Dorsomedial Prefrontal Activity to Sadness Predicts Later Emotion Suppression and Depression Severity in Adolescent Girls

The present study used cross‐lagged panel analyses to test longitudinal associations among emotion regulation, prefrontal cortex (PFC) function, and depression severity in adolescent girls. The ventromedial and dorsomedial PFC (vmPFC and dmPFC) were regions of interest given their roles in depression pathophysiology, self‐referential processing, and emotion regulation. At ages 16 and 17, seventy‐eight girls completed a neuroimaging scan to assess changes in vmPFC and dmPFC activation to sad faces, and measures of depressive symptom severity and emotion regulation. The 1‐year cross‐lagged effects of dmPFC activity at age 16 on expressive suppression at age 17 and depressive symptomatology at age 17 were significant, demonstrating a predictive relation between dmPFC activity and both suppression and depressive severity.     

A Comparison of Label Switching Algorithms in the Context of Growth Mixture Models

Simulation studies involving mixture models inevitably aggregate parameter estimates and other output across numerous replications. A primary issue that arises in these methodological investigations is label switching. The current study compares several label switching corrections that are commonly used when dealing with mixture models. A growth mixture model is used in this simulation study, and the design crosses three manipulated variables—number of latent classes, latent class probabilities, and class separation, yielding a total of 18 conditions. Within each of these conditions, the accuracy of a priori identifiability constraints, a priori training of the algorithm, and four post hoc algorithms developed by Tueller et al.; Cho; Stephens; and Rodriguez and Walker are tested to determine their classification accuracy. Findings reveal that, of all a priori methods, training of the algorithm leads to the most accurate classification under all conditions. In a case where an a priori algorithm is not selected, Rodriguez and Walker’s algorithm is an excellent choice if interested specifically in aggregating class output without consideration as to whether the classes are accurately ordered. Using any of the post hoc algorithms tested yields improvement over baseline accuracy and is most effective under two-class models when class separation is high. This study found that if the class constraint algorithm was used a priori, it should be combined with a post hoc algorithm for accurate classification.     

Gender Encoding in Gender Diverse and Gender Conforming Children

Previous research suggests that people encode gender starting in childhood. The present research asked whether gender diverse children (i.e., children whose gender identity or expression differs from that expected based on assigned sex) encode gender. Results showed that 3- to 5-year-old gender diverse participants (N = 71), siblings of gender diverse children (N = 52), and gender conforming controls (N = 69) did not significantly differ in degree of gender encoding. These results converge with prior research to suggest that gender diverse children process gender in ways that do not differ from gender conforming children, and provide further evidence that gender encoding may be a common aspect of person perception in societies that support a binary view of gender.     

Halting the Summer Achievement Slide: A Randomized Field Trial of the KindergARTen Summer Camp

In this randomized field trial of KindergARTen Camp, a 6-week summer enrichment program in literacy and the fine arts, we analyzed the summer learning outcomes of 93 treatment and 35 control students from high-poverty schools in Baltimore, Maryland. This experiment offers evidence concerning the causal effect of the program on 5 measures of students' literacy achievement. We found treatment effects during the summer months that were of both practical and statistical significance on the Developmental Reading Assessment (DRA) and the Word List A assessments. In addition, results from surveys of KindergARTen Camp students, parents, and teachers revealed strong satisfaction with the program. We conclude by discussing the contextual factors that may have contributed to these results.     

Activity Achievement Emotions and Academic Performance: A Meta-analysis

Educational Psychology Review - Achievement emotions are emotions linked to academic, work, or sports achievement activities (activity emotions) and their success and failure outcomes (outcome...     

New findings for concreteness and imagery effects in written composition

This experiment investigated the effects ofword concreteness and either imagery, verbal,or control strategy instructions on thecomposition of written definitions. Resultsrevealed significant effects of wordconcreteness on several quantity and qualityvariables, but no significant effect ofstrategy instructions or interaction betweenconcreteness and strategy instructions. Results of self-ratings of strategies actuallyused in composing revealed that a mentalimagery strategy was used with concrete wordsand a verbal strategy was used with abstractwords regardless of strategy instructions. Findings replicated the results of Tirre,Manelis and Leicht [(1979) Journal of ReadingBehavior 11, 99–106] in the production ofwritten composition on word relationships, andpartially replicated the results of Sadoski,Kealy, Goetz and Paivio [(1997) Journal of EducationalPsychology 89, 518–526] in the timedwritten production of word definitions. Results are interpreted from Dual Coding Theoryand levels of processing perspectives.     

Online discussion in schools: Towards a pedagogical framework

In this paper, we draw on Bernstein's [1996. Pedagogy, symbolic control and identity: Theory, research, critique. London: Taylor and Francis] notion of framing of pedagogical communication to propose a framework for use in specific literacy contexts. Here, we illustrate how this framework has emerged from an examination of text response online discussions in the English/Language Arts curriculum in primary and secondary school contexts ostensibly concerned with the development of critical literacies. We focus on the selection of the literary texts and the prompts around those, the pacing and sequencing of the discussion, and the way in which responses are negotiated online. Using this framework in two specific contexts, we find that the more mediated, but less interactive framing in one institutional context tends to support the development of desired critical literacy practices, while the less mediated but more interactive framing of the online discussions in the second context is less supportive of such literacy practices. We suggest that this analytical framework could be adapted for use in a range of online contexts in order to make more visible the extent to which the intended forms of literacy are realised and which interactional affordances are exploited in the process.     

Chemosensory-based contextual conditioning inHermissenda crassicornis

In two experiments, the marine molluskHermissenda crassicornis was exposed to context discrimination training. In one context, defined by the presence of a diffuse chemosensory stimulus (shellfish extract A), brief, unsignaled, unconditioned stimuli (USs; high-speed rotation) were presented; in a second context, defined by the presence of shellfish extract B, no USs were presented. Animals were then tested (at both 1.5 and 24 h) by exposing them to small pieces of the shellfish meat used to define the two contexts. The latency to strike at the meat served as an index of the context-US association. In Experiment 1, the latency to strike at the cue associated with rotation was reduced relative to both preconditioning strike latencies and the associatively neutral cue. However, in a two-choice test where the animals could approach the conditioned or neutral stimulus, the animals regularly avoided the stimulus paired with rotation. Moreover, if, following conditioning, the animals were presented with an unsignaled rotation in the conditioned context or the neutral context, the animals exhibited more effective defensive clinging (an unconditioned reflex normally elicited by rotation) in the conditioned context, suggesting that it “prepared” the animal for the aversive US. In total, these results demonstrate thatHermissenda is capable of making associations to diffuse background (contextual) stimuli. Moreover, the results suggest that pairing the chemosensory cue with an aversive US elicits a strike response inHermissenda when the animal is placed in forced contact with the cue and an active avoidance response when the animal can choose between that cue and a neutral cue.