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…

Teacher judgments impact on students' academic development, yet studies have revealed only modest judgment accuracy. Identifying biases hampering judgment accuracy is crucial. The present study scrutinized one such bias, namely reference group effects on teacher judgments (i.e., systematic relations between class-average ability and teacher…

Due to the increasing educational use of the Internet, children in elementary school need to critically evaluate source information to judge the trustworthiness of information. Studies with adult readers show that sourcing prompts and mutually exclusive claims in reading materials promote the use of source information. However, little is known…

In most general education classrooms in Germany, students with and without special educational needs are taught together. To support teachers in adapting instruction to these heterogeneous classrooms, we have developed learning progress assessment (LPA) and reading instructional materials, the "Reading Sportsman" (RS), in line with the…

Teachers' beliefs about teaching have been found to affect students' learning growth. The aim of this study was to investigate effects of teachers' constructivist and direct-transmissive beliefs on learners' reading progress and whether these effects are influenced by students' ability. We measured constructivist and direct-transmissive beliefs of…

Developmental Coordination Disorder (DCD) and Attention Deficit Hyperactivity Disorder (ADHD) often co-occur and are associated with specific learning difficulties. Robust prevalence estimations do not yet exist. We studied how symptoms of DCD and/or ADHD are related to difficulties in reading, writing, and mathematics. Using the data from a large…

Children who do not adequately master the transition from "learning to read" (LTR) to "reading to learn" (RTL) will clearly fall behind in every subject area during their secondary education. The purpose of this study was to determine whether a simple reading comprehension strategy developed by Schumaker, Denton, and Deshler…

Scientific reasoning abilities are already developing in elementary-school-aged children and enable them to understand the world around them. The goal of the current study was to develop a new instrument for 8- to 10-year-old children in Grades 3 and 4 to measure their understanding of the steps of the "scientific inquiry cycle" (SIC).…

PIRLS (Progress in International Reading Literacy Study) is the fourth assessment in the current trend series, following PIRLS 2001, 2006, and 2011. There were 61 participants in PIRLS 2016, including 50 countries and 11 benchmarking entities (e.g., regions of countries as well as additional grades or language groups from the participating…

If children fail to understand test instructions, measurements of their competence may be unfair and invalid. This is especially relevant for students with special educational needs (SEN) because they face greater challenges in comprehending instructions. Two interventions were designed to facilitate the comprehension of test requirements by…

PIRLS 2016 data from eight education systems were used to examine how teachers from three different language groups differed in their teaching of reading literacy. Teaching reading practices differed substantially between the three linguistic/cultural groups. In English-speaking systems, effective practices for establishing reading literacy seem…

This single-case study tested a peer tutoring model using a visualizing strategy (story mapping) to teach struggling students better text comprehension. Three teams each consisting of a tutor and a tutee attending a fourth-grade general education classroom participated in the experiment. A short series of observations was carried out before and…

Background: Although various studies on general language performance have investigated determinants of students' reading comprehension (e.g., reading amount), they have paid insufficient attention to how students perceive parental values influence their language-related values and behaviour--and, as a consequence, their performance. This is…

The present paper explores and compares the receptive vocabulary sizes of two groups of learners of different native languages. One of the most widely used vocabulary size tests is the Vocabulary Levels Test designed by Nation. Some reservations have been raised in relation to the adequacy of the Vocabulary Levels Test to estimate the vocabulary…

This study explores various measures of the ethnic makeup in a classroom and their relationship with student outcomes. We examine whether measures of ethnic diversity are related to achievement (mathematics, reading) and feeling of belonging with one's peers over and above commonly investigated composition characteristics. Multilevel analyses were…