360 research outputs found
Childrenâs inference generation:the role of vocabulary and working memory
Inferences are crucial to successful discourse comprehension. We assessed the contributions of vocabulary and working memory to inference making in children aged 5 to 6 (n=44), 7 to 8 (n=43) and 9 to 10 (n=43) years. Children listened to short narratives and answered questions to assess local and global coherence inferences after each one. ANOVA confirmed developmental improvements on both types of inference. Although standardized measures of both vocabulary and working memory were correlated with inference making, multiple regression analyses determined that vocabulary was the key predictor. For local coherence inferences, only vocabulary predicted unique variance for the 6- and 8- year-olds; in contrast, none of the variables predicted performance for the 10-year-olds. For global coherence inferences, vocabulary was the only unique predictor for each age group. Mediation analysis confirmed that, although working memory was associated with the ability to generate local and global coherence inferences in 6- to 10-year-olds, the effect was mediated by vocabulary. We conclude that vocabulary knowledge supports inference making in two ways: through knowledge of word meanings required to generate inferences and also through its contribution to memory processes
The relations between morphological awareness and reading comprehension in beginner readers through to young adolescents
Background. Morphological awareness plays a crucial role in supporting higher level text processing. We examined its contribution to reading comprehension in children of different ages and ability levels in order to determine when and for whom morphological awareness is of particular importance. Methods. Three groups of children (aged 6-8 years, N=128; 9-11 years, N=126; and 12-13 years N=147) completed judgement and production tasks to measure awareness of compounding, inflections, and derivations. Non-verbal reasoning, vocabulary, phonological awareness, word reading and reading comprehension were also assessed. Results. Principal components analysis yielded a single primary factor of morphological awareness for each age group. Separate hierarchical multiple regressions revealed that this morphological awareness factor accounted for significant unique variance in reading comprehension for groups of 6-8 years and 12-13 years, beyond age, non-verbal reasoning, vocabulary, phonological awareness and word reading. Vocabulary also uniquely predicted reading comprehension in all three age groups. Quantile regression analyses at three points in the reading comprehension distribution (0.1, 0.5, 0.9) indicated that morphological awareness and vocabulary predicted reading comprehension to a similar extent across the ability range. Conclusions. Our results clarify the fundamental role of morphological awareness in reading comprehension across all levels of readers. In addition, vocabulary and morphological awareness each make critical contributions to comprehension ability in developing readers across the ability range
Inference making in young children:The concurrent and longitudinal contributions of verbal working memory and vocabulary
Inference making is fundamental to the construction of a coherent mental model of a text. We examined how vocabulary and verbal working memory relate to inference development concurrently and longitudinally in 4- to 9-year-olds. Four hundred and twenty pre-kindergartners completed oral assessments of inference making, vocabulary breadth, vocabulary depth, and verbal working memory each year until grade 3. Concurrently, hierarchical regressions revealed that a greater proportion of total variance in inference making was explained by vocabulary and verbal working memory for younger than older children. Vocabulary breadth was a stronger predictor of inference than verbal working memory but the opposite pattern was found for vocabulary depth and verbal working memory. The longitudinal relations between inference making, vocabulary and verbal working memory were investigated in two separate cross-lagged models: one with vocabulary breadth and a second with vocabulary depth. Both vocabulary breadth and depth explained subsequent inference making and verbal working memory throughout the early grades. Inference making also predicted subsequent vocabulary depth. The results highlight the critical role of vocabulary knowledge in the development of inference ability both within and across time, the importance of vocabulary in supporting the development of verbal working memory, and the changing dynamics between language and memory in early development
The Process and Product of Coherence Monitoring in Young Readers:Effects of Reader and Text Characteristics
We examined sixth gradersâ detection of inconsistencies in narrative and expository passages, contrasting participants who were monolingual speakers (N=85) or Spanish-English DLLs (N=94) when recruited in pre-kindergarten (PK). We recorded self-paced reading times and judgements about whether the text made sense, and took an independent measure of word reading. Main findings were that inconsistency detection was better for narratives, for participants who were monolingual speakers in PK, and for those who were better word readers. When the text processing demands were increased by separating the inconsistent sentence and its premise with filler sentences there was a stronger signal for inconsistency detection during reading for better word readers. Reading patterns differed for texts for which children reported an inconsistency compared to those for which they did not, indicating a failure to adequately monitor for coherence while reading. Our performance measures indicate that narrative and expository texts make different demands on readers
International genome-wide meta-analysis identifies new primary biliary cirrhosis risk loci and targetable pathogenic pathways.
Primary biliary cirrhosis (PBC) is a classical autoimmune liver disease for which effective immunomodulatory therapy is lacking. Here we perform meta-analyses of discovery data sets from genome-wide association studies of European subjects (n=2,764 cases and 10,475 controls) followed by validation genotyping in an independent cohort (n=3,716 cases and 4,261 controls). We discover and validate six previously unknown risk loci for PBC (Pcombined<5 Ă 10(-8)) and used pathway analysis to identify JAK-STAT/IL12/IL27 signalling and cytokine-cytokine pathways, for which relevant therapies exist
Multidifferential study of identified charged hadron distributions in -tagged jets in proton-proton collisions at 13 TeV
Jet fragmentation functions are measured for the first time in proton-proton
collisions for charged pions, kaons, and protons within jets recoiling against
a boson. The charged-hadron distributions are studied longitudinally and
transversely to the jet direction for jets with transverse momentum 20 GeV and in the pseudorapidity range . The
data sample was collected with the LHCb experiment at a center-of-mass energy
of 13 TeV, corresponding to an integrated luminosity of 1.64 fb. Triple
differential distributions as a function of the hadron longitudinal momentum
fraction, hadron transverse momentum, and jet transverse momentum are also
measured for the first time. This helps constrain transverse-momentum-dependent
fragmentation functions. Differences in the shapes and magnitudes of the
measured distributions for the different hadron species provide insights into
the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any
supplementary material and additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb
public pages
Study of the decay
The decay is studied
in proton-proton collisions at a center-of-mass energy of TeV
using data corresponding to an integrated luminosity of 5
collected by the LHCb experiment. In the system, the
state observed at the BaBar and Belle experiments is
resolved into two narrower states, and ,
whose masses and widths are measured to be where the first uncertainties are statistical and the second
systematic. The results are consistent with a previous LHCb measurement using a
prompt sample. Evidence of a new
state is found with a local significance of , whose mass and width
are measured to be and , respectively. In addition, evidence of a new decay mode
is found with a significance of
. The relative branching fraction of with respect to the
decay is measured to be , where the first
uncertainty is statistical, the second systematic and the third originates from
the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb
public pages
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
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