Matching Items (74)
Description
Minimal information exists concerning dual language acquisition of three-year-old dual language learners (DLLs) during their first school experience and first systematic exposure to English. This study examined the Spanish and early English language development of young DLLs in the context of standardized measures and a story retell task. Participants included eight Spanish-English DLLs (7 females, 1 male, M age = 3 years, 8 months) attending Head Start, and their classroom teachers. Outcome measures for the children included composite and scaled scores on the Clinical Evaluation of Language Fundamentals Preschool-2 Spanish (CELF Preschool-2 Spanish; Wiig, Secord & Semel, 2009) and the parallel English measure (CELF Preschool-2; Wiig, Secord & Semel, 2005), and measures of lexical (NVT, NNVT, TNV, NW, NDW, TNW and TTR) and grammatical (MLUw) development. Proportion of classroom teachers' and paraprofessionals' Spanish, English and mixed language use was measured to contextualize the children's learning environment with regard to language exposure. Children's mean standardized Spanish scores at school entry were not significantly different from their mean scores in May; however, an increase in total number of verb types was observed. Children's English receptive, content, and structure mean standardized scores in May were significantly higher than their scores at school entry. Children were exposed to a high proportion of mixed language use and disproportionate amounts of English and Spanish exclusively. Children's performance was highly variable across measures and languages. The findings of the current study provide a reference point for future research regarding language development of three-year-old Spanish-English dual language learners.
ContributorsDubasik, Virginia L (Author) / Wilcox, M J (Thesis advisor) / Ingram, David (Committee member) / Lafferty, Addie (Committee member) / Macswan, Jeff (Committee member) / Arizona State University (Publisher)
Created2011
Description
The purpose of this research is to investigate the types of play and the use of play within daily routines that early intervention providers, parents of children with disabilities, and parents of typically developing children use with children under the age of three. It is important to research the current use of play by parents and providers to explore how play can be used most effectively to help children learn in other developmental domains. Two online surveys were created and distributed, one for early intervention providers and one for parents. The data from the surveys suggests early intervention providers and both parent groups engage in a wide variety of play activities. However, parents of children with disabilities reported using substantially more technology and videos than parents of typically developing children or early intervention providers. The data from the study also indicates that play is incorporated into daily routines by both providers and parents. Both parent groups reported more frequent use of play in most routines than providers. The findings of this study reveal that early intervention providers and parents of typically developing children are more closely aligned in the play activities they utilize with parents of children with disabilities being the most dissimilar. When looking at routines, both parent groups are more similar in their frequency of use of play in daily routines, while early intervention providers generally use routines less frequently than parents. Future studies could look at which play activities are most beneficial for children as well as why providers report using routine less than parents.
ContributorsNorcross, Meghan (Co-author) / Cantrill, Kathryn (Co-author) / Wilcox, M. Jeanne (Thesis director) / Cosgrove Greer, Dawn (Committee member) / Brown, Jean (Committee member) / Barrett, The Honors College (Contributor) / Department of Speech and Hearing Science (Contributor)
Created2013-05
Description
Frequency effects favoring high print-frequency words have been observed in frequency judgment memory tasks. Healthy young adults performed frequency judgment tasks; one group performed a single task while another group did the same task while alternating their attention to a secondary task (mathematical equations). Performance was assessed by correct and error responses, reaction times, and accuracy. Accuracy and reaction times were analyzed in terms of memory load (task condition), number of repetitions, effect of high vs. low print-frequency, and correlations with working memory span. Multinomial tree analyses were also completed to investigate source vs. item memory and revealed a mirror effect in episodic memory experiments (source memory), but a frequency advantage in span tasks (item memory). Interestingly enough, we did not observe an advantage for high working memory span individuals in frequency judgments, even when participants split their attention during the dual task (similar to a complex span task). However, we concluded that both the amount of attentional resources allocated and prior experience with an item affect how it is stored in memory.
