The Acquisition of Japanese as a Second Language and Processability Theory: A Longitudinal Study of a Naturalistic Child Learner

The aim of this study was to investigate longitudinally how a child learner acquired verbal morpho-syntax in Japanese in a naturalistic second language (L2) context. Specifically the points of emergence for three verbal morpho-syntactic structures, namely verbal inflection, the V-te V structure and the passive/causative structure, were investigated within a framework of Processability Theory (PT) (Pienemann, 1998b). The subsequent development of these structures was also examined. Unlike earlier research about morpheme orders and developmental sequences in language acquisition which was criticised because of its apparent lack of theoretical underpinnings, Pienemann’s Processability Theory (PT)(1998b) connects the processability of morpho-syntactic structure to linguistic theories. Pienemann also claims that this theory can be used to explain the acquisition of a wide range of morpho-syntactic structures and that it is typologically plausible and applicable to any language. In recent times PT has been extensively tested in a range of languages acquired as an L2, including German, English and Swedish (Pienemann, 1998b; Pienemann & Håkansson, 1999) and Italian and Japanese (Di Biase & Kawaguchi, 2002). The findings from these studies support this theory. Following the acquisition criteria proposed by Pienemann (1998b), the current study analyses the points of emergence of verbal morpho-syntactic structures by a seven year old Australian boy who was acquiring Japanese as a second language (JSL) naturalistically. Data were collected through audio taping approximately 90 minute interactions between the child and other Japanese speakers at each of the 26 sessions over a one-year and nine month period. The task-based elicitation method was used to create as spontaneous interaction as possible between the child and his interlocutors

Describing the acquisition of the passive voice by a child learner of Japanese as a second language from a Processability Theory perspective

This longitudinal case study reports on the acquisition of Japanese as a second language (L2) by a child learner with English as his first language (L1) who was acquiring Japanese naturalistically. In particular this study focusses on the acquisition by the child of a non-canonical mapping structure, namely the passive voice in relation to canonical mapping structures (e.g., the active voice) within the framework of the Unmarked Alignment Hypothesis (UAH) and the Lexical Mapping Hypothesis (LMH). These hypotheses are two of the main pillars of the extended Processability Theory (PT) (Pienemann, Di Biase & Kawaguchi, 2005). When compared to a large body of studies on the L1 acquisition of the passive voice, there have been only few theoretically motivated studies on the L2 acquisition of this structure, and further no studies to date have been undertaken using L2 child informants. The results of the earlier PT-based research (e.g., Wang, 2009) found that the acquisition of the passive voice by adult L2 learners occurred later than did the active voice. The results of the current child Japanese L2 study confirmed this, supporting Kawaguchi’s (2007) claim that the learner’s choice of a syntactic structure is restricted by developmental skills in argument-function mapping as predicted by UAH and LMH. Further, the results indicate that, prior to the emergence of the passive voice, a developmental period for the child to attempt non-canonical mapping existed and that the passive verbal morphology often appeared in a non-target like way until the end of the observation period

Similarities and differences between simultaneous and successive bilingual children: Acquisition of Japanese morphology

This paper compares the acquisition of Japanese morphology of two bilingual children who had different types of exposure to Japanese language in Australia: a simultaneous bilingual child who had exposure to both Japanese and English from birth, and a successive bilingual child who did not have regular exposure to Japanese until he was six years and three months old. The comparison is carried out using Processability Theory (PT) (Pienemann 1998, 2005) as a common framework, and the corpus for this study consists of the naturally spoken production of these two Australian children. The results show that both children went through the same developmental path in their acquisition of the Japanese morphological structures, indicating that the same processing mechanisms are at work for both types of language acquisition. However, the results indicate that there are some differences between the two children, including the rate of acquisition, and the kinds of verbal morphemes acquired. The results of this study add further insight to an ongoing debate in the field of bilingual language acquisition: whether simultaneous bilingual children develop their language like a first language or like a second language

Similarities and differences between simultaneous and successive bilingual children : acquisition of Japanese morphology

This paper compares the acquisition of Japanese morphology of two bilingual children who had different types of exposure to Japanese language in Australia: a simultaneous bilingual child who had exposure to both Japanese and English from birth, and a successive bilingual child who did not have regular exposure to Japanese until he was six years and three months old. The comparison is carried out using Processability Theory (PT) (Pienemann 1998, 2005) as a common framework, and the corpus for this study consists of the naturally spoken production of these two Australian children. The results show that both children went through the same developmental path in their acquisition of the Japanese morphological structures, indicating that the same processing mechanisms are at work for both types of language acquisition. However, the results indicate that there are some differences between the two children, including the rate of acquisition, and the kinds of verbal morphemes acquired. The results of this study add further insight to an ongoing debate in the field of bilingual language acquisition: whether simultaneous bilingual children develop their language like a first language or like a second language

Enforced Granulocyte/Macrophage Colony-stimulating Factor Signals Do Not Support Lymphopoiesis, but Instruct Lymphoid to Myelomonocytic Lineage Conversion

