Professional Development Targeting Classroom Management and Behavioral Support Skills in Early Childhood Settings: A Systematic Review.

Early childhood educators are expected to provide the children in their centers high-quality care and preparation for later school success. At the same time, nearly a third of children enter early care and education settings displaying challenging behaviors, which in turn impacts educators' stress levels and wellbeing. It is then unsurprising that classroom management and providing behavioral supports are consistently identified as areas where educators require further training upon entering the workforce. The purpose of this study is to conduct a systematic review of the empirical literature on professional development (PD) approaches targeting these areas for early childhood professionals. Forty-two studies were identified as meeting inclusion criteria and were coded for strategies targeted, the context and characteristics of the PD series, and the research design and outcomes utilized. Findings revealed that studies were highly variable in terms of targeted strategies, format of administration, training dose, research design, educator and child samples, and reporting practices. The majority of studies were conducted with educators from Head Start and public preschools and utilized research staff in the administration of the PD approaches. This indicates a need for more high-quality empirical evidence on PD approaches that cater to the larger early childhood workforce and centers' needs. Implications for researchers and early childhood mental health professionals and administrators are discussed. Supplementary Information: The online version contains supplementary material available at 10.1007/s12310-022-09562-x.

Harnessing Home-School Partnerships and School Consultation to Support Youth With Anxiety.

Youth with anxiety often experience significant impairment in the school setting. Despite the relevance and promise of addressing anxiety in schools, traditional treatment approaches to school-based anxiety often do not adequately address generalization to the school setting, or they require removing the student from the classroom to deliver time- and staff-intensive programs. Such programs often leave teachers and caregivers feeling ill-equipped to support the student with anxiety throughout the natural course of the school day. Given the heavy demands placed on teachers and documented burnout among school professionals, providing effective school supports requires collaborative partnerships among outpatient therapists/specialists, school personnel, and caregivers. Drawing from literature on collaborative models for externalizing problems, we offer recommendations for outpatient therapists and specialists working to implement evidence-based supports in school settings and promote home-school partnerships to benefit youth with anxiety in the school setting. Our recommendations touch upon several components of such school consultation, including (a) identification of key parties involved, (b) conducting a needs assessment, (c) collaborative goal setting and development of a fear hierarchy, (d) plan development and implementation (e.g., facilitating a school-based exposure mindset, promoting home-school communication, enhancing school relationships), and (e) progress monitoring and ongoing support. We conclude with a case example to bring these recommendations to life.

Differentiating Preschool Children with Conduct Problems and Callous-Unemotional Behaviors through Emotion Regulation and Executive Functioning.

Callous-unemotional (CU) traits are important characteristics for identifying severe patterns of conduct problems (CP). The current study focused on (a) identifying subgroups of young children displaying a combination of CP and CU behaviors and (b) examining the extent to which executive functioning (EF) and emotion regulation (ER) are associated with CU behaviors. Participants included 249 preschoolers (N = 249, 78% boys, Mage = 4.95 years; 81% Latino/Hispanic) referred to treatment because of externalizing behavior problems. CU behaviors and CP were measured via a combination of teacher/parent rating scales. A multimethod approach was used to measure EF and ER including parent/teacher rating scales, neuropsychological, and observational tasks. Poorer ER as rated by parents/teachers and observed was associated with greater levels of CU behaviors. Latent profile analyses identified three subgroups of children displaying (a) low CU/low CP, (b) moderate CU/moderate CP, and (c) high CU/high CP. Children in the high CU/high-CP group were rated as having significantly poorer rated ER compared to all other groups and poorer observed ER compared to the low-CU/low-CP group. Exploratory analyses found that children in the high-CU/high-CP group displayed marginally lower levels of rated ER but significantly better EF performance on standardized neuropsychological tasks compared to children in a low-CU/high-CP group.Children with higher levels of reported CU behaviors and CP display poorer ER yet may display relatively better EF performance compared to children with lower levels of CU behaviors and CP.

Intervention response among preschoolers with ADHD: The role of emotion understanding.

