Purpose: As a class, fricatives are more "resistant" to consonant-vowel coarticulation than other English sounds. This study investigates the relative coarticulatory resistance of /[voiceless dental fricative], s, [voiceless palato-alveolar fricative]/ in child and adult speech to better understand the acquisition of individuated speech…

The purpose of this study was to examine the relations among phonological skills, reading fluency, and reading comprehension across reading modality (oral and silent) for a sample of students (N = 121) in grades 2-5 who have been diagnosed with dyslexia. Participants were administered text-level oral and silent reading fluency and comprehension…

Background: Motor skill assessment is time-consuming and some difficulties are inherent in the administration of motor tests, especially in children with neurodevelopment disorders. Purpose: This study aimed to develop and investigate the face, content, and criterion validity of a Motor Skills Sequential Pictures (MSSP) for the Test of Gross Motor…

This study examined how L2 English speakers interpreted the notion of native English speakers (NESs) and nonnative English speakers (NNESs) and whether nativeness would influence their self-perception and speech production. It aimed at filling the following research gaps. First, limited studies have explored how L2 English speakers view the other…

Generalization is the ability to apply regularities to novel instances, for example, correctly guessing that the plural for the novel English word 'wug' should be 'wugs'. Early language learners make overgeneralization errors like 'mouses', applying regularities beyond their attested uses. Theories concerned with the question of how learners learn…

This dissertation describes a practitioner's design-based development of a prototype chatbot to guide students in learning biological concepts of genetic mutations and protein synthesis. This chatbot's architecture provides learning activities, feedback, and support throughout a series of short, connected lessons. The chatbot is designed to…

Researchers suggest that while intellectually gifted children might not always display adequate focus on their general life, they perform very well on experimental attentional tasks. The current study used inattentional blindness (IB) paradigm to understand better the attentional abilities of intellectually gifted children. Specifically, we…

Allied health professionals (AHPs) are trusted sources of information and intervention for clients with autism spectrum disorder. However, the level of implementation of empirically-supported therapies and the accuracy of the knowledge they use to inform intervention selection is largely unknown. The present study explored the accuracy of AHPs'…

In this study, we investigated whether people who hold more correct beliefs about verbal cues to deception are also better lie detectors. We investigated police officers and undergraduates' beliefs about (i) cues to deception via an open-ended question and (ii) 17 specific verbal cues, after which participants were asked to judge the truthfulness…

Percentage study weights in meta-analysis reveal the contribution of each study toward the overall summary results and are especially important when some studies are considered outliers or at high risk of bias. In meta-analyses of test accuracy reviews, such as a bivariate meta-analysis of sensitivity and specificity, the percentage study weights…

Individuals with autism spectrum disorder (ASD) have difficulties with social interaction and communication. First-hand accounts written by individuals with ASD have shown the existence of other atypical characteristics such as difficulties with body awareness. However, few studies have examined whether such atypicalities are found more generally…

We examined the effect of local or global processing bias (in the Navon task) on the acquisition of spatial knowledge from maps and route videos. Before spatial learning, participants completed a 5-min Navon task (biased toward global or local stimuli). After participants studied a map or route video, route knowledge was measured using a route…

For well over a century, scientists have investigated individual differences in performance. The majority of studies have focused on either differences in practice, or differences in cognitive resources. However, the predictive ability of either practice or cognitive resources varies considerably across tasks. We are the first to examine task…

A simple throwing task is described to illustrate various aspects of projectile motion. The task was to throw a tennis ball in a waste paper bin about 2 m away. Success depends on skill, but it also depends on the physics of the problem. If the ball is thrown underarm, then success depends primarily on the throw speed, which must be controlled to…

Background: Emergency contraception (EC) is a highly effective form of birth control that may lower rates of unintended pregnancy among young women. But efforts to disseminate EC to women are hampered by misinformation and inadequate information. Purpose: The purpose of this study was to determine the sources from which young women learn about EC…