We evaluated the effects of ectopic granulocyte/macrophage colony-stimulating factor (GM-CSF) signals on hematopoietic commitment and differentiation. Lineage-restricted progenitors purified from mice with the ubiquitous transgenic human GM-CSF receptor (hGM-CSFR) were used for the analysis. In cultures with hGM-CSF alone, hGM-CSFR–expressing (hGM-CSFR+) granulocyte/monocyte progenitors (GMPs) and megakaryocyte/erythrocyte progenitors (MEPs) exclusively gave rise to granulocyte/monocyte (GM) and megakaryocyte/erythroid (MegE) colonies, respectively, providing formal proof that GM-CSF signals support the GM and MegE lineage differentiation without affecting the physiological myeloid fate. hGM-CSFR transgenic mice were crossed with mice deficient in interleukin (IL)-7, an essential cytokine for T and B cell development. Administration of hGM-CSF in these mice could not restore T or B lymphopoiesis, indicating that enforced GM-CSF signals cannot substitute for IL-7 to promote lymphopoiesis. Strikingly, >50% hGM-CSFR+ common lymphoid progenitors (CLPs) and >20% hGM-CSFR+ pro-T cells gave rise to granulocyte, monocyte, and/or myeloid dendritic cells, but not MegE lineage cells in the presence of hGM-CSF. Injection of hGM-CSF into mice transplanted with hGM-CSFR+ CLPs blocked their lymphoid differentiation, but induced development of GM cells in vivo. Thus, hGM-CSF transduces permissive signals for myeloerythroid differentiation, whereas it transmits potent instructive signals for the GM differentiation to CLPs and early T cell progenitors. These data suggest that a majority of CLPs and a fraction of pro-T cells possess plasticity for myelomonocytic differentiation that can be activated by ectopic GM-CSF signals, supporting the hypothesis that the down-regulation of GM-CSFR is a critical event in producing cells with a lymphoid-restricted lineage potential

The inclusion of blastomeres into the inner cell mass in early-stage human embryos depends on the sequence of cell cleavages during the fourth division

The fate of the ICM in humans is still unknown, due to the ethical difficulties surrounding experimentation in this field. In this study we have explored the existing time-lapse recording data of embryos in the early stages of development, taking advantage of the large refractile bodies (RBs) within blastomeres as cellular markers. Our study found that the cellular composition of the ICM in humans is largely determined at the time of the fourth division and blastomeres which cleave first to fourth, during the fourth division from 8 cells to 16 cells, have the potential to be incorporated in the ICM

0，1歳児を担当する保育者が捉える保育所に通う子どもの食をめぐる問題 ―インタビュー調査から考える今後の食支援の課題―

　　The purpose of this study was to consider various issues concerning the eating behaviors of infants at nursery schools. Ten childcare workers responsible for infants aged 0 and 1 year olds were interviewed; their responses were recorded, transcribed and analyzed. 　　The results suggested the possibility that parents who are excessively busy have negative attitudes about childcare, and that these attitudes have a negative effect on their children’s eating behaviors at home. A possible result of this may be children’s weak chewing ability, fussiness about food, and unbalanced diets. 　　The authors conclude that because of this sort of situation in children’s homes it is necessary to create support systems at nursery schools. In order to provide and cater for each infant’s need, nursery school teachers and staff must strive to understand the parents’ and infants’ current situations. In order to move toward such a proactive family support system, it is necessary to review the current nursery school operations and the staff-to-staff relationships as well as relationships with parents. Future tasks for nursery schools include more elaborate observation which will aid in finding better ways to coordinate what happens at school with what is happening in children’s homes

Dietary acrylamide intake and the risk of liver cancer: The japan public health center-based prospective study

Acrylamide has been studied for its carcinogenicity in experimental animals, causing tumors at several organ sites, and has been considered probably carcinogenic to humans as well. Given the small number of epidemiological studies that have been conducted, it is still uncertain whether the consumption of acrylamide is associated with liver cancer. Therefore, we investigated a study to determine the possible relationship between acrylamide intake and the risk of developing liver cancer in the Japanese population. A total of 85,305 participants, from the Japan Public Health Center-based Prospective Study, who provided a validated food-frequency questionnaire were enrolled between 1995 and 1998. During a median of 16.0 years follow-up, 744 new liver cancer cases were identified. Compared to the lowest tertile of acrylamide consumption (<4.8 μg/day), the multivariate hazard ratio (HR) for the highest tertile (≥7.6 μg/day) was 0.79 (95% confidence interval [CI] = 0.65-0.95) for liver cancer using multivariable model 1, adjusted for smoking status, body mass index (BMI), physical activity, medical history, and alcohol consumption; whereas the inverse relationship disappeared after additionally adjusting for coffee consumption in multivariable model 2 with HR of 1.08 (95% CI = 0.87-1.34) for the highest tertile. The effect of dietary acrylamide intake on the risk of liver cancer was not observed in the Japanese population.Zha, L.; Sobue, T.; Kitamura, T.; Kitamura, Y.; Ishihara, J.; Kotemori, A.; Liu, R.; Ikeda, S.; Sawada, N.; Iwasaki, M.; Tsugane, S.; JPHC Study Group, f.t. Dietary Acrylamide Intake and the Risk of Liver Cancer: The Japan Public Health Center-Based Prospective Study. Nutrients 2020, 12, 2503. https://doi.org/10.3390/nu1209250