A quick survey of physics textbooks shows that many (Knight, Young, and Serway for example) cover estimation, significant digits, precision versus accuracy, and uncertainty in the first chapter. Estimation "Fermi" questions are so useful that there has been a column dedicated to them in "TPT" (Larry Weinstein's "Fermi…

Parallel analysis (PA) is a useful empirical tool for assessing the number of factors in exploratory factor analysis. On conceptual and empirical grounds, we argue for a revision to PA that makes it more consistent with hypothesis testing. Using Monte Carlo methods, we evaluated the relative accuracy of the revised PA (R-PA) and traditional PA…

Narrative production is often used to measure a child's communicative progress. Typical methods include assessment of quality or content. We propose a new way to describe narrative performance with a simple graph that depicts recall accuracy in relation to the sequence of story details. Children with impaired hearing (9-12 years-old) watched a…

The purpose of the current study is to explore the potential impact of a goal-based writing program on EFL students' writing competence and their attitudes toward goal-setting activities. The goal-based writing program was developed within goal-setting theory and launched in a writing class of 39 EFL Vietnamese university students over ten weeks.…

This study compared Korean adult learners' English speech in dialogic and monologic tasks, measuring 57 college students' oral proficiency in terms of holistic and analytic grades. The statistical analyses were focused on two questions: (1) how much do the holistic grades of oral proficiency and analytic grades of the four linguistic features…

This study tests the Competing Systems Hypothesis (CSH) as applied to adult second language acquisition of aspect in Spanish. The CSH purports that differences among tutored and untutored learners result from competition between one system of underlying grammatical knowledge and another of learned metalinguistic knowledge in tutored learners…

The ability of automatically modeling learners' personalities is an important step in building adaptive learning environments. Several studies showed that knowing the personality of each learner can make the learning interaction with the provided learning contents and activities within learning systems more effective. However, the traditional…

This study investigates the effect of explicit teaching of segmentals vs. prosody on the quality of interpreting by Farsi-to-English interpreter trainees. Participants were native speakers of Farsi and BA students of English translation and interpreting in Iran, who were assigned to one of three groups. No differences in English language skills…

Background: Data-driven learning (DDL) has been regarded as one of the promising approaches that could effectively enhance writing performance of English as a foreign language (EFL) learners. Although extensive research has been conducted on the use of DDL in developing various aspects of writing skill, there exist only few studies to date that…

The present study was focused on acquisition of Chinese relative clauses (RCs) by second language (L2) learners and whether this acquisition was influenced by RC linguistic features, learners' Chinese proficiency levels, and their first language (L1). Data were gathered via a Chinese reading comprehension test, a grammaticality judgment task, a…

The present study investigates whether training second language pronunciation with tactile cues facilitates the production of non-native sounds involving accessible articulatory features. In a between-subjects experiment with a pretest-training-posttest design, 50 Turkish learners of English received audiovisual training on a set of target words…

We tested a method for solving Bayesian reasoning problems in terms of spatial relations as opposed to mathematical equations. Participants completed Bayesian problems in which they were given a prior probability and two conditional probabilities and were asked to report the posterior odds. After a pretraining phase in which participants completed…

We examined the developmental differences in motor control and learning of a two-segment movement. One hundred and five participants (53 female) were divided into three age groups (7-8 years, 9-10 years and 19-27 years). They performed a two-segment movement task in four conditions (full vision, fully disturbed vision, disturbed vision in the…

Emerging cognitive control supports increasingly efficient goal-directed behaviors. With age, children are increasingly expected to decide autonomously and with little external aid which goals to attain. However, little is known about how children engage cognitive control in such a self-directed fashion. The present study examined self-directed…

We examined whether akshara knowledge, phonological awareness, phonological memory, and RAN predict variability in word and nonword reading skills in Grade 1-4 children (N = 200) learning to read Sinhala. Hierarchical regression analyses showed that akshara knowledge had the strongest unique association with both word and nonword reading accuracy…