Biomedical subjects

Paul Yoder

Publications and source records attributed to Paul Yoder.

10 recordsLinked to original sources

PubMed2007

Developmental correlates of different types of motor imitation in young children with autism spectrum disorders.

This study used a concurrent correlational design to examine associations between three types of motor imitation with objects and three proposed correlates in 32 two- and three-year-old children diagnosed with ASD. Attention-following and fine motor ability were significant, unique correlates of imitation in an observational learning context. Attention-following was a significant correlate of imitation in a direct elicitation context. Social reciprocity was a significant correlate of imitation in an interactive play context. These associations were observed after controlling for general developmental level. Results support previous findings that motor imitation may not reflect a unitary construct for children with ASD and that different skills may underlie the performance of different types of motor imitation. Implications for interventions targeting motor imitation are discussed.

Attention↗

PubMed2006

Randomized comparison of two communication interventions for preschoolers with autism spectrum disorders.

This randomized group experiment compared the efficacy of 2 communication interventions (Responsive Education and Prelinguistic Milieu Teaching [RPMT] and the Picture Exchange Communication System [PECS]) in 36 preschoolers with autism spectrum disorders. Each treatment was delivered 3 times per week, in 20-min sessions, for 6 months. The results revealed that the RPMT facilitated the frequency of generalized turn taking and generalized initiating joint attention more than did the PECS. The latter effect occurred only for children who began treatment with at least some initiating joint attention. In contrast, the PECS facilitated generalized requests more than the RPMT in children with very little initiating joint attention prior to treatment. These effect sizes were large.

Autistic Disorder↗

PubMed2006

A randomized comparison of the effect of two prelinguistic communication interventions on the acquisition of spoken communication in preschoolers with ASD.

PURPOSE: This randomized group experiment compared the efficacy of 2 communication interventions (Responsive Education and Prelinguistic Milieu Teaching [RPMT] and the Picture Exchange Communication System [PECS]) on spoken communication in 36 preschoolers with autism spectrum disorders (ASD). METHOD: Each treatment was delivered to children for a maximum total of 24 hr over a 6-month period. Spoken communication was assessed in a rigorous test of generalization at pretreatment, posttreatment, and 6-month follow-up periods. RESULTS: PECS was more successful than RPMT in increasing the number of nonimitative spoken communication acts and the number of different nonimitative words used at the posttreatment period. Considering growth over all 3 measurement periods, an exploratory analysis showed that growth rate of the number of different nonimitative words was faster in the PECS group than in the RPMT group for children who began treatment with relatively high object exploration. In contrast, analogous slopes were steeper in the RPMT group than in the PECS group for children who began treatment with relatively low object exploration.

Autistic Disorder↗

PubMed2006

Teaching young children with autism to talk.

Frequent functional spoken communication is a common goal for young children with autism. We propose that the number of different nonimitative, referential, conventional, and communicative words used in a language sample is a reasonable measure of the behavior we wish to increase in such children. We review our own and others' studies focusing on young (i.e., 2 to 3 years old) children with autism to provide a rationale for including object play and nonverbal communication as potentially important treatment goals. Children who are not yet fluent in object play and nonverbal communication may need to improve these skills to facilitate the implementation and uptake of direct language therapy. Past research has shown that object play, nonverbal communication, and useful speech all are influenced by various types of interventions in young children with autism.

Autistic Disorder↗

PubMed2006

Interpreting kappa in observational research: baserate matters.

Kappa (Cohen, 1960) is a popular agreement statistic used to estimate the accuracy of observers. The response of kappa to differing baserates was examined and methods for estimating the accuracy of observers presented. Results suggest that setting a single value of kappa as "minimally acceptable" (i.e., a criterion value) is not useful in ensuring adequate accuracy of observers. Instead, researchers should use the best estimate of the true baserate of the target behavior and the obtained kappa to estimate the accuracy of observers. Investigators can then compare the estimated accuracy of observers to a preselected criterion level. Guidelines are given for selecting a criterion accuracy level.

Attention↗

PubMed2006

Simultaneous treatment of grammatical and speech-comprehensibility deficits in children with Down syndrome.

