Are RAN deficits in university students with dyslexia due to defective lexical access,impaired anchoring,or slow articulation?

The purpose of this study was to examine different hypotheses in relation to RAN deficits in dyslexia. Thirty university students with dyslexia and 32 chronological-age controls were assessed on RAN Digits and Colors as well as on two versions of RAN Letters and Objects (one with five items repeated 16 times and one with 20 items repeated four times). In addition, participants were tested on discrete letter and object naming, phonological awareness, orthographic knowledge, and speed of processing, and the RAN Letters and Objects total times were partitioned into pause times and articulation times. Results showed first that the dyslexia group was slower than the control group on all RAN tasks and the differences remained significant after controlling for discrete naming time. Second, both groups were slower in the large item set condition (20 ×?4) than in the small set condition (5 ×?16). Third, the dyslexia group was slower than the control group in both the pause and the articulation times. Although none of the processing skills was sufficient on its own to eliminate group differences in RAN Letters components, phonological awareness, and orthographic processing were sufficient on their own to eliminate group differences in the RAN Objects pause time. Taken together, our findings suggest that the deficits in RAN are not due to impaired anchoring, but rather due to subtle impairments in lexical access (specific to alphanumeric RAN), serial processing, and articulation.     

Examining the Cross-Lagged Relationships Between RAN and Word Reading in Chinese

The purpose of this 4-year longitudinal study was to specify the direction of the relationship between RAN and word reading (accuracy and fluency) in Chinese. This is important in light of arguments that the developmental relationships between RAN and reading can disclose changes in the reading processes underlying reading as development proceeds. One hundred thirty-five Mandarin-speaking Chinese children (65 boys, 70 girls; M age = 96.40 months) were assessed on RAN (digits), word-reading accuracy (Character Recognition), and word-reading fluency (One-Minute Reading). The children were assessed on the same measures when they were in Grades 3, 4, and 5. The results of path analysis indicated that the effects between RAN and word reading were unidirectional and subject to the type of reading outcome: Only RAN predicted word reading and only when word reading was operationalized with a reading fluency measure.     

Teacher Educators’ Activity Aiming to Support Inquiry Through Mathematics and Science Teacher Collaboration

This study explores teacher educators’ (TEs’) activity as they support mathematics and science teacher collaboration in co-designing and jointly implementing tasks. We view TEs’ activity through the lens of Activity Theory and expansive learning and draw evidence from data generated within the mascil project that linked mathematics and science teaching with workplace situations through inquiry-based teaching. We focus on five TEs’ actions and goals, use data from their professional development sessions with teachers and from the TEs’ interactions during their own meetings, and highlight the illuminating case of one teacher educator. We trace evidence indicating paths of actions followed by each Teacher Educator and look for indications of their professional learning. Our analysis reveals generic and content-focused actions. All TEs faced different kinds of contradictions and had difficulties handling them. In terms of professional learning, all TEs adapted their prior teacher education practices and appreciated the critical role of epistemological differences between the two disciplines.

     

Family parameters of achievement: A structural equation model

The aim of the present study was to investigate the effects of several structural and functional characteristics of the family on the child’s actual school achievement. A structural equation model was constructed and its ability to fit the data was tested. It was found that the child’s achievement is directly influenced by the socio-economic status of the family, which is a structural characteristic. The child’s achievement is also directly influenced by the child self-image and by various indications of the family function, such as parental involvement activities and expectations. Furthermore, the results show that the child’s self image is the strongest factor that explains school achievement. Among the many implications that this study offers for educational policy and practice is that children’s achievement may be significantly influenced by altering factors that are outside of school and outside of the students themselves; namely, parental behavior and family functioning.     

