To evaluate which features of spoken language aid infant word learning, a corpus of infant-directed speech (M. R. Brent & J. M. Siskind, 2001) was characterized on several linguistic dimensions and statistically related to the infants' vocabulary outcomes word by word. Comprehension (at 12 and 15 months) and production (15 months) were…

This article analyses how a set of psycholinguistic factors may account for children's lexical development. Age of acquisition is compared to a measure of lexical development based on vocabulary size rather than age, and robust regression models are used to assess the individual and joint effects of word class, frequency, imageability and…

This study investigates 62 EFL young adults' vocabulary learning rates immediately after reading ten graded readers, and their vocabulary decay rates after a three-month period. The participants were divided into two relative levels: higher (n = 31) and lower (n = 31). One hundred target words were semi-randomly selected from the reading texts and…

A word learning paradigm was used to teach children novel words that varied in phonotactic probability and neighborhood density. The effects of frequency and density on speech production were examined when phonetic forms were nonreferential (i.e., when no referent was attached) and when phonetic forms were referential (i.e., when a referent was…

It is difficult for most of the second language learners in Malaysia to function proficiently in English language due to limited vocabulary knowledge. It has also been challenging for TESL graduates to fit in as ENP teachers due to the lack of specialized vocabulary knowledge in nursing field. Thus, a course books has always been a highly…

This study investigated Vietnamese EFL learners' knowledge of verb-noun and adjective-noun collocations at the first three 1,000 word frequency levels, and the extent to which five factors (node word frequency, collocation frequency, mutual information score, congruency, and part of speech) predicted receptive knowledge of collocation. Knowledge…

Testing learners' English proficiency is central to university English classes in Japan. This study developed and implemented a set of parallel online receptive aural and visual vocabulary tests that would predict learners' English proficiency. The tests shared the same target words and choices--the main difference was the presentation of the…

The primary aim of this investigation was to determine what combination of target word variables (frequency, patternedness, length, cognateness, lexicalization) could best predict the difficulty of incidentally acquiring vocabulary through reading. A group of adult English First Language (EL1) (n = 20) and adult English as a Foreign Language (EFL)…

Previous studies have shown that intentional learning through explicit instruction is effective for the acquisition of collocations in a second language (L2) (e.g. Peters, 2014, 2015), but relatively little is known about the effectiveness of incidental approaches for the acquisition of L2 collocations. The present study examined the incidental…

Intervention exercises have tended to be limited to restricted controlled output in studies related to second language (L2) learners' acquisition of written academic formulaic sequences (FSs), while measurement of use has been drawn from freer output (AlHassan & Wood, 2015; Jones & Haywood, 2004; Peters & Pauwels, 2015). The current…

This study compares the impact of second language (L2) reading and listening on the incidental acquisition and retention of five dimensions of vocabulary knowledge--spoken form, written form, part of speech, syntagmatic association, and form-meaning connection--at the level of recognition (form-meaning connection was measured also at the level of…

This research sought to determine the level of productive vocabulary knowledge of the students grouped according to type of school and curriculum year level; performance of the students in the vocabulary test categorized according to frequency levels; their breadth of productive vocabulary knowledge related to type of school enrolled in,…

This article reports the results of two studies on the vocabulary growth of advanced learners of English as a foreign language in an English-medium degree programme. Growth in learners' written receptive and productive vocabularies was investigated in one cross-sectional and one longitudinal study over three years. The effect of word frequency on…

This study investigated (1) the extent of vocabulary learning through reading and listening to 10 graded readers, and (2) the relationship between vocabulary gain and the frequency and distribution of occurrence of 100 target words in the graded readers. The experimental design expanded on earlier studies that have typically examined incidental…

Though textbooks are one of the main vocabulary input resources for domestic college students and core contents of learning and testing (Liu, 2013), few empirical studies are done to evaluate learning opportunities provided by textbooks. This empirical study is designed to analyze what learning opportunity is provided in a currently used series of…