Morphemes are the smallest meaningful unit of language (e.g., affixes, base words) that express grammatical and semantic information. Additionally, morphological knowledge is significantly related to children's word reading and reading comprehension skills. Researchers have broadly assessed morphological knowledge by using a wide range of tasks and stimuli, which has influenced the interpretation of the relations between morphological knowledge and reading outcomes. This review of 103 studies used meta-analytic structural equation modeling (MASEM) to investigate the relations between commonly occurring morphological knowledge assessment features (e.g., written versus oral, spelling versus no spelling) in the literature to reading outcomes, including word reading and reading comprehension. Meta-regression techniques were used to examine moderators of age and reading ability. Morphological assessments that used a written modality (e.g., reading, writing) were more predictive of word reading outcomes than those administered orally. Assessments of morphological spelling were more predictive of both word reading and reading comprehension outcomes than those that did not examine spelling accuracy. Age was a significant moderator of the relation between morphology and word reading, such that the relation was stronger for the younger than the older children. Younger children also demonstrated higher relations between multiple task dimensions and reading comprehension, including oral tasks, tasks without decoding, and tasks that provided context clues. These findings have important implications for future morphological intervention studies aimed to improve children's reading outcomes, in particular the use of orthography and spelling within the context of teaching morphology.

This work attempts to synthetize existing research about the impact of Covid-19 school closure on student achievement. It extends previous systematic reviews and meta-analyses by (a) using a more balanced sample in terms of country composition, (b) considering new moderators (type of data and research design), and (c) including studies on tertiary education students in addition to primary and secondary education students. Our meta-analysis findings show that the pandemic had, on average, a detrimental effect on learning. The magnitude of this learning deficit (about 0.19 standard deviations of student achievement) appears to be roughly comparable to that suffered by students who have experienced a significant disruption in their schooling due to a major natural disaster (e.g., Hurricane Katrina). Students are also found to have lost more ground in math/science than in other subjects. Additionally, one year or more after the first lockdown, students seem to have been unable to catch up on unfinished learning from the pandemic. This result suggests that more efforts should be made to ensure students recover their missed learning in order to avoid negative long-term consequences for them and society.

We investigated the effect of writing interventions on written composition for students in primary grades (K-G3) with a focus on whether effects vary as a function of different dimensions of composition outcomes (i.e., quality, productivity, fluency, and other), instructional focus (e.g., transcription, self-regulation strategies such as Self-Regulated Strategy Development [SRSD]), and student characteristics (i.e., initially weak writing skills). A total of 24 studies (number of effect sizes, = 166; = 5589 participants) met inclusion criteria. The overall mean effect size was moderate and positive ( = .31) with some variation across the dimensions of composition: .32 in writing quality, .31 in writing productivity, .15 in writing fluency, and .34 in writing: other. SRSD had large and consistent effect sizes across the outcomes (.59 to 1.04) whereas transcription instruction did not yield statistically significant effects on any dimensions of composition due to large variation of effects across studies. Variation in instructional dosage (total length of instruction) did not explain variation in the effect sizes. Lastly, the average effect on writing quality was larger for writers with weaker writing skills compared to those with typical skills.

Retell is used widely as a measure of reading comprehension. In this meta-analysis, we evaluated the relation between retell and other measures of reading comprehension among students in Grades 1-12. Data from 23 studies (82 effect sizes; = 4,705 participants) showed a moderate relation between retell and other measures of reading comprehension, = .46. Moderation analyses revealed that the relation was stronger when reading comprehension was measured by cloze or maze tasks than when measured using a multiple-choice format. In addition, the relation was weaker in higher grades, but this was largely explained by text genre or the number of prompts in retell. The relation between 'oral' retell and reading comprehension was stronger with a greater number of prompts provided during retell tests. In contrast, results did not differ by other features of retell such as reading mode (oral or silent), text genres of retell (narrative or informational), or use of different oral retell evaluation methods (e.g., number of words or ideas, overall quality). Overall, the results indicate a moderate relation, on average, between retell and other measures of reading comprehension. However, the moderate magnitude indicates caution for using retell as the sole measure of reading comprehension. The results also indicate a need for a better understanding about more systematic approaches to retell assessment (e.g., number and kind of prompts in the case of oral retell) as a measure of reading comprehension.

Environmental education focused on the early-childhood years is experiencing dynamic growth in research and practice due to persistent environmental challenges coupled with burgeoning interest in the documented benefits of nature-rich experiences for infants and children. To better understand the landscape of early childhood environmental education (ECEE) pedagogical practices and expected outcomes, we undertook a systematic review of empirical studies of ECEE programs. Focusing on a 25-year span, we surfaced 66 studies that met our inclusion criteria. We found that participants in such programs spanned the early-childhood age range (birth through age eight) with the majority involving three- to six-year-olds in teacher-led, formal (school-like) programs. The primary outcomes documented in our sample studies included environmental literacy development, cognitive development, and social and emotional development. To a lesser extent, the studies addressed physical development and language and literacy development. On balance, our sample of ECEE studies reported strongly positive findings associated with the aforementioned outcomes. The majority emphasized the effectiveness of play-based, nature-rich pedagogical approaches that incorporated movement and social interaction. We include a visualization that synthesizes cross-sample findings with the intention of assisting ECEE practitioners in developing, implementing, and evaluating programs as well as encouraging researchers to further study elements, processes, and theoretical assumptions inherent in them.

An increased focus on the use of research evidence (URE) in K-12 education has led to a proliferation of instruments measuring URE in K-12 education settings. However, to date, there has been no review of these measures to inform education researchers' assessment of URE. Here, we systematically review published quantitative measurement instruments in K-12 education. Findings suggest that instruments broadly assess user characteristics, environmental characteristics, and implementation and practices. In reviewing instrument quality, we found that studies infrequently report reliability, validity, and demographics about the instruments they develop or use. Future work evaluating and developing instruments should explore environmental characteristics that affect URE, generate items that match up with URE theory, and follow standards for establishing instrument reliability and validity.