Adults find negative sentences difficult to process, but an informative context can facilitate processing substantially, suggesting that much of this difficulty may come from the pragmatics of negation. Are children sensitive to the pragmatics of negation as well? Although children perform poorly on many tests of negation comprehension, we argue…

This investigation examined English as a foreign language (EFL) teachers' perceptions of their self-efficacy in using instructional strategies in the context of the Mekong Delta of Vietnam. The research was designed as a descriptive research collecting quantitative and qualitative data from a questionnaire and semi-structured interviews. Forty-six…

The aim of research was validation of a method for the assessment of cognitive complexity of chemical technology problem tasks. The method included an assessment of the difficulty of concepts and an assessment of their interactivity. As a research instrument for assessing performance, test of knowledge was used. Each task in the test was followed…

Idioms abound in both spoken and written English, yet they present a particularly thorny problem in foreign language learning. One of the reasons for this difficulty is second language learners' ignorance of the holistic nature of English idioms. Based on computerized reading tasks, the present study probes the effects of using electronic glosses…

Purpose: Speech perception in noise becomes difficult with age but can be facilitated by audiovisual (AV) speech cues and sentence context in healthy older adults. However, individuals with Alzheimer's disease (AD) may present with deficits in AV integration, potentially limiting the extent to which they can benefit from AV cues. This study…

The Cognition Hypothesis postulates that more cognitively complex tasks can trigger more accurate and complex language production, thereby advancing second language (L2) development. However, few studies have directly examined the relationship between task manipulations and L2 development. To address this gap, this article reviews, via an analytic…

Recent research on individual differences in object cognition (OC) focused on determining how objects group together, and what type of processing lies behind the clusters--a single domain-general or multiple domain-specific processes. The expertise hypothesis suggests that all object categories are processed by the same mechanism that is…

Conventional coordinate systems are often considered representational tools for reasoning about mathematical concepts. However, researchers have shown that students experience persistent difficulties as they engage in graphing activity. Using examples from research and textbooks, we present a framework based on a conceptual analysis of the use of…

The importance of students being acquainted with algebraic ideas before secondary education has been revealed in the research literature. It is therefore essential that prospective elementary teachers (PTs) be prepared to instill an early algebra perspective in their teaching. However, PTs often show difficulties in algebra content knowledge,…

Special relativity theory (SRT) has recently gained popularity as a first introduction to "modern" physics thinking in upper level secondary physics education. A central idea in SRT is the absolute speed of light, with light propagating with uniform speed relative to the reference frame of the observer. Previous research suggests that…

Relationships among task characteristics, L2 performance, and interlanguage development are of interest both for SLA research and the design of syllabuses and language teaching materials. Complexity has been identified as a promising, but methodologically problematic, task design feature. A study was conducted of the effects of progressive…

Typically developing (TD) children exhibit a transfer deficit imitating significantly less from screen demonstrations compared to a live demonstrations. Although many interventions for children with autism spectrum disorder (ASD) include video materials, little research exists comparing the effectiveness of video demonstration over live…

This article is a conceptual and methodological exploration of a new construct, task interactional difficulty, and of a possible approach to assessing task demands in general. After arguing for the use of 'task difficulty' instead of 'task complexity', the notion of task interactional difficulty is analyzed, first by reviewing previous SLA…

Tackling mathematics tasks often involves reading and interpreting different semiotic resources such as natural language (words), mathematical notation, and images. This study aims to enhance knowledge of how meaning relations, in the form of "cohesive ties" between and within different semiotic resources, are related to how difficult it…

In Turkish, null and overt arguments do not show the same distributional properties at discourse level. There are discourse-pragmatic factors affecting this distribution (Kerslake, 1987; Ruhi, 1996; Turan, 1995; Çeltek & Oktar, 2014; Çeltek Kaili, 2017). Previous studies suggest that the acquisition of argument realization system in second…