Children with Down syndrome often display speech-comprehensibility and grammatical deficits beyond what would be predicted based upon general mental age. Historically, speech-comprehensibility has often been treated using traditional articulation therapy and oral-motor training so there may be little or no coordination of grammatical and speech-comprehensibility treatment. The purpose of this paper is to provide the rationale for and preliminary evidence in support of integrating speech and grammatical intervention using a type of recast treatment in six children with Down syndrome. Speech-comprehensibility and MLU growth in generalisation sessions occurred in 4/6 and 5/6 participants, respectively. Using multiple baseline design logic, two of these participants showed evidence of treatment effects on speech-comprehensibility and two in MLU in generalisation sessions, respectively. The study constitutes a conservative test of the intervention effects for reasons that are discussed. The theoretical and applied significance of these findings are discussed.

Child, Preschool↗

PubMed2005

Challenges in evaluating psychosocial interventions for Autistic Spectrum Disorders.

In 2002, the National Institutes of Health sponsored a meeting concerning methodological challenges of research in psychosocial interventions in Autism Spectrum Disorders. This paper provides a summary of the presentations and the discussions that occurred during this meeting. Recommendations to federal and private agencies included the need for randomized clinical trials of comprehensive interventions for autism as the highest, but not the sole priority. Ongoing working groups were proposed to address psychosocial interventions with a focus on relevant statistics, standardized documentation and methods of diagnosis, development of outcome measures, establishment of standards in research; and the need for innovative treatment designs, including application of designs from other research areas to the study of interventions in ASD.

Autistic Disorder↗

PubMed2005

Prelinguistic predictors of vocabulary in young children with autism spectrum disorders.

PURPOSE: The goal of the current study was to identify a predictive model of vocabulary comprehension and production in a group of young children with autism spectrum disorders. Four prelinguistic behaviors were selected for consideration as predictors based on theoretical and empirical support for the relationship of these behaviors to language development. METHOD: The study used a longitudinal correlational design. Participants were twenty-nine 2- and 3-year-olds diagnosed with autism spectrum disorders. The prelinguistic behaviors-attention-following, motor imitation, commenting, and requesting-were measured at the initial visit. Vocabulary comprehension and production were measured 6 months later. RESULTS: Commenting was the only unique predictor of comprehension after the degree of cognitive delay was controlled. Both commenting and motor imitation of actions without objects were unique predictors of production over and above the other skills and when the degree of cognitive delay was controlled. CONCLUSIONS: The finding that both commenting and motor imitation simultaneously accounted for unique variance in vocabulary production is new to the literature and requires replication. However, results suggest that increasing behaviors that allow children with autism to make their current focus of attention obvious to social partners may be an effective approach for supporting word learning in young children with autism.

Autistic Disorder↗

PubMed2004

Identifying predictors of treatment response.

This article provides a rationale for considering predictors of growth in a treatment group as inadequate to identifying predictors of treatment response. When we interpret predictors of growth in a treatment group as synonymous with predictors of treatment response, we implicitly attribute all of the treated children's growth to the treatment, an untenable assumption under most conditions. We also contend that the use of standard scores in predictors of growth studies does not allow us to differentiate growth from treatment, from growth from other factors. We present two research methodologies that are appropriate methods of identifying predictors of treatment response: (a) single-subject experimental logic utilized to identify the specific participants in which treatment responses (not just growth) were found, combined with follow-up group comparison logic to identify the characteristics on which responders and nonresponders differ, and (b) statistical interactions among child/family/context characteristics and randomly assigned group membership. Principles for selecting potential predictors of treatment response are provided.

Child↗

PubMedDate not supplied

Language transactions during development and intervention: theoretical implications for developmental neuroscience.

Recent modeling of language development and intervention for children with disabilities has increasingly focused on the interactions between adults and children. These models have resulted in a number of recent advances in the behavioral treatment of language abilities in children with disabilities. Because these interventions are associated with substantial growth in a number of skills including speech, grammar and vocabulary, these paradigms may provide a useful model for studying neurological development of these aspects of language. The purpose of this paper is to discuss the potential neurodevelopmental ramifications of this type of theoretical model for facilitating language growth in children with and without disabilities. Indeed, because intervention can sometimes trigger rapid advances in language skills and presumably, associated neurological organization, this may prove to be a very useful paradigm for understanding the neurological correlates of language growth.

Brain↗