Research based on single-case designs (SCD) are frequently utilized in educational settings to evaluate the effect of an intervention on student behavior. Visual analysis is the primary method of evaluation of SCD, despite research noting concerns regarding reliability of the procedure. Recent research suggests that characteristics of the graphic display may contribute to poor reliability and overestimation of intervention effects. This study investigated the effect of increasing or decreasing the data points per x- to y-axis ratio (DPPXYR) on rater evaluations of functional relation and effect size in SCD data sets. Twenty-nine individuals (58.6% male) with experience in SCD were asked to evaluate 40 multiple baseline data sets. Two data sets reporting null, small, moderate, and large intervention effects (8 total) were modified by manipulating the ratio of the x- to y-axis (5 variations), resulting in 40 total graphs. Results indicate that raters scored effects as larger as the DPPXYR decreased. Additionally, a 2-way within-subjects analysis of variance (ANOVA) revealed a significant main effect of DPPXYR manipulation on effect size rating, F(2.11, 58.98) = 58.05, p < .001, η2 = .675, and an interaction between DPPXYR manipulation and magnitude of effect, F(6.71, 187.78) = 11.45, p < .001, η2 = .29. Overall, results of the study indicate researchers and practitioners should maintain a DPPXYR of .14 or larger in the interest of more conservative effect size judgments. (PsycINFO Database Record

No abstract

No abstract

Several researchers have argued that the functional behavior assessment (FBA) and behavior intervention plan (BIP) mandates in the Individuals With Disabilities Education Act of 2004 have gone beyond the current research base. For instance, although BIPs have been shown to improve student outcomes when implemented with strict control and oversight by researchers, it is unclear whether these relationships hold true when implemented under real educational conditions. The purpose of this research was to conduct an initial study evaluating the relationship among the evidence-based quality of federally mandated BIPs, treatment integrity, and student outcomes under real-world educational conditions free from the help of researchers. Results indicated that the evidence-based quality of BIPs was significantly related to positive student outcomes. Results also supported the role of treatment integrity as a mediator of the relationship between the evidence-based quality of BIPs and student outcomes. The implications and limitations of this research as well as directions for future research are discussed.

The present study investigated the effectiveness of peer-mediated check-in/check-out (CICO) on the internalizing behaviors of elementary school students. A nonconcurrent multiple-baseline design across participants was utilized to evaluate the intervention's effectiveness for 3 students in 1st and 2nd grade. Two 5th grade students were trained to implement CICO under the supervision of an adult intervention specialist. The peer-mediated CICO procedure was effective for 2 of the 3 participants as evidenced by moderate to large effect sizes; however, all 3 participants were identified as "at-risk" on a universal screener for internalizing problems. The results suggest peer-mediated CICO may be a resource-efficient Tier II strategy to meet the needs of students engaging in internalizing behavior within a multitiered framework of service delivery.