The articles in this special issue take an important step in beginning to test the PET framework. Together, these articles illustrate the importance of considering individual differences in attitudes and prior knowledge as well as differences in task demands when investigating the role of emotions in shaping cognitive processing while reading…

This study investigates how task complexity affects native speakers' and second language (L2) learners', and experts' perceptions of task difficulty in writing tasks. It also explores how task complexity influences English native speakers' and L2 learners' linguistic complexity in their writing. Ninety participants performed one simple and one…

Differentiation and achievement grouping are frequently implemented practices to adapt education to students' varying educational needs based on achievement level. Potential didactical and socioemotional advantages and disadvantages of these practices have been discussed in the literature. However, little is known about the perspective of students…

Self-efficacy in mathematics is related to engagement, persistence, and academic performance. Prior research focused mostly on examining changes to students' self-efficacy across large time intervals (months or years), and paid less attention to changes at the level of lesson sequences. Knowledge of how self-efficacy changes during a sequence of…

This study investigated primary students' perceptions of Content and Language Integrated Learning (CLIL) Natural Science and Social Sciences and variations in perceptions by individual and social factors. The sample comprised 524 Spanish-speaking students aged 9-13 years from bilingual Spanish-English schools in Andalusia (Spain). The study…

Learning, development, and response to instruction often involve changes in the strategies that learners use to solve problems. In this chapter, our focus is on mathematical problem solving in both children and adults. We offer a selective review of research on three classes of factors that may influence processes of strategy change in…

This study investigated the perceived sources of support and stress of Brazilian immigrant adolescents living in the United States. The sample was comprised of 62 Brazilian immigrant adolescents between the ages of 14 and 19 (M = 16.55, SD = 1.31). The study also explored how these individuals cope with stress and how they help their friends.…

The present study focused on how self-control over pace might help learners successfully extract information from digital learning aids. Past research has indicated that too much control over pace can be overwhelming, but too little control over pace can be ineffective. Within the popular self-testing domain of flashcards, we sought to elucidate…

This study explores the relative contribution to EFL reading comprehension of the following individual-difference variables: prior knowledge, topic interest, linguistic proficiency, gender, reading motivation, and metacognitive awareness. It also investigates the relationship between the aforementioned individual differences and the role of text…

This paper reports on a study which highlighted goal orientation as an approachable individual difference (ID) variable which may further our understanding of foreign/second language learning experience. The study sought to (i) gauge the extent of goal orientation in foreign language learners' profile and (ii) examine how goal orientation affects…

The use of ability variables for grouping students is pervasive in elementary schools. Teachers form these groups judgmentally, taking into account formal (e.g., test) and informal (e.g., personal observation) sources of information. Their judgments of students' abilities are reasonably accurate. Such grouping can be explained as functional on…

The 12th iteration of the International Conference on Educational Data Mining (EDM 2019) is organized under the auspices of the International Educational Data Mining Society in Montreal, Canada. The theme of this year's conference is EDM in Open-Ended Domains. As EDM has matured it has increasingly been applied to open-ended and ill-defined tasks…

Previous research on online discussions has focused on university students learning higher level subjects. The purpose of the current study was to examine whether online discussions could be used effectively by secondary school students attempting to learn introductory level topics. Forty-­five male students, ranging in age from 13 to 15 years…