Eye movements of university students with and without reading difficulties during naming speed tasks

Although naming speed (NS) has been shown to predict reading into adulthood and differentiate between adult dyslexics and controls, the question remains why NS is related to reading. To address this question, eye movement methodology was combined with three letter NS tasks (the original letter NS task by Denckla & Rudel, Cortex 10:186–202, 1974, and two more developed by Compton, The Journal of Special Education 37:81–94, 2003, with increased phonological or visual similarity of the letters). Twenty undergraduate students with reading difficulties (RD) and 27 without (NRD) were tested on letter NS tasks (eye movements were recorded during the NS tasks), phonological processing, and reading fluency. The results indicated first that the RD group was slower than the NRD group on all NS tasks with no differences between the NS tasks. In addition, the NRD group had shorter fixation durations, longer saccades, and fewer saccades and fixations than the RD group. Fixation duration and fixation count were significant predictors of reading fluency even after controlling for phonological processing measures. Taken together, these findings suggest that the NS–reading relationship is due to two factors: less able readers require more time to acquire stimulus information during fixation and they make more saccades.     

Transactional associations between mother–child conflict and child externalising and internalising problems

The purpose of the present study was to investigate the existing transactional associations between mother–child conflict and the child’s internalising and externalising problems. To this end, longitudinal data were used, covering ages 7–15. The sample consisted of 1,136 mothers and their children who participated in the National Institute of Child Health and Human Development longitudinal study. The current analysis employs the Autoregressive Latent Trajectory (ALT) model that enables the simultaneous investigation of (1) the developmental stability, (2) the developmental change, (3) the longitudinal inter-relations, (4) the time-specific associations and (5) the directionality of the relations among the variables under examination. It was found that mother–child conflict increased across time and externalising problems decreased from childhood to adolescence, while internalising problems showed intra-individual stability. Further, mother–daughter conflict increased at a higher rate than mother–son conflict. The cross-lagged regressions suggested that the association between conflict and externalising problems is bi-directional from age 7 to age 9. However, a child effect was found from age 9 to age 15, in that the child’s externalising problems continually influenced mother–child conflict but not the other way around. In contrast, the association between internalising problems and conflict was limited to cross-sectional and overtime associations suggesting that the association between internalising problems and conflict is mostly due to the co-variation between them.     

Does task-focused versus task-avoidance behavior matter for literacy development in an orthographically consistent language?

We examined the importance of children’s classroom activity, defined as task-focused versus task-avoidance behavior, on different literacy outcomes in an orthographically consistent language. Greek children (n = 95) were tested in kindergarten, grade 1, and grade 2 on measures of general cognitive ability, phonological awareness, RAN, and short-term memory. The teachers of the children also assessed their task-focused behavior. Nonword decoding, reading fluency, spelling, and reading comprehension measures were administered in grades 2 and 3. The results indicated that task-focused behavior accounted for unique variance in spelling and reading comprehension, even after controlling for the effects of autoregressor, non-verbal IQ, and phonological processing.     

UNIVERSITY STUDENTS’ UNDERSTANDING OF THERMAL PHYSICS IN EVERYDAY CONTEXTS

Thermal physics is in the realm of everyday experience, underlies current environmental concerns, and underpins studies in sciences, health and engineering. In the state of NSW in Australia, the coverage of thermal topics in high school is minimal, and, hence, so is the conceptual understanding of students. This study takes a new approach at exploring conceptions of students with a qualitative analysis facilitated by NVivo complemented with reference to sociocultural ideas of learning. A 2-part pen and paper question was given to 598 first year university students of different educational backgrounds (and therefore physics expertise). ‘The Question’ was based on 2 familiar scenarios and required the selection of a concept first, followed by an explanation. The results showed that concepts were favoured based on a student’s everyday experience and their curriculum through high school, and some were more effective than others in making scientifically congruent responses. The reported thermal physics alternative conceptions were also examined in our sample, and students’ reasoning behind such conceptions indicate that some conceptions do not inhibit scientifically congruent responses whilst others do. The results implicate language and the everyday experiences of the student in the teaching and learning of thermal physics.