A Cross-Cultural Test of Implicit Theories of Re-requesting

Extant U.S. research shows that when a persuader’s initial message is rebuffed, the next requesting message will tend to be ruder and more aggressive than the initial appeal. The robustness of these results has rarely been tested cross-culturally. Using conversational constraints theory, we further explicate implicit theories by investigating the perceived importance of constraints of re-requesting styles across two cultural-linguistic groups (i.e., Korean and American English speakers). Consistent with the “rebuff phenomenon,” results revealed that people rated the task constraint (“clarity”) as significantly more important, and the three face-related constraints (“concern for the other’s feelings,” “minimizing imposition,” and “avoiding negative evaluation”) as significantly less important for the second-attempt requesting than for the initial requesting. Some of these tendencies were more pronounced among American English speakers than among Korean speakers.     

Cell-enclosing gelatin-based microcapsule production for tissue engineering using a microfluidic flow-focusing system

Gelatin-based microcapsule production using a microfluidic system and the feasibility of the resultant microcapsules for constructing spherical tissues surrounded by heterogeneous cells were studied. The first cell-encapsulation and subsequent cell-enclosing microparticle encapsulation were achieved using a microfluidic flow-focusing droplet production system. A hollow-core structure of about 150 μm in diameter was developed by incubating the resultant microparticles at 37 °C, which induced thermal melting of the enclosed unmodified gelatin microparticles. Mammalian cells filled the hollow-cores after 4 days of incubation. A cell layer on the cell-enclosing microcapsules was developed by simply suspending the microcapsules in medium containing adherent fibroblast cells. This method may prove useful for the generation of gelatin microcapsules using a microfluidic system for formation of artificial tissue constructs.     

Instruction Matters to the Development of Phoneme Awareness and Its Relationship to Akshara Knowledge and Word Reading: Evidence from Sinhala

We examined whether global instruction of complex akshara and explicit phoneme-level instruction of akshara impact the development of phoneme awareness and its association with akshara knowledge and word reading accuracy. The participants were 100 Sinhala-speaking children from Grades 4 and 5 in Sri Lanka. Phoneme awareness showed stronger growth and a significant relationship with word reading accuracy and akshara knowledge only after children received explicit phoneme-level instruction in akshara construction. Both word reading accuracy and akshara knowledge predicted phoneme awareness, but the opposite was not true. The results suggest that phoneme awareness in Sinhala is sensitive to the method of reading instruction, and contrary to the studies in alphabetic languages, it does not have a bidirectional relationship with reading.     

Cognitive predictors of literacy acquisition in syllabic Hiragana and morphographic Kanji

We examined the role of different cognitive skills in word reading (accuracy and fluency) and spelling accuracy in syllabic Hiragana and morphographic Kanji. Japanese Hiragana and Kanji are strikingly contrastive orthographies: Hiragana has consistent character-sound correspondences with a limited symbol set, whereas Kanji has inconsistent character-sound correspondences with a large symbol set. One hundred sixty-nine Japanese children were assessed at the beginning of grade 1 on reading accuracy and fluency, spelling, phonological awareness, phonological memory, rapid automatized naming (RAN), orthographic knowledge, and morphological awareness, and on reading and spelling at the middle of grade 1. The results showed remarkable differences in the cognitive predictors of early reading accuracy and spelling development in Hiragana and Kanji, and somewhat lesser differences in the predictors of fluency development. Phonological awareness was a unique predictor of Hiragana reading accuracy and spelling, but its impact was relatively weak and transient. This finding is in line with those reported in consistent orthographies with contained symbol sets such as Finnish and Greek. In contrast, RAN and morphological awareness were more important predictors of Kanji than of Hiragana, and the patterns of relationships for Kanji were similar to those found in inconsistent orthographies with extensive symbol sets such as Chinese. The findings suggested that Japanese children learning two contrastive orthographic systems develop partially separate cognitive bases rather than a single basis for literacy acquisition.     

Cognitive predictors of word reading in Sinhala

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 across grades. Akshara knowledge and RAN predicted word and nonword reading fluency. The impact of phonological memory and syllable awareness on reading was mostly mediated by akshara knowledge, and phoneme awareness was not uniquely associated with word reading skills in any grade. These results suggest that there are multiple cognitive correlates of accurate and fluent word reading in Sinhala, and akshara knowledge is the most important predictor of learning to read words. The findings have implications for the literacy acquisition, development, and instruction in alphasyllabaries.

     

Examining an Extended Home Literacy Model: The Mediating Roles of Emergent Literacy Skills and Reading Fluency

We examined the developmental relationships between home literacy environment (parent teaching, shared book reading) and emergent literacy skills (phonological awareness, letter knowledge, vocabulary, rapid naming speed) in kindergarten, reading accuracy and fluency in Grade 1, and reading comprehension in Grades 2 and 3 in a sample of Canadian children learning to read English (N = 214). Results from a latent variable model showed that parent teaching predicted letter knowledge and phonological awareness, and shared book reading predicted vocabulary and rapid naming speed after controlling for family socioeconomic status. Moreover, both parent teaching and shared book reading contributed indirectly to reading accuracy and fluency in Grade 1, which then mediated the effects of home literacy environment on reading comprehension in Grades 2 and 3. The results suggest that the effects of home literacy environment on later reading development are distributed via more pathways than previously thought.