2018 ASHA CONVENTION PROGRAM BOOK • 237 TECHNICAL RESEARCH SESSIONS • FRIDAY DAY/TIME/ LOCATION/ ROOM SESSION/ AREA/ CONTENT/ LEVEL/TYPE TITLE/ AUTHOR(S) ABSTRACT FR 10:30AM-11:00AM Westin, Galleria Tech G 4614 SLP LITP Intermediate Research More Treatment is Better Only for Children With Mild Autism Symptoms Paul Yoder, Vanderbilt U; Sally Rogers, MIND Inst; Annette Estes, U of Washington This internally-valid experiment demonstrated that 25 hours/week was better than 15 hours/week of early intervention only in children with mild autism symptoms. Intensity of treatment did not matter for children with severe autism. The findings support the validity of a six-minute communication sample given monthly as a method of monitoring progress in children with ASD. FR 11:00AM-11:30AM Westin, Galleria Tech G 4615 SLP LITP Advanced Research Preliminary Evidence That Production Practice Outweighs Input Frequency Manipulations in a Speech Accuracy Task Peter Richtsmeier, Oklahoma St U; Paige Burgess, Oklahoma St U We present a statistical learning experiment examining speech in three- and four-year-olds. Children produced target nonwords that were familiarized using four levels of input frequency, and with or without talker variability. Preliminary results: No significant effects of either input variable, but participants were significantly more accurate for later productions. Production practice may sometimes predominate over manipulations of children’s input. FR 3:45PM-4:15PM Westin, Galleria Tech C 4616 GI LPI Intermediate Research The ELKS-M: A Measure of Morphological Knowledge Hannah Krimm, Vanderbilt U; Clare Melanie Schuele, Vanderbilt U Sch of Medicine The purpose of this study was to create a measure of derivational morphology knowledge for educators. School speech-language pathologists answered questions designed to tap implicit and explicit morphological knowledge. We conducted item analysis to select a subset of items with desirable item difficulty estimates and strong item discrimination indices. We discuss next steps for validation and use with children. FR 4:15PM-4:45PM Westin, Galleria Tech C 4617 GI LPI Introductory Prof Educ Mass School-Based Speech-Language Pathologists’ Experiences & Perceptions of Educator Eval Molly Corcoran, Revere Public Schs Nationwide school-based speech-language pathologists (SLPs) are frequently included in educator evaluations systems. It is of concern to the SLP community that research documenting how school-based SLPs understand, navigate, and participate in such systems is limited. The goal of this study was to examine SLPs’ experiences with educator evaluation within the context of the Massachusetts educator evaluation system. FR 5:00PM-5:30PM Westin, Galleria Tech D 4618 SLP LAI Intermediate Research Multidimensional Levels of Language Writing Measures in Grades Four to Six Gary Troia, Michigan St U Predictors of narrative writing quality for 362 students in grades 4-6 were examined. Grade differences were found for all word-level variables & most discourse-level variables, but only one sentence-level variable (punctuation accuracy). Discourse-level variables of text productivity, narrativity, & process use, sentence-level variables of grammatical correctness & punctuation accuracy, and word-level variables of spelling/ capitalization accuracy, lexical productivity, & handwriting style were significant predictors. FR 5:30PM-6:00PM Westin, Galleria Tech D 4619 SLP LAI Intermediate Research Working Memory & Response to Intervention for Elementary Students At Risk of Reading Difficulty Lauren Baron, MGH Inst; Tiffany Hogan, MGH Inst; Joanna Christodoulou, MGH Inst This study investigated working memory and word reading in children who were at risk of reading difficulty. We grouped children by average and below average working memory ability and examined whether groups differed in response to a summer reading intervention. Theoretical and clinical implications will be discussed. FR 1:00PM-1:30PM Westin, Galleria Tech D 4620 SLP MSD Intermediate Research How Consonant-Vowel Sequences Impact Speech Motor Control in Children With Apraxia Julie Case, New York U; Maria Grigos, New York U This project examined how different consonant-vowel combinations impact speech accuracy and motor control in children with apraxia, typical development, and other speech sound disorders. A framework for examining motor complexity will be presented based on the motoric demands of sound combinations. Clinical implications of these findings for treatment and assessment will be discussed. FR 3:00PM-3:30PM Westin, Galleria Tech D 4621 SLP MSD Intermediate Research The Effect of Spatial Tongue-Jaw Coordination on Acoustic Vowel Contrast in ALS Panying Rong, U of Kansas This study used a vocal tract model to investigate the causal effects of disease-related changes in spatial tongue-jaw coordination on vowel acoustics in persons with varying severity of speech motor involvement in ALS. The results suggested that, while increased jaw contribution to tongue movement enhanced acoustic vowel contrast in general, the extent of enhancement was negatively associated with disease severity. FR 10:30AM-11:00AM Westin, Galleria Tech H 4622 SLP MSD Introductory Research Current Practices in Treating Childhood Apraxia of Speech (CAS) Mirjana Gomez, U of Sydney; Patricia McCabe, U of Sydney; Alison Purcell, U of Sydney This paper describes the current practices of speech-language pathologists (SLPs) in treating Childhood Apraxia of Speech (CAS). It also explores the attitudes and perspectives of SLPs to evidence-based practice and describes perceived barriers to implementing currently available external research evidence in CAS treatment. FR 1:00PM-1:30PM Westin, Galleria Tech E 4624 SLP SLS Introductory Research Consequences of Failure Influence Multi-Task Performance Kara Simon-Kuhn, Purdue U; Jeffrey Haddad, Purdue U; Jessica Huber, Purdue U Individuals often complete two tasks simultaneously, such as walking while talking. Little is known regarding how individuals prioritize the performance of goal-directed tasks. We examined how young adults prioritize communicating while performing a postural-manual task. Reaching/postural kinematic measures and acoustic/syntactic communication measures were made. Results indicated that communication was prioritized over manual accuracy. FR 1:30PM-2:00PM Westin, Galleria Tech E 4625 SLP SLS Intermediate Research Influence of Speech Production Experience on Size & Structure of Speech Motor Programs Hyun Seung Kim, U of Pittsburgh; Malcolm McNeil, U of Pittsburgh; Susan Shaiman, U of Pittsburgh The existence of generalized motor programs (GMPs) for lexical tones was supported with the observance of smaller GMP errors in native Mandarin speakers than non-Mandarin speakers. Performance variability is best explained by switching among production modes and various unit sizes of speech motor programs, which are influenced by speaker experience.