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The main purpose of this study was to investigate the effects of form-focused instruction (FFI) on prosody with or without self-assessment on the prosodic and global aspects of L2 speech by Japanese EFL learners using a pre-post design. In addition, native English speaking (NS) and non-native English speaking (NNS) raters with high levels of English proficiency were compared to examine the influence of raters’ L1 backgrounds on their comprehensibility ratings. Sixty-one Japanese university students from four intact English presentation classes participated in the study. The comparison group (n = 16) practiced making one-minute speeches in class (45 minutes x 8 times) without explicit instruction on prosody, while the two experimental groups (n = 17 for the FFI-only group; n = 28 for the FFI + SA group) received FFI on word stress, rhythm, and intonation, practiced the target prosodic features in communicative contexts, and received metalinguistic feedback from the instructor. In total, the experimental groups received six-hours of instruction in class, which was comparable to the comparison group. Additionally, the experimental groups completed homework three times; only the FFI + SA group recorded their reading performance and self-assessed it in terms of word stress, rhythm, and intonation. Three oral tasks were employed to elicit the participants’ speech before and after the treatment: reading aloud, one-minute speech, and picture description. The speech samples were rated for comprehensibility by NS and NNS raters and were also analyzed with four prosodic measurements: word stress, rhythm, pitch contour, and pitch range. Instructional effects on prosody were observed clearly. The FFI-only group improved their controlled production of rhythm and pitch contour, while the FFI + SA group significantly improved all of the prosodic features except pitch range. Moreover, the instructional gains for the FFI + SA group were not limited to the controlled task but transferred to the less-controlled tasks. The results showed differential instructional effects on the four prosodic aspects. The FFI in this study did not help the participants widen their pitch range. The FFI on prosody, which was focused on the cross-linguistic differences between Japanese and English, tended to be more effective in terms of improving rhythm and pitch contour, which were categorized as rule-based, than an item-based feature, word stress. The study offered mixed results regarding instructional effects on comprehensibility. The FFI-only group did not significantly improve comprehensibility despite their significant prosodic improvements on the reading aloud task. Their significant comprehensibility growth on the picture description task was not because of the development of prosody, but of other linguistic variables that influence comprehensibility such as speech rate. The FFI + SA group made significant gains for comprehensibility on the three tasks, but the effect sizes were small. This finding indicated that the effects of FFI with self-assessment on comprehensibility were limited due to the multi-faceted nature of comprehensibility. The data elicited from the post-activity questionnaires and students’ interviews revealed that not all the participants in the FFI + SA group reacted positively to the self-assessment practice. Individual differences such as previous learning experience and self-efficacy appeared to influence the learners’ perceptions of the self-assessment practice and possibly their instructional gains. The two groups of raters, L1 English raters (n = 6) and L2 English raters with advanced or native-like English proficiency (n = 6) did not differ in terms of consistency and severity. These findings indicated that NNS raters with high English proficiency could function as reliably as NS raters; however, the qualitative data revealed that the NS raters tended to be more sensitive to pronunciation, especially at the segmental level, across the three tasks compared to the NNS raters. This study provides evidence that FFI, especially when it is reinforced by self-assessment, has pedagogical value; it can improve learners’ production of English prosody in controlled and less-controlled speech, and these gains can in turn contribute to enhanced L2 comprehensibility. / Teaching & Learning

The purpose of this study was to examine the following prosodic elements: speech rate, turn-taking latency, number of interruptions, and utterance duration across two groups' neurotypical and autistic young adults. Furthermore, the end goal of this study is to help provide a baseline and clinical application of prosodic differences between autistic and neurotypical adults. Speech samples were collected from 11 neurotypical and 11 autistic young adults from the ages of 18-26. Speech samples were recorded responses from a 10-minute interview between two research assistants and the autistic or neurotypical individual. Using Praat software, speech samples were analyzed and used to calculate speech rate, utterance duration, turn-taking latency, and the number of interruptions for each subject. Across the four prosodic elements, there were significant differences between the autistic and neurotypical groups. The neurotypical group exhibited significantly higher speech and interruption rates when compared to the autistic group. Whereas, the autistic group displayed longer turn-taking latency periods and longer utterance durations. Across all conditions, there were no significant difference between biological sex or effect of familiarity within the autistic and neurotypical groups. Results of this study provide clinicians and researchers a baseline of prosodic differences found between autistic and neurotypical individuals. Future research is needed to better understand how these findings might improve the assessment and treatment of autistic individuals.

