷抑郁量表和广泛性焦虑量表对湖南省八个地区20所中学初一到高三3761名学生进行调查,探索学生欺凌受害模式,并对不同模式亚群体的人口学特点及其心理健康状况展开研究。结果发现：（1）校园欺凌中,言语欺凌、身体欺凌、关系欺凌、网络欺凌这四种常见欺凌类型具有较高的共发性,潜在剖面分析表明存在四种典型的校园欺凌受害模式："所有类型欺凌受害组"（1.5%）、"传统类型受害组"（3.9%）、"传统类型轻卷入组"（14.9%）和"未受害组"（79.6%）;（2）欺凌受害模式的人群分布受不同人口学特征（性别、年级、学校位置、自评学习成绩）的影响,男性、初中、乡村学校、成绩较差的学生更易受到欺凌;（3）即使是轻度的欺凌受害卷入,也会对个体心理健康产生较为严重的消极影响,对校园欺凌行为"零容忍"确有依据。     

纳入式分类分析法在潜在剖面模型的后续多元回归中的应用

纳入式分类分析法能克服传统的分类分析法对后续一元回归模型参数的低估,发挥潜在类别模型的后续分析简化变量间交互作用的功能。本文进一步将纳入式分类分析法拓展至潜在剖面模型后续的多元统计分析中。通过蒙特卡洛模拟实验,比较各种纳入变量的方法思路与后续分析模型在四种常见的多元回归模型中参数估计的表现。结果发现,纳入式分类分析法所需纳入的变量取决于后续分析中与因变量、潜类别变量的关系,且后续分析使用含交互作用的模型更为稳健。     

Adaptation of the Mullen Scales of Early Learning for use among infants aged 5‐ to 24‐months in rural Gambia

Infants in low‐resource settings are at heightened risk for compromised cognitive development due to a multitude of environmental insults in their surroundings. However, the onset of adverse outcomes and trajectory of cognitive development in these settings is not well understood. The aims of the present study were to adapt the Mullen Scales of Early Learning (MSEL) for use with infants in a rural area of The Gambia, to examine cognitive development in the first 24‐months of life and to assess the association between cognitive performance and physical growth. In Phase 1 of this study, the adapted MSEL was tested on 52 infants aged 9‐ to 24‐months (some of whom were tested longitudinally at two time points). Further optimization and training were undertaken and Phase 2 of the study was conducted, where the original measures were administered to 119 newly recruited infants aged 5‐ to 24‐months. Infant length, weight and head circumference were measured concurrently in both phases. Participants from both phases were split into age categories of 5–9 m (N = 32), 10–14 m (N = 92), 15–19 m (N = 53) and 20–24 m (N = 43) and performance was compared across age groups. From the ages of 10–14 m, Gambian infants obtained lower MSEL scores than US norms. Performance decreased with age and was lowest in the 20–24 m old group. Differential onsets of reduced performance were observed in the individual MSEL domains, with declines in visual perception and motor performance detected as early as at 10–14 months, while reduced language scores became evident after 15–19 months of age. Performance on the MSEL was significantly associated with measures of growth.     

Moral injury,coherence, and spiritual repair

In the PTSD literature, moral injury represents dissonance between a person’s beliefs about how they and the world should function, and the trauma event(s) they experienced. Given the association of moral injury with the assumptive world, it is not surprising the concept is closely intertwined with spiritual concerns. This paper reports on a spiritually integrated group intervention designed to help veterans with PTSD in the process of moral and spiritual repair. Qualitative findings are shared from interviews conducted with 18 participants who completed the intervention. Themes are centred around participants’ overall response to their experience in the group; where they are at regarding feelings such as guilt, shame, anger, trust, sense of betrayal, and desire for forgiveness; changes in religious/spiritual beliefs and practices and the experience of moral injury; and if they now find meaning in the trauma. The findings support the need for additional treatment options that address the moral and spiritual aspects of trauma.     

创伤事件的痛苦程度对创伤后成长的影响：核心信念挑战的作用

采用创伤事件终身经历问卷—学生版、核心信念量表、创伤后成长评定量表,对3所大学进行问卷调查,探索具体创伤事件痛苦程度与创伤后成长(PTG)的关系,并检验核心信念挑战在其中的中介作用。结果发现：(1)家人患病或死亡类的创伤事件痛苦程度可负向预测PTG,并以核心信念挑战为中介;(2)目睹他人或自身相关的创伤事件痛苦程度和自身受虐待类的创伤事件痛苦程度可正向预测PTG,并以核心信念挑战为中介;(3)自然灾害类的创伤事件痛苦程度和家庭冲突类的创伤事件痛苦程度与核心信念挑战和PTG都无显著相关。因此不同领域的创伤事件痛苦程度引发创伤后成长的可能性不同。     

Are there virtuous types? Finite mixture modeling of the VIA Inventory of Strengths

ABSTRACT

Philosophical and religious traditions often refer to ‘the virtuous person.’ This terminology usually carries with it the assumption that a class of individuals exists who have achieved a virtuous state. This study attempted to test that implication. The VIA Inventory of Strengths (VIA-IS) is intended as a comprehensive assessment of character strengths, which are conceptualized as markers of virtuous character. One prior study using taxometric methods found no evidence for the existence of such a category of individuals using VIA-IS scores. Subsequent literature has suggested the superiority of finite mixture modeling for identifying categorical structure. Latent profile analyses of 1–10 classes were conducted in a stratified sample of 10,000 adults. The results provided little evidence for class structure, and support thinking of virtue as something we must continuously pursue rather than a state that we achieve.     

3~5岁儿童母亲抚养压力类型特点及其影响因素

通过对6021名3~5岁儿童母亲抚养压力进行潜在剖面分析,探讨母亲抚养压力的类型特点及其影响因素.结果表明:(1)3~5岁儿童母亲的抚养压力可以分为五类:低压力型(22.31%,指来自儿童发展和自身承担母亲角色的压力均最低)、适度压力型(38.17%,指来自两方面的压力均处于平均水平)、高儿童侧面压力型(26.39%,指来自儿童发展的压力较高)、高家长侧面压力型(8.62%,指来自母亲角色的压力较高)和高综合压力型(4.52%,指来自两方面的压力均最高);(2)生育年龄和家庭收入较低的母亲更可能属于高儿童侧面压力型,对儿童期望较高的母亲更可能属于高家长侧面压力型;学历较低、夫妻关系较差的母亲更可能属于高儿童侧面、高家长侧面和高综合压力型.     

(Re)evaluating the Implications of the Autoregressive Latent Trajectory Model Through Likelihood Ratio Tests of Its Initial Conditions

The autoregressive latent trajectory (ALT) model synthesizes the autoregressive model and the latent growth curve model. The ALT model is flexible enough to produce a variety of discrepant model-implied change trajectories. While some researchers consider this a virtue, others have cautioned that this may confound interpretations of the model's parameters. In this article, we show that some—but not all—of these interpretational difficulties may be clarified mathematically and tested explicitly via likelihood ratio tests (LRTs) imposed on the initial conditions of the model. We show analytically the nested relations among three variants of the ALT model and the constraints needed to establish equivalences. A Monte Carlo simulation study indicated that LRTs, particularly when used in combination with information criterion measures, can allow researchers to test targeted hypotheses about the functional forms of the change process under study. We further demonstrate when and how such tests may justifiably be used to facilitate our understanding of the underlying process of change using a subsample (N = 3,995) of longitudinal family income data from the National Longitudinal Survey of Youth.