Emotion recognition/understanding (ERU), which is the ability to correctly identify emotional states in others as well as one's self, plays a key role in children's social-emotional development and is often targeted in early intervention programs. Yet the extent to which young children's ERU predicts their intervention response remains unclear. The current study examined the extent to which initial levels of ERU and changes in ERU predicted intervention response to a multimodal early intervention program (Summer Treatment Program for Pre-Kindergarteners; STP-PreK). Participants included 230 young children (Mage = 4.90, 80.0% male) with attention-deficit/hyperactivity disorder (ADHD) who participated in the 8-week STP-PreK. Children's ERU was measured via a standardized behavioral task. Similarly, standardized measures of academic achievement (Woodcock-Johnson-IV), executive functioning (Head-Toes-Knees-Shoulders-Task), and social-emotional functioning (Challenging Situation Task) were obtained pre- and post-intervention. Parents and teachers also reported on children's behavioral functioning pre- and post-intervention. Children with better initial ERU made greater improvements in academic, executive functioning (EF), and social-emotional domains, along with decreases in inattention symptom severity. However, pre-intervention levels of ERU were not associated with improvements in parent/teacher report of hyperactivity, oppositional defiant disorder, and overall behavioral impairment. Lastly, changes in ERU only predicted improvement in EF, but not any other school readiness outcomes. We provide preliminary evidence that initial levels of ERU predict intervention response across school readiness domains in a sample of preschoolers with ADHD.

Differentiating Symptoms of ADHD in Preschoolers: The Role of Emotion Regulation and Executive Function.

Objective: This study examined the extent to which individual differences in executive function (EF) and emotion regulation (ER) were uniquely associated with inattention and hyperactivity symptoms of ADHD, respectively. Method: Participants included 249 preschool children with at-risk or clinically elevated levels of externalizing behavior problems (EBPs). Results: Regression analyses were conducted examining the association between EF and ER-as reported by parents/teachers and assessed via child task performance-and hyperactivity and inattention. Even after accounting for IQ, age, sex, and severity of oppositional defiant disorder, greater levels of parent/teacher-reported EF problems and worse EF performance were associated with greater inattention. In addition, better observed ER was associated with lower inattention. Conversely, greater levels of parent/teacher-reported EF problems and worse parent/teacher-reported ER were associated with greater hyperactivity. Conclusion: Our findings suggest that underlying deficits in EF and ER do differentially relate to ADHD symptoms.

Measuring task set preparation versus mind wandering using pupillometry.

We investigated participants' task set preparation by measuring changes in pupil diameter during a blank interval as they prepared for an easy (i.e., prosaccade) or difficult (i.e., antisaccade) trial. We used occasional thought probes to gauge "on-task" thoughts versus mind wandering. In both studies, participants' pupil diameters were larger when anticipating an antisaccade, relative to a prosaccade, trial. In contrast, their self-reported mind wandering depended upon whether the thought probes occurred after their target detection response (Experiment 1) or occurred in lieu of target detection (Experiment 2). In the latter case, self-reported mind wandering echoed the pupil diameter changes in demonstrating greater off-task behavior when preparing for a prosaccade trial. More important, trial type effects in pupil diameter emerged only when participants reported being "on-task," but disappeared during periods of mind wandering. These results demonstrate that changes in pupil diameter reflect the degree of preparatory control exerted for an upcoming trial, but only when attention is actively focused on the upcoming task. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

Latino parent involvement and associations with home literacy and oral reading fluency.

OBJECTIVE: Grounded in Hoover-Dempsey and Sandler's theoretical model of parents' motivations for involvement in their children's education, the aim of this study was to examine the associations between Latino parents' perceptions of involvement and the home literacy environment, as well as children's oral reading fluency (ORF). We further considered salient contextual factors (i.e., educational attainment, income status, and parent reading proficiency) that may impact parents' perceptions of involvement. METHOD: The sample included 730 young Latino children (Mage = 6.47, SD = 1.13; 49.9% male) and their caregivers attending summer camps that participated in a summer reading intervention program. Prior to intervention delivery, parents completed questionnaires regarding general family demography, parent perceptions of involvement, and the home literacy environment. Standardized curriculum-based measures of children's ORF were conducted by trained research staff. RESULTS: Results indicated that Latino parents' perceptions of involvement were associated with children's ORF and aspects of their home literacy involvement, even when accounting for parents' income, education level and self-reported reading proficiency. Regarding income status, families from higher income backgrounds perceived having more time and energy, and were more involved, as compared to families from lower income backgrounds. CONCLUSIONS: Findings from this study suggest that Latino parents' perceptions not only influence their home literacy involvement, but also their young children's ORF, even when accounting for contextual factors. Implications for practice and future directions are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Does dose of early intervention matter for preschoolers with externalizing behavior problems? A pilot randomized trial comparing intensive summer programming to school consultation.

