An Evaluation of Latent Growth Models for Propensity Score Matched Groups

Because random assignment is not possible in observational studies, estimates of treatment effects might be biased due to selection on observable and unobservable variables. To strengthen causal inference in longitudinal observational studies of multiple treatments, we present 4 latent growth models for propensity score matched groups, and evaluate their performance with a Monte Carlo simulation study. We found that the 4 models performed similarly with respect to model fit, bias of parameter estimates, Type I error, and power to test the treatment effect. To demonstrate a multigroup latent growth model with dummy treatment indicators, we estimated the effect of students changing schools during elementary school years on their reading and mathematics achievement, using data from the Early Childhood Longitudinal Study Kindergarten Cohort.     

Growth of Cognitive Skills in Preschoolers: Impact of Sleep Habits and Learning-Related Behaviors

Research Findings: The present study used a longitudinal design to identify how sleep habits and learning-related behaviors impact the development of cognitive skills in preschoolers (ages 3–5). Sixty- seven children with parental report and cognitive skill assessment data were included. Scores on the Differential Ability Scales (C. Elliott, 1990 Elliott, C. 1990. Differential Ability Scales: Introductory and technical handbook. New York: Psychological Corporation..  [Google Scholar]) were obtained at ages 3, 4, and 5. A Sleep Questionnaire (D. Gozal, 1998 Gozal, D. 1998. Sleep disordered breathing and school performance in children.. Pediatrics, 192: 616–620.  [Google Scholar]) with 12 items from the Child Behavior Checklist (T. M. Achenbach &; L. A. Rescorla, 2000 Achenbach, T. M. and Rescorla, L. A. 2000. Manual for ASEBA preschool forms &; profiles. Burlington: University of Vermont, Research Center for Children, Youth, &; Families..  [Google Scholar]) related to children's attention and activity levels was administered at age 3. Growth curve changes in cognitive scores were estimated using hierarchical linear modeling. Parental reports of nighttime sleep duration predicted level of cognitive skills at 3 years. The effect of sleep duration on cognitive scores was constant across age. Practice or Policy: Sleep and learning-related behaviors distinguish the cognitive skills children bring to preschool programs and impact gains made in skills while in preschool.     

Scaffolding Infants’ Play Through Empowering and Individualizing Teaching Practices

Research Findings: Using a qualitative research approach, this article explores teachers’ roles as scaffolders of infants’ play and the changing nature of their individualized support for infants’ learning and development through play in an infant group care setting. Three infant teachers in a child care center were followed over 3 months. Observations, interviews, ongoing conversations, e-mails, and reflective notes were used as data sources. Findings revealed that the teachers thought deeply about their roles as supporters of infants’ play, and they made intentional choices in scaffolding infants’ play. Each teacher's ways of empowering infants in play were grounded in her views of infants as learners and were individualized to accommodate children's unique learning styles and personalities. Practice or Policy: This study provides a window into the ways in which teachers working with the youngest children can set the stage for later learning.     

Assistant Teachers in Prekindergarten Programs: What Roles Do Lead Teachers Feel Assistants Play in Classroom Management and Teaching?

Assistant teachers are a ubiquitous yet virtually overlooked part of the early education workforce. Assistant teacher education level and its relationship to various classroom characteristics and the roles lead teachers feel assistants play in classroom management and teaching were examined in a nationally representative sample of 3,191 state-funded prekindergarten classes. Research Findings: Most classrooms had at least 1 paid assistant teacher, and classrooms with multiple assistants were more likely to be in Head Start. Lead teachers in public schools were more likely to have a bachelor's degree or higher, to be paired with an assistant with a high school degree, and to report fewer release hours for planning (alone or shared with assistants) than teachers in Head Start. Hierarchical multiple regression indicated that assistant teachers were rated as most useful to teaching duties when the classroom was in a Head Start setting, when the discrepancy between the lead and assistant teachers’ education was smaller, and when there were more shared release hours for planning. Practice and Policy: Implications focus on future prekindergarten teacher workforce needs, the need for more shared planning time and guidance in its use, and the need for more attention to and support for the training and roles of assistant teachers.     

Platform War vs. Platform Synergy? A Longitudinal Analysis of Media Substitution between Personal Computers and Mobile Devices

ABSTRACT

Research on media substitution theory has examined substitutional and/or complementary relationships between new and existing media. This study focuses on the growth of mobile platforms and investigates the relationship between mobile devices and personal computers. Using Nielsen’s panel data that provide electronically recorded media usage (N = 2,396), this study analyzes yearly changes in time allocation to mobile devices and PCs at total and content-specific usage levels during mobile 4G transition. Results suggest a complementarity dynamic between mobile devices and PCs; however, the patterns were more nuanced in light of the role of individual and structural factors when determining media choice.     

On the Boundaries of Framing Terrorism: Guilt,Victimization, and the 2016 Orlando Shooting

The 2016 Orlando shooting offers an intriguing lens through which to evaluate the boundaries of media frames in the interpretation of terrorism. Using an experimental design (N = 243), the current study investigated the effects of two dominant frames—the homophobic hate crime and the Islamic terrorist frame—on collective guilt, collective victimization, and pro–lesbian, gay, bisexual, transgender, and queer (LGBTQ) political action. In addition, political partisanship and social network diversity were evaluated as potential moderators. Compared to the Islamic terrorist frame, exposure to the homophobic hate crime frame increased collective guilt and decreased collective victimization, subsequently enhancing support for the LGBTQ community. Moreover, social network diversity was shown to override the framing effect, as individuals who reported high diversity were more likely to sign a petition in solidarity with the LGBTQ community, irrespective of frame condition.     

Video tutorials revisited: The relationship between their use and library assessment quiz scores

There is considerable literature evaluating video tutorials. By the first decade of the twenty-first century, research established that online video tutorials performed as well as traditional face-to-face instruction. However, there is little evidence that students actually viewed the tutorials. This study compares postinstruction assessment quiz scores from one class over four semesters with usage statistics for five video tutorials during the same time frame. The data indicate that students do view the tutorials. However, the results also show that usage statistics, together with quiz scores, declined as students progressed through the five tutorials. Additionally, the study determined that there was no positive correlation between the number of viewings and postviewing assessment scores.