ContributorsPeterson, Megan Paige (Author) / Azuma, Tamiko (Thesis advisor) / Gray, Shelley (Committee member) / Liss, Julie (Committee member) / Arizona State University (Publisher)
Created2013
Description
Two groups of cochlear implant (CI) listeners were tested for sound source localization and for speech recognition in complex listening environments. One group (n=11) wore bilateral CIs and, potentially, had access to interaural level difference (ILD) cues, but not interaural timing difference (ITD) cues. The second group (n=12) wore a single CI and had low-frequency, acoustic hearing in both the ear contralateral to the CI and in the implanted ear. These `hearing preservation' listeners, potentially, had access to ITD cues but not to ILD cues. At issue in this dissertation was the value of the two types of information about sound sources, ITDs and ILDs, for localization and for speech perception when speech and noise sources were separated in space. For Experiment 1, normal hearing (NH) listeners and the two groups of CI listeners were tested for sound source localization using a 13 loudspeaker array. For the NH listeners, the mean RMS error for localization was 7 degrees, for the bilateral CI listeners, 20 degrees, and for the hearing preservation listeners, 23 degrees. The scores for the two CI groups did not differ significantly. Thus, both CI groups showed equivalent, but poorer than normal, localization. This outcome using the filtered noise bands for the normal hearing listeners, suggests ILD and ITD cues can support equivalent levels of localization. For Experiment 2, the two groups of CI listeners were tested for speech recognition in noise when the noise sources and targets were spatially separated in a simulated `restaurant' environment and in two versions of a `cocktail party' environment. At issue was whether either CI group would show benefits from binaural hearing, i.e., better performance when the noise and targets were separated in space. Neither of the CI groups showed spatial release from masking. However, both groups showed a significant binaural advantage (a combination of squelch and summation), which also maintained separation of the target and noise, indicating the presence of some binaural processing or `unmasking' of speech in noise. Finally, localization ability in Experiment 1 was not correlated with binaural advantage in Experiment 2.
ContributorsLoiselle, Louise (Author) / Dorman, Michael F. (Thesis advisor) / Yost, William A. (Thesis advisor) / Azuma, Tamiko (Committee member) / Liss, Julie (Committee member) / Arizona State University (Publisher)
Created2013
Description
Spanish-speaking (SS) dual language learners (DLLs) have shown differential developmental profiles of the native language (L1). The current study examined whether or not the Spanish acquisition profile, specifically accusative clitics, in predominantly SS, Latino children continues to develop in an English-language contact situation. This study examined (1) accuracy rates of clitic production, total substitutions, and total omissions across 5-, 6-, and 7-year-olds; (2) accuracy rates of clitic production, total substitutions, and total omissions across low and high English proficiency groups; and (3) whether or not there was a trend to use the default clitic lo in inappropriate contexts. Seventy-four SS children aged 5;1 to 7;11 participated in a clitic elicitation task. Results indicated non-significant effects of age and proficiency level on the accuracy of clitic production. These results suggest dual language learners are in an environment that does not foster the maintenance of the L1, at least in the accuracy of accusative clitic pronouns.
ContributorsFigueroa, Megan Danielle (Author) / Restrepo, María A (Thesis advisor) / Gelderen, Elly van (Committee member) / Ingram, David (Committee member) / Arizona State University (Publisher)
Created2012
Description
Often termed the "gold standard" in the differential diagnosis of dysarthria, the etiology-based Mayo Clinic classification approach has been used nearly exclusively by clinicians since the early 1970s. However, the current descriptive method results in a distinct overlap of perceptual features across various etiologies, thus limiting the clinical utility of such a system for differential diagnosis. Acoustic analysis may provide a more objective measure for improvement in overall reliability (Guerra & Lovely, 2003) of classification. The following paper investigates the potential use of a taxonomical approach to dysarthria. The purpose of this study was to identify a set of acoustic correlates of perceptual dimensions used to group similarly sounding speakers with dysarthria, irrespective of disease etiology. The present study utilized a free classification auditory perceptual task in order to identify a set of salient speech characteristics displayed by speakers with varying dysarthria types and perceived by listeners, which was then analyzed using multidimensional scaling (MDS), correlation analysis, and cluster analysis. In addition, discriminant function analysis (DFA) was conducted to establish the feasibility of using the dimensions underlying perceptual similarity in dysarthria to classify speakers into both listener-derived clusters and etiology-based categories. The following hypothesis was identified: Because of the presumed predictive link between the acoustic correlates and listener-derived clusters, the DFA classification results should resemble the perceptual clusters more closely than the etiology-based (Mayo System) classifications. Results of the present investigation's MDS revealed three dimensions, which were significantly correlated with 1) metrics capturing rate and rhythm, 2) intelligibility, and 3) all of the long-term average spectrum metrics in the 8000 Hz band, which has been linked to degree of phonemic distinctiveness (Utianski et al., February 2012). A qualitative examination of listener notes supported the MDS and correlation results, with listeners overwhelmingly making reference to speaking rate/rhythm, intelligibility, and articulatory precision while participating in the free classification task. Additionally, acoustic correlates revealed by the MDS and subjected to DFA indeed predicted listener group classification. These results beget acoustic measurement as representative of listener perception, and represent the first phase in supporting the use of a perceptually relevant taxonomy of dysarthria.
ContributorsNorton, Rebecca (Author) / Liss, Julie (Thesis advisor) / Azuma, Tamiko (Committee member) / Ingram, David (Committee member) / Arizona State University (Publisher)
Created2012
Description
The increase of Traumatic Brain Injury (TBI) cases in recent war history has increased the urgency of research regarding how veterans are affected by TBIs. The purpose of this study was to evaluate the effects of TBI on speech recognition in noise. The AzBio Sentence Test was completed for signal-to-noise ratios (S/N) from -10 dB to +15 dB for a control group of ten participants and one US military veteran with history of service-connected TBI. All participants had normal hearing sensitivity defined as thresholds of 20 dB or better at frequencies from 250-8000 Hz in addition to having tympanograms within normal limits. Comparison of the data collected on the control group versus the veteran suggested that the veteran performed worse than the majority of the control group on the AzBio Sentence Test. Further research with more participants would be beneficial to our understanding of how veterans with TBI perform on speech recognition tests in the presence of background noise.
ContributorsCorvasce, Erica Marie (Author) / Peterson, Kathleen (Thesis director) / Williams, Erica (Committee member) / Azuma, Tamiko (Committee member) / Barrett, The Honors College (Contributor) / Department of Speech and Hearing Science (Contributor)
Created2015-05
Description
Early childhood language environment has an important effect on developmental language outcomes. Intervention and parent training for children who have speech and language delays often focuses on the implementation of strategies designed to enhance the language environment. With quantitative information on different aspects of the language environment, intervention and parent training can be better tailored to the needs of each child and can be made easier for parents to implement. This study uses the Language Environmental Analysis (LENA) system to explore differences in language environment across participants, settings (toddler group and home), and activities (general, outside, and organized playtime, story time, meal time, naptime, transition, public outside visits, travel time, TV time, personal care, and other). Participants were five children, ages 20-35 months who had speech and language delays. The children wore the LENA for one day and the adult words to the child, child vocalizations and turn-taking were analyzed during each activity and setting. We found that general and outside playtime activities, meal time, and personal care times were activities that consistently resulted in high levels of child vocalization across participants. Structured play and story time did not result in high levels of child vocalization. We also found that, for some children, there were differences in the quantity of adult language addressed to the child in language group and home settings. These findings have implications for training parents to provide language rich environments for their child.
ContributorsGlavee, Kelsey Marie (Author) / Scherer, Nancy (Thesis director) / Greer, Dawn (Committee member) / Bacon, Cathy (Committee member) / Barrett, The Honors College (Contributor) / Department of Speech and Hearing Science (Contributor) / Department of Psychology (Contributor)
Created2015-05
Description
Preschoolers' vocabularies are an important component of their receptive and expressive language skills. This study was designed to catalog preschoolers' expressive vocabularies to provide an accurate estimate of how many words and which words seven preschoolers knew. In this study a LENA digital recorder was used to record language samples of the children (age range 40 months to 69 months) over 4-6 days. Their language samples were transcribed and individual root words were extracted. The children spoke an average of 1,698 unique words (range 1,522 \u2014 1,957 words). There were 539 words produced by all of the children in the study as well as 820 words produced by 6 of the 7 children. These data provide preliminary information that will be useful for designing a larger, more comprehensive study of children's vocabulary with the goal of teachers and speech-language pathologists being able to use this information to determine if a child's vocabulary is smaller than other children when they enter elementary school. This can inform assessment and intervention decisions as well as provide guidance to preschool curriculum developers.
ContributorsStanovich, Laura Ashlee (Author) / Gray, Shelley (Thesis director) / Restrepo, M. Adelaida (Committee member) / Department of Speech and Hearing Science (Contributor) / Sanford School of Social and Family Dynamics (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12
Description
This creative project is a children's book entitled Sheldon the Shy Tortoise. Accompanying the story is a literature review of the research on childhood shyness. The purpose of the project is to gain a better of understanding of shyness in childhood. Topics covered in the literature review include risk factors and causes, negative social and behavioral effects, impact on academics, and treatment options. Using this information, the children's book was written. It aims to be fun for children to read while also providing insight and encouragement into some of the problems related to being shy. The story features animal characters and a relatively simple plot so it is easily understandable by the target audience of late-preschool and early-elementary children. The main character, Sheldon the tortoise, is often physically and metaphorically "stuck in his shell". He wants to participate in social activities but is afraid to do so. Through a series of events and interactions, Sheldon starts to come out of his shell in every sense of the phrase. The book is illustrated using photographs of hand-crocheted stuffed animals representing each of the characters. By incorporating scholarly research into the writing process, children will hopefully be able to gain an understanding of their shyness and ways to help decrease it. Teachers should be able to better understand their shy students and understand some of the unique challenges of working with shy children. This creative project helps convey necessary information to children and families during a critical period of development.
ContributorsRyan, Amanda (Author) / Hansen, Cory (Thesis director) / Bernstein, Katie (Committee member) / Department of Speech and Hearing Science (Contributor) / Sanford School of Social and Family Dynamics (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05