The goals of this study were to (a) isolate the ideal length (i.e., 4 or 8 weeks) of the Summer Treatment Program for Kindergarteners (STP-PreK) for improving school readiness and kindergarten success outcomes of preschool children with externalizing behavior problems (EBPs) during the transition to kindergarten; and (b) compare the STP-PreK model to a more standard approach in school settings (i.e., behavioral school consultation). Forty-five preschool children (82% boys; Mage = 5.16 years; 93% Hispanic/Latino background) were randomized to one of three intervention conditions: 1) 8-week STP-PreK (8W); 2) 4-week STP-PreK (4W); or 3) school year behavioral consultation (SC). Both STP-PreK groups included an 8-week parent training component. Baseline, post-intervention, and 6-month follow-up data were collected on children's school readiness and kindergarten success outcomes including parent, teacher, and objective assessment measures. Analyses using linear mixed models indicated that children's behavioral, academic, social-emotional, and self-regulation functioning significantly improved across groups. Few significant differences were found between children receiving the 4W and 8W programs, suggesting that both programs have the potential to prepare preschool children with EBP for the transition to school. Both 4W and 8W groups experienced greater initial growth across time in most domains compared to children in the SC group. However, by the end of the kindergarten year, children in the SC group caught up to children in both 4W and 8W groups on most domains. Overall, these findings suggest that all three intervention doses are effective in improving kindergarten year functioning, with some important considerations for intervention timing in preparation for the transition to elementary school. Clinical implications for school personnel are discussed.

Targeting self-regulation and academic functioning among preschoolers with behavior problems: Are there incremental benefits to including cognitive training as part of a classroom curriculum?

The purpose of this study was to examine the additional benefit of an adaptive Cogmed working memory training (CWMT) to a social-emotional/self-regulation classroom curriculum for preschoolers with externalizing behavior problems (EBP). Participants for this study included 49 children (71% boys, Mage = 4.52) with at-risk or clinically elevated levels of EBP. Children participated in an 8-week summer treatment program for Pre-Kindergarteners (STP-PreK), where they were randomly assigned to either adaptive CWMT (n = 24), or nonadaptive CWMT (n = 25). Multiple repeated measures analyses were conducted to examine the impact of adaptive versus nonadaptive CWMT on pre and posttreatment parent-/teacher-reported behavioral functioning, parent-/teacher reported and child task performance of executive functioning, and standardized academic achievement measures. Repeated measures analyses found that children in both groups improved on all measures (d's = .23-.86). However, there were no significant time X condition effects for parent or teacher-reported behavior, reported or observed executive functioning, or standardized academic measures. These findings suggest that CWMT does not appear to provide any incremental benefits to children's executive functioning, behavior, or academics when implemented within a comprehensive behavioral modification intervention.

Treatment Response among Preschoolers with EBP: The Role of Social Functioning.

OBJECTIVE: The purpose of the study was to identify profiles of social functioning for preschoolers with externalizing behavior problems (EBP) and examine how profiles are predictive of response to a behavioral treatment program. METHOD: 139 preschoolers with EBP participated in an 8-week Summer Treatment Program for Pre-Kindergartners (STP-PreK). Latent profiles of social functioning were created from parent and teacher rated atypicality and social skills scales, along with child performance on an emotion knowledge and hostile attribution task. Baseline and treatment outcomes included behavioral, academic, and executive functioning measures. RESULTS: Latent profile analyses resulted in two profiles (e.g., average and low) marked by differences in social skills, emotion knowledge and rates of atypical behaviors. Children in the low social functioning group had higher teacher rated hyperactivity and attention problems at baseline (d = .44 & 1.07), as well as lower IQ (d = .39). Children in the low social functioning group also had poorer treatment response as they had lower executive functioning scores (ß = -.17, p < .05) at the completion of treatment. IQ moderated the association between social functioning profiles and behavioral treatment outcomes, such that lower social functioning was only associated with higher rates of attention problems for children with average IQ. CONCLUSIONS: Findings highlight the differential impact of social functioning in predicting treatment outcomes.

