A compelling demonstration of implicit learning is the human ability to unconsciously detect and internalize statistical patterns of complex environmental input. This ability, called statistical learning, has been investigated in people with dyslexia using various tasks in different orthographies. However, conclusions regarding impaired or intact statistical learning in dyslexia remain mixed. This study conducted a systematic literature search of published and unpublished studies that compared statistical learning between people with and without dyslexia using different learning paradigms in different orthographies. We identified 49 papers consisting of 59 empirical studies, representing the data from 1,259 participants with dyslexia and 1,459 typically developing controls. The results showed that, on average, individuals with dyslexia performed worse in statistical learning than age-matched controls, regardless of the learning paradigm or orthography (average weighted effect size d = 0.47, 95% confidence interval [0.36, 0.59], p < .001). Meta-regression analyses further revealed that the heterogeneity of effect sizes between studies was significantly explained by one reader characteristic (i.e., verbal IQ) but no task characteristics (i.e., task paradigm, task modality, and stimulus type). These findings suggest domain-general statistical learning weakness in dyslexia across languages, and support the need for a new theoretical model of statistical learning and reading, that is, the SLR model, which elucidates how reader and task characteristics are regulated by a multicomponent memory system when establishing statistically optimal representations for deep learning and reading.

This study investigated the similarities and differences in perception of Cantonese tones and English stress patterns by Cantonese-English bilingual children, adults, and English monolingual adults. All three groups were asked to discriminate pairs of syllables that minimally differed in either Cantonese tone or in English stress. Bilingual children’s performance on tone perception was comparable to their performance on stress perception. By contrast, bilingual adults’ performance on tone perception was lower than their performance on stress perception, and there was a similar pattern in English monolingual adults. Bilingual adults tended to perform better than English monolingual adults on both the tone and stress perception tests. A significant correlation between tone perception and stress perception performance was found in bilingual children but not in bilingual adults. All three groups showed lower accuracy in the high rising-low rising contrast than any of the other 14 Cantonese tone contrasts. The acoustic analyses revealed that average F0, F0 onset, and F0 major slope were the critical acoustic correlates of Cantonese tones, whereas multiple acoustic correlates were salient in English stress, including average F0, spectral balance, duration and intensity. We argue that participants’ difficulty in perceiving high rising-low rising contrasts originated from the contrasts’ similarities in F0 onset and average F0; indeed the difference between their major slopes was the only cue with which to distinguish them. Acoustic-perceptual correlation analyses showed that although the average F0 and F0 onset were associated with tone perception performance in all three groups, F0 major slope was only associated with tone perception in the bilingual adult group. These results support a dynamic interactive account of suprasegmental speech perception by emphasizing the positive prosodic transfer between Cantonese tone and English stress, and the role that level of bilingual language experience and age play in shaping suprasegmental speech perception.

Background The ongoing COVID-19 pandemic has resulted in the suspension of face-to-face classes and a considerable increase in the use of telepractice services in speech-language pathology. However, little is known about parents’ and students’ satisfaction with telepractice services and their preferences for different service delivery modes. These factors may affect therapy effectiveness and the future adoption of telepractice. Objective We evaluated students’ and parents’ perceptions of telepractice efficacy and their preferences for different service delivery modes (ie, on-site practice vs telepractice). We also identified factors that affect parents’ and students’ preferences for different service delivery modes during the COVID-19 pandemic. Methods A 19-question survey on telepractice satisfaction and preferences was administered to 41 Hong Kong Chinese students and 85 parents who received telepractice services from school-based speech-language pathologists during the COVID-19 class suspension period. In addition to providing demographic information and data on the implementation of telepractice services, all participants were asked to rate their perceptions of the efficacy of telepractice services and compare on-site practices to telepractice on a 5-point Likert scale (ie, 1=strongly disagree/prefer the use of on-site speech-language therapy services and 5=strongly agree/prefer the use of telepractice services). Results Despite the fact that telepractice efficacy was highly rated by parents (95% CI 3.30-3.66) and students (95% CI 3.21-3.76), both groups believed that telepractice was less effective than on-site practices (parents: 95% CI 2.14-2.52; students: 95% CI 2.08-2.65). Moreover, parents preferred on-site practices over telepractice (95% CI 2.04-2.43), whereas students did not prefer one mode of practice over the other (95% CI 2.74-3.41). A significant association between telepractice efficacy and a preference for telepractice services was found only among the students (τ=.43, P<.001), not the parents (τ=.07; P=.44). Conclusions Although telepractice is an acceptable alternative service delivery option for providing speech and language therapy services to school-aged individuals, speech-language therapists and parents must play a more proactive role in telepractice services to facilitate effective communication between clinicians and parents.