Organized as a set of three manuscripts, this research draws attention to the academic learning experiences for adolescents with particular attention to adolescents with limited reading proficiency and the use of single case design research as a viable option for discovering solutions to a persisting research-to-practice gap in education. Data analyses included a systematic literature review with findings synthesized into themes using qualitative methods, a multiple probe single case design, a non-parametric statistical analysis, and effect size calculations. The first article is a systematic literature review on the relationship between oral reading fluency and reading comprehension for adolescent with limited reading proficiency (ALRP) in grades 6-12. The results of 22 studies were synthesized into five themes and results suggest that knowledge of an adolescent's ORF provides helpful information about his or her reading profile, but is not sufficient to evaluate instructional needs nor measure progress. The article concludes with a discussion on the envelopment of ORF within the Simple View of Reading specifically for adolescent readers as well as implications for practitioners, researchers, policymakers, and assessment developers. The second article presents the findings from a study on the influence of a word level intervention on multiple reading component skills. Six students in two different intervention classes in Virginia participated. The primary analysis was based on a single case design, specifically a multiple probe across participants and settings design. Visual analyses of baseline and intervention phase data indicated a functional relationship between the word level intervention and multiple reading component skills. Statistical analysis (Tau-U) supported this finding with aggregated small effect sizes (0.14 to 0.54) for word identification, accuracy, and automaticity, and one moderate effect size (.70) for prosody. Secondary analysis showed a significant effect for improved strategy knowledge and skill with a 0.90 effect size, but no statistically significant group effects for silent reading fluency and sentence comprehension. The third manuscript is a broad overview of adolescent literacy instructional recommendations and presents a vision for how all teachers contribute to the development of strategic learners when they support content learning through literacy-rich classroom environments. / Doctor of Philosophy / This research draws attention to the academic learning experiences for adolescents, with particular attention to adolescents with limited reading proficiency. The first article examines the relationship between oral reading fluency and reading comprehension for adolescent with limited reading proficiency (ALRP) in grades 6-12. Results suggest that knowledge of an adolescent's oral reading fluency (ORF) provides helpful information but is not sufficient to evaluate instructional needs nor measure progress. Discussion includes where ORF fits within the Simple View of Reading theory specifically for adolescent readers as well as implications for practitioners, researchers, policymakers, and assessment developers. The second article presents findings from a study on the influence of a reading intervention on multiple reading component skills of adolescents with limited reading proficiency. Six students in two different intervention classes in Virginia participated. Visual analyses of individual baseline and intervention phase data indicated a functional relationship between the reading intervention and multiple reading component skills. Additionally, there was a significant group effect for improved strategy knowledge and skill, but no statistically significant group effects for silent reading fluency nor sentence comprehension. Discussion includes limitations and implications for future research, intervention teacher practice and school improvement leaders. The third article gives a broad overview of adolescent literacy instructional recommendations and presents a vision for how all teachers contribute to the development of strategic learners when they support content learning through literacy-rich classroom environments.

Over the past decades a considerable number of works have observed differences in the phonetic realization of nouns and verbs. The guiding question in most relevant research is whether such differences are caused by grammatical category per se, or are triggered by more general processes of phonetic implementation that impact nouns and verbs differently. Most studies argue for the latter and focus on one particular process or variable, which is advocated to be responsible for the acoustic differences observed. Among the processes mentioned are pre-boundary lengthening, accentuation, and frequency-induced reduction. Due to the focus on monofactorial explanations, an overview and contextualization of the different processes interacting with the noun-verb distinction is yet missing. The present paper aims to fill this gap. This goal is pursed by providing an in-depth discussion of how grammatical category interacts with a number of different processes that affect acoustic realization. To that end results from the literature on the topic are synthesized with new acoustic analyses of noun-verb homophones from spontaneous speech. The analysis shows that differences in acoustic realization between nouns and verbs are caused by the complex interplay of a number of different processes, defying simple, monofactorial explanations.

Natural speech contains a wealth of information relevant to understanding cognitive and affective psychological processes, which are reflected in both prosodic and semantic channels of communication. While differences in semantic channels have been demonstrated among psychopathic versus non-psychopathic individuals, research on the role of prosody in psychopathy is scant. The Computerized Assessment of Natural Speech protocol provides adetailed assessment of macroscopic-level prosody variables related to underlying psychological processes that have been linked to psychopathological conditions. Psychopathy is a condition that involves a number of disruptions in cognitive and affective processes, which theoretically can be tied to various aspects of speech. The present study provides a novel contribution by examining natural speech output in an offender sample in the context of a clinical interview (Psychopathy Checklist – Revised). More specifically, the present study examined variance in prosody across segments of the PCL-R interview designed to elicit both positively and negatively valenced emotional content, across high and low levels of subjective arousal, in psychopathic (n = 49) and non-psychopathic (n = 44) male offenders who were similar in terms of age, education, race/ethnicity, and IQ. Three-factor mixed MANOVAs (Group x Valence x Arousal) were conducted to evaluate differences in prosodic speech displayed by the offenders. Results indicated significant interactions between psychopathic and non-psychopathic offenders across valence and arousal conditions in terms of percentage of silence, average pause length, longest pause length, average within-utterance variation in subjectively defined pitch and articulation variables, and average rate of change in articulation across speech sample. Implications and future directions for research are discussed.