Associations Between Disruptive Behavior Problems, Parenting Factors, and Sleep Problems Among Young Children.

OBJECTIVE: To examine within an at-risk/clinical sample of preschool-aged children with externalizing problems: (1) which disruptive behavior and attention disorder symptoms (i.e., inattention, hyperactivity/impulsivity, and oppositionality/aggression) and (2) what aspects of parenting (e.g., discipline practices or stress) are related to children's sleep problems (e.g., sleep habit and night waking problems). METHOD: The sample consisted of 148 children (meanage = 5.06 years, 82% male) with at-risk/clinically elevated levels of externalizing behavior problems and their primary caregiver. As part of a larger study, parents reported on their stress and parenting practices and their children's behavioral and sleep functioning. Positive and negative parenting behaviors ("do" and "don't" skills, respectively) were also observed during a 15-minute parent-child interaction during play. RESULTS: Oppositionality/aggression was the only disruptive behavior and attention disorder symptom associated with more sleep habit problems. Higher levels of inconsistent discipline and "don't" skills were also associated with more sleep habit problems. Within a combined model, an interaction emerged such that the association between "don't" skills and elevated sleep habit problems was only evident at low levels of inconsistent discipline. In terms of night waking problems, there was only an association with parenting stress, whereas the other parenting factors and disruptive behavior and attention disorder symptoms were unrelated. CONCLUSION: Although the directionality of our associations cannot be ascertained because of the cross-sectional nature of our study, these findings, nevertheless, highlight the importance of parenting factors (e.g., inconsistent discipline and parenting stress) when considering sleep difficulties in young children with disruptive behavior and attention disorders.

Response to Time-Out Among Preschoolers with Externalizing Behavior Problems: The Role of Callous-Unemotional Traits.

This study examined the role of callous-unemotional (CU) traits in preschoolers with externalizing behavior problems (EBP) and their response to time-out (TO). One hundred ninety preschoolers (76% boys, Mage = 4.92) with at-risk/clinically elevated levels of EBP participated in an 8-week summer treatment program (STP-PreK). Total number of minutes spent daily in TO for intentional aggression (IA) and repeated non-compliance (RNC) were recorded during the initial (T1) and final (T2) phases of the STP-PreK. After accounting for severity of EBP and levels of TO at T1, higher levels of CU traits predicted greater total levels of TO at T2. An interaction also emerged between symptoms of oppositional defiant disorder (ODD) and CU traits in predicting IA. Specifically, greater ODD symptoms predicted fewer number of IA related TO at T2, but only for children with low CU traits. Implications for treatment are discussed.

Summer Treatment Program for Preschoolers with Externalizing Behavior Problems: a Preliminary Examination of Parenting Outcomes.

Within an at-risk sample of preschoolers with externalizing behavior problems (EBP), the current study examined the initial promise of a multimodal intervention, the Summer Treatment Program for Pre-Kindergarteners (STP-PreK), in improving parenting outcomes. Using an open trial design, 154 parents and their preschool children (73% male; M age = 5.06 years; 82% Hispanic/Latino background) with at-risk or clinically elevated levels of EBP (57% of which were referred by schools or mental health/medical professionals) completed a baseline and post-treatment assessment. A subsample of 90 families completed a follow-up assessment approximately 6 to 9 months after treatment completion. Parental measures of parenting stress and discipline strategies were collected across all three assessments. Observational data were also collected across all assessments during a 5-min standardized child-led play situation and a 5-min parent-led clean up task. The parenting component of the STP-PreK included a School Readiness Parenting Program (SRPP) of which the behavioral management component was implemented via a Parent-Child Interaction Therapy (PCIT) adaptation (8 weekly group sessions with 15-20 parents in each group, lack of requirement of "mastery" criteria). All parenting outcomes (both ratings and observed) significantly improