Testing Measurement Invariance Across Unobserved Groups: The Role of Covariates in Factor Mixture Modeling

Factor mixture modeling (FMM) has been increasingly used to investigate unobserved population heterogeneity. This study examined the issue of covariate effects with FMM in the context of measurement invariance testing. Specifically, the impact of excluding and misspecifying covariate effects on measurement invariance testing and class enumeration was investigated via Monte Carlo simulations. Data were generated based on FMM models with (1) a zero covariate effect, (2) a covariate effect on the latent class variable, and (3) covariate effects on both the latent class variable and the factor. For each population model, different analysis models that excluded or misspecified covariate effects were fitted. Results highlighted the importance of including proper covariates in measurement invariance testing and evidenced the utility of a model comparison approach in searching for the correct specification of covariate effects and the level of measurement invariance. This approach was demonstrated using an empirical data set. Implications for methodological and applied research are discussed.     

Investigating gender differences in mathematics by performance levels in the Italian school system

Amongst the extensive research conducted about girls’ lack of interest in STEM subjects, an issue that is frequently examined is the learning of mathematics. This research investigates the gender gap in mathematics among Italian students based on performance levels, using standardised large-scale data from INVALSI tests. We performed a quantile regression to better understand the differences along the entire score distribution. A latent class model was then estimated to identify groups of students with similar performance levels, taking into account the gender covariate. The results indicate that boys are already ahead from primary education and that there is a general decrease in the performance as students progress through the education stages.     

恰当运用多媒体信息技术打造语文高效课堂

本文从运用多媒体信息技术,实现课堂中“以学生为主体”的教育理念;实现课堂导入情景化,激发学生求知欲;培养学生“自主”“合作”“探究”学习方式以及运用多媒体信息技术扩充课堂容量,实现知识的当堂检测反馈,这几个方面来阐述如何恰当地运用多媒体信息技术打造语文高效课堂。     

小学作文教学中微课应用效果的调查研究

微课作为新型的教学资源受到越来越多的重视。本文首先分析了微课应用的意义,然后在微课模式下以"作文改写"为例对小学作文教学进行设计,最后通过实际的调查,比较前后微课对教学效果的影响,结果表明在小学作文教学中应用微课可以改变学生的学习方式,提高学生的学习积极性。     

浅议高中化学实验课中的创新思维教学

创新能力是人类进步与发展的原动力,是人类独有的能力,现代社会发展迅速,社会市场经济对人才的要求已经不仅仅满足于应用技术与理论知识,还要求其具有创新意识与创新能力。而对学生意识的培养的化学实验课,教学效果显著。本文结合实际教学经验,对高中化学实验课中的创新思维教学策略进行了深入探究。     

初中作文结尾写法之我见

作文教学一直是初中语文教学的一个难点,也是学生和家长经常提到的一个难题,那么我们在实际教学当中,就需要注重培养学生作文写作的技能技巧,一步一个脚印地去培养学生的写作能力。一篇作文从开始构思到最后的修改文稿,这中间的过程非常复杂,其中作文结尾的写法很有讲究,一般情况下学生的作文在结尾的时候才能够揭示主题,表情达意,彰显作文的中心思想。因此在作文训练当中,培养学生作文结尾的写作方法技巧,也是作文教学的一个重点内容,让学生掌握基本的结尾写作技巧,逐步提高学生的写作能力。     

论大学生信息获取技能训练学习环境的创设

创设大学生信息获取技能训练的学习环境旨在为当代大学生建造一个科学、有效的从各种信息源中广泛收集、巧妙获取各种有用信息相关技巧与能力的平台，用科学发展观的理念构建的《文献信息检索与利用技能训练课》厦其配套学习指导、辅导等，能引导学生在学习和使用信息检索技术、参与信息活动的过程中，实现知识与技能、过程与方法、情感态度与价值观等不同层面信息素养的综合提升和协调发展。     

关于射影几何教学的几点探讨

射影几何是非度量形式的几何。较之于欧氏几何,不仅观点不同,而且概念极其抽象。因此,上好绪论课和理解透概念对于学生学好该门课程非常重要。本文拟就教学实践的具体做法,谈了作者的看法。     

Java语言的异常处理设计

文章介绍了面向对象Java语言中异常处理的基本思想、异常处理的相关语句的使用方法及它的具体实现.     

面向对象程序设计浅析

通过分析面向对象程序设计的基本思想和技术特点及他们之间的区别和联系,介绍了面向对象程序设计的优点和发展趋势。