Steven R. Chesnut

Predictors of Access to Sex Education for Children With Intellectual Disabilities in Public Schools

Data from the National Longitudinal Transition Study-2 ( SRI International, 2002 ) were analyzed to identify variables that predicted whether individuals with intellectual disability (ID) received sex education in public schools across the United States. Results suggested that individuals receiving special education services without ID were only slightly more likely to receive sex education than students with mild ID (47.5% and 44.1%, respectively), but the percentage of students with moderate to profound ID that received sex education was significantly lower (16.18%). Analysis of teacher opinions and perceptions of the likelihood of the students benefiting from sex education found that most teachers indicated that students without ID or with mild ID would benefit (60% and 68%, respectively), but the percentage dropped to 25% for students with moderate to profound ID. Finally, across all students, the only significant demographic variable that predicted receipt of sex education was more expressive communication skills. Results are discussed in terms of ensuring equal access to sex education for students with ID in public schools.

Effects of Self-Efficacy, Emotional Intelligence, and Perceptions of Future Work Environment on Preservice Teacher Commitment.

This study was designed to examine the effects of self-efficacy, expectations of future work environment, and emotional intelligence on preservice teacher commitment to the teaching profession on a sample of 209 preservice teachers. The purpose of the study was to add to the existing knowledge surrounding preservice teacher commitment and promote new ways to approach teacher education. Using correlation and regression analyses, we found that preservice teacher self-efficacy expectations surrounding classroom management, instructional strategies, and student engagement were positively correlated with commitment. Preservice teacher expectations of future work environment influenced their satisfaction with the profession, which was also positively correlated with their commitment to enter the profession. Preservice teachers with greater emotional awareness and pro-motivational thinking also demonstrated higher levels of commitment.

The sensitivity and specificity of the social communication questionnaire for autism spectrum with respect to age

The age neutrality of the Social Communication Questionnaire (SCQ) was examined as a common screener for ASD. Mixed findings have been reported regarding the recommended cutoff scores ability to accurately classify an individual as at‐risk for autism spectrum disorder (ASD) (sensitivity) versus accurately classifying an individual as not at‐risk for ASD (specificity). With a sample from the National Database for Autism Research, this study examined the SCQs sensitivity versus specificity. Analyses indicated that the actual sensitivity and specificity scores were lower than initially reported by the creators of the SCQ. Autism Res 2016, 9: 838–845.

A meta-analysis of the social communication questionnaire: Screening for autism spectrum disorder:

The current meta-analysis examines the previous research on the utility of the Social Communication Questionnaire as a screening instrument for autism spectrum disorder. Previously published reports have highlighted the inconsistencies between Social Communication Questionnaire-screening results and formal autism spectrum disorder diagnoses. The variations in accuracy resulted in some researchers questioning the validity of the Social Communication Questionnaire. This study systematically examined the accuracy of the Social Communication Questionnaire as a function of the methodological decisions made by researchers screening for autism spectrum disorder over the last 15 years. Findings from this study suggest that the Social Communication Questionnaire is an acceptable screening instrument for autism spectrum disorder (area under the curve = 0.885). Variations in methodological decisions, however, greatly influenced the accuracy of the Social Communication Questionnaire in screening for autism spectrum disorder. Of these methodological variations, using the Current instead of the Lifetime version of the Social Communication Questionnaire resulted in the largest detrimental effect (d = −3.898), followed by using the Social Communication Questionnaire with individuals younger than 4 years of age (d = −2.924) and relying upon convenience samples (d = −4.828 for clinical samples, −2.734 for convenience samples, and −1.422 for community samples). Directions for future research and implications for using the Social Communication Questionnaire to screen for autism spectrum disorder are discussed.

Stereotyped behaviors predicting self-injurious behavior in individuals with intellectual disabilities

We examined the relation between stereotyped behavior and self-injurious behavior (SIB) for 1871 individuals with intellectual disabilities who had a score of >0 on the Behavior Problem Inventory (BPI-01; Rojahn et al., 2001). We report three main findings: First, structural equation modeling techniques (SEM) revealed that the BPI-01stereotyped behavior subscale scores predicted BPI-01 SIB subscale scores. Second, when stereotyped behavior was modeled as a predictor of SIB, mixture-modeling techniques revealed two groups of individuals: one in which stereotyped behavior was a strong, statistically significant predictor of SIB (69% of the sample), and another one in which stereotyped behavior was not a predictor of SIB (31%). Finally, two specific stereotyped behavior topographies (i.e., body rocking and yelling) were identified that significantly predicted five different SIB topographies (i.e., self-biting, head hitting, body hitting, self-pinching, and hair pulling). Results are discussed in terms of future research needed to identify bio-behavioral variables correlated with cases of SIB that can, and cannot, be predicted by the presence of stereotyped behavior.

Evaluating the Mathematics Interest Inventory Using Item Response Theory Differential Item Functioning Across Gender and Ethnicities

As the United States has begun to lag behind other developed countries in performance on mathematics and science, researchers have sought to explain this with theories of teaching, knowledge, and motivation. We expand this examination by further analyzing a measure of interest that has been linked to student performance in mathematics and intention to enroll in advanced mathematics classes. Using Item Response Theory (IRT), the purpose of this study was to evaluate the psychometric properties of the Mathematics Interest Inventory (MII). Six hundred sixty-six students (47.6% Hispanic, 48.2% Male) formed the sample. Results revealed minimal differential item functioning (DIF) between genders. Substantial DIF emerged between Hispanic and White students. Implications of the differential functioning and the measurement of interest in mathematics are discussed.

Examining the Relationship between the Research Training Environment, Course Experiences, and Graduate Students’ Research Self-Efficacy Beliefs

This study examined the relationship between graduate students’ research training environment, course experience, and research self-efficacy beliefs. The findings of the descriptive and regression analyses suggest that graduate students’ (n = 161) general research, quantitative, and qualitative research self-efficacy beliefs varied and that these beliefs were related to different aspects of the research training environment and course experiences, including their own personal research experiences. While course experience variables were significant predictors of quantitative and qualitative research self-efficacy, they were not predictive of general research methods selfefficacy. Also, while mentorship was a significant predictor of general research methods selfefficacy, it was not a significant predictor of quantitative and qualitative research self-efficacy. The implications of this study for research and graduate education are discussed.

Facial emotion recognition among typically developing young children: A psychometric validation of a subset of NimStim stimuli

We evaluated the psychometric properties of NimStim taking into account the effects of chronological age on the ability of typically developing young children (aged 2-6 years old) to recognize basic facial expressions (i.e., happy, sad, angry, and fearful). We also examined the psychometric sufficiency of NimStim under race-matched and -mismatched facial emotion stimuli. In the current study, race-matched stimuli referred to when children with African American backgrounds received African American faces to rate their emotions and vice versa for race-mismatched stimuli. Results of the current study represent the first psychometric analysis of reliability and validity for using NimStim pictures depicting happy, sad, angry, and fearful with typically developing children aged 2-6 years old as well as examining race-matched versus -mismatched stimuli. Analyses revealed the psychometric sufficiency of a subset of pictures depicting happy, sad, angry, and fearful from NimStim among young children across race matched and mismatched stimuli.