Operational momentum in large-number addition and subtraction by 9-month-olds

Recent studies on nonsymbolic arithmetic have illustrated that under conditions that prevent exact calculation, adults display a systematic tendency to overestimate the answers to addition problems and underestimate the answers to subtraction problems. It has been suggested that this operational momentum results from exposure to a culture-specific practice of representing numbers spatially; alternatively, the mind may represent numbers in spatial terms from early in development. In the current study, we asked whether operational momentum is present during infancy, prior to exposure to culture-specific representations of numbers. Infants (9-month-olds) were shown videos of events involving the addition or subtraction of objects with three different types of outcomes: numerically correct, too large, and too small. Infants looked significantly longer only at those incorrect outcomes that violated the momentum of the arithmetic operation (i.e., at too-large outcomes in subtraction events and too-small outcomes in addition events). The presence of operational momentum during infancy indicates developmental continuity in the underlying mechanisms used when operating over numerical representations.     

Models and fictions in science

Non-actual model systems discussed in scientific theories are compared to fictions in literature. This comparison may help with the understanding of similarity relations between models and real-world target systems. The ontological problems surrounding fictions in science may be particularly difficult, however. A comparison is also made to ontological problems that arise in the philosophy of mathematics.

Effects of an early reading intervention based on grapho-syllabic decoding and fluency training in French elementary schools

IntroductionStudies conducted in recent decades have led to the development of instructional interventions to help prevent or eliminate a large proportion of reading difficulties. However, few experiments have been conducted in French schools.ObjectiveAims for this research were to create, implement and evaluate a remediation program for French students with reading difficulties up to the end of elementary school.MethodThis paper examines the effects of a decoding-skills and fluency-based intervention on 133 struggling readers in second- to fifth-grade. Depending on the nature of their reading difficulties, students were given a year-long training based either on grapho-syllabic conversion — focusing on syllable units, rather than phonemic units, is considered a promising way of helping French-speaking beginning readers — or on repeated reading techniques, used to improve fluency.ResultsIncreases in written-word identification scores were greater for students who followed the program than they were for a control group of 184 students with reading difficulties who did not follow the program.ConclusionThe results show that programs combining early evaluation of written-word identification abilities followed by a year-long series of remediation sessions focusing on specific difficulties can help students progress in written-word identification. However, further research is needed to examine why our program was less effective with children from disadvantaged (“éducation prioritaire”) areas.     

Demands and capacities versus demands and performance

This article examines the proposed relabeling of “capacities” as “performance” in the Demands and Capacities Model of stuttering in terms of four issues involving the model's demands component, theoretical versatility, genetic potential, and current clinical uses. Although the proposed changes should resolve the measurement issues of concern, it is suggested that this change may not be of sufficient value or significance for a Demands and Performance Model to supplant the Demands and Capacities Model.     

Comparing the effects of generating questions,testing, and restudying on students' long-term recall in university learning

We compared the long-term effects of generating questions by learners with answering questions (i.e., testing) and restudying in the context of a university lecture. In contrast to previous studies, students were not prepared for the learning strategies, learning content was experimentally controlled, and effects on factual and transfer knowledge were examined. Students' overall recall performance after one week profited from generating questions and testing but not from restudying. When analyzing the effects on both knowledge types separately, traditional analyses revealed that only factual knowledge appeared to benefit from testing. However, additional Bayesian analyses suggested that generating questions and testing similarly benefit factual and transfer knowledge compared with restudying. The generation of questions thus seems to be another powerful learning strategy, yielding similar effects as testing on long-term retention of coherent learning content in educational contexts, and these effects emerge for factual and transfer knowledge.     

School-based prevention of anxiety using the “My FRIENDS” emotional resilience program: Six-month follow-up

Anxiety-related problems are common in childhood and adolescence and, if left untreated, may hold short-term and long-term negative consequences for psychosocial functioning and other domains. In addition to having negative individual-level consequences, anxiety-related problems may have a negative impact at the school level. Because almost all children and adolescents attend school, school plays a significant role in development as a socialisation agent and provides an ideal venue for the delivery of prevention and intervention programs. Here, we present the first evidence regarding the effectiveness of the My FRIENDS emotional resilience program as a method of reducing anxiety among students in Slovenia and the feasibility of implementing the program at the national level. Grade 8 students (N = 78) were assigned either the intervention condition, the My FRIENDS program, or a no-treatment control condition. We measured general anxiety and its components using the AN-UD (Lestvica anksioznosti za učence in dijake) anxiety scale and internalising difficulties using the Strengths and Difficulties Questionnaire at preintervention, postintervention, and 6-month follow-up assessments. Students in the intervention condition reported lower amounts of general anxiety and its cognitive component of worrying, and fewer internalising difficulties at the postintervention and follow-up assessments.     

The role of personality traits,core self‐evaluation,and emotional intelligence in career decision‐making difficulties

This study examines the role of personality traits, core self‐evaluation, and emotional intelligence (EI) in career decision‐making difficulties. Italian university students (N= 232) responded to questions on the Big Five Questionnaire, Core Self‐Evaluation Scale, Bar‐On Emotional Quotient Inventory, and Career Decision‐Making Difficulties Questionnaire. It was found that EI adds significant incremental variance compared with personality traits and core self‐evaluation in predicting career decision‐making difficulties. The results draw attention to the unique role of EI in career decision‐making difficulties, offering new research opportunities and intervention possibilities.     

也释《周易》卦爻辞中的“艰”——兼与廖名春先生商榷

"艰"有"难治"与"治难"两个基本意义范畴。"治难"意义范畴,后造"垦"字分担,造"垦"之前,"艰"字兼之。"垦"字分担了"艰"字"治难"之义后,"艰"字便只有"难治"之义,沿用至今。《周易》本经的六个"艰"字皆可训"垦",耕垦,开辟,拓荒之义,意即不畏艰难,知难而进,多用其力,掘进不辍。"艰"与"垦",字为古今,语同一源。训"艰"为"垦",乃"艰"字本有之义,无须假借为说。《噬嗑》、《大畜》、《明夷》卦爻辞的"利艰贞"体现了圣人"开拓进取,因时而变"的人生智慧;《泰》九三之"艰贞,无咎"、《大有》初九之"艰则无咎"、《大壮》上六之"艰则吉"诠释了圣人"自强不息,知难而进"的人生追求。