Stereotype threat (ST) is a potential explanation for inequalities in language competencies observed between students from different language backgrounds. Language competencies are an important prerequisite for educational success, wherefore the significance for investigation arises. While ST effects on achievement are empirically well documented,…

Differentiation hypotheses concern changes in the structural organization of cognitive abilities that depend on the level of general intelligence (ability differentiation) or age (developmental differentiation). Part 1 of this article presents a review of the literature on ability and developmental differentiation effects in children, revealing…

To examine developmental processes, intervention effects, or both, longitudinal studies often aim to include measurement intervals that are equally spaced for all participants. In reality, however, this goal is hardly ever met. Although different approaches have been proposed to deal with this issue, few studies have investigated the potential…

Vocabulary knowledge is one of the most important elements of reading comprehension. Text coverage is the proportion of known words in a given text. We hypothesize that text comprehension increases exponentially with text coverage due to network effects and activation of prior knowledge. In addition, the lexical threshold hypothesis states that…

The increasing number of students with German as a second language (GL2) poses a great challenge for schools. Previous studies showed that especially young learners with a migration background are lagging behind in the acquisition of second language (L2) literacy. Experiencing problem behaviors (PB) in addition, might pose even greater challenges.…

The topic of keeping livestock is very well suited to addressing the ecological, social, and economic aspects of the sustainable production of our food in school lessons. However, the production of animal-based foods is mainly outside the personal experience of children and young people. To derive relevant implications for teaching, this paper…

Children's positive perceived motor competence (PMC) provides motivation for physical activity. Theoretically young children (<8 years) have inflated PMC but as children cognitively develop, perceptions are hypothesized to decrease. This study investigated strength of PMC association over time, whether any change was negative (i.e. PMC…

Do social cognition and epistemological understanding promote elementary school children's experimentation skills? To investigate this question, 402 children (ages 8, 9, and 10) in 2nd, 3rd, and 4th grades were assessed for their experimentation skills, social cognition (advanced theory of mind [AToM]), epistemological understanding (understanding…

This study investigated the enjoyment, boredom, and anxiety of elementary school students and the relations of these emotions with achievement in two domains. Seven-hundred-and-sixty-seven second- and fourth-graders completed an adaptation of the Achievement Emotions Questionnaire-Elementary School (AEQ-ES: Lichtenfeld, Pekrun, Stupnisky, Reiss,…

One important issue of the current empirical research on special education is the investigation of the effects of inclusive education compared to segregating education for students with learning disabilities (LD). For this purpose, measurement instruments have to be appropriate for students with LD and measurement equivalent across students with…

The association between academic self-concept and achievement is assumed to be reciprocal. Typically, the association is analyzed by variants of the classical cross-lagged panel model. Results with more recently developed methodological approaches, for example, the random intercept cross-lagged panel model, its continuous-time implementation, and…

In line with the reciprocal internal/external frame of reference model (RI/E model), it is well-established that secondary school students generate domain-specific ability self-concepts by comparing their own performance in a domain socially (i.e., with others' performance in this domain) and dimensionally (i.e., with their own performance in…

Though it is well-established that self-esteem develops from childhood well into old age, little is known about the processes that influence this change, especially among young populations. This international, cross-sequential study examined the development of self-esteem in 1599 second-graders (Age M[subscript T1] = 7.99, SD[subscript T1] = 0.52…

This paper reports findings of a project on pedagogical translanguaging (PTL) among 128 fourth-grade students learning English as a foreign language (EFL) in German primary schools. Over a period of six months, 20% of lesson time in EFL classes was devoted to multilingualism involving students' minority languages. In a control group pre-post-test…

Academic language has been shown to significantly contribute to success across school subjects. However, to date, there are no empirical studies addressing its development across primary school age. The present study investigated the growth of academic vocabulary and influential conditions from Grades 2 to 4 based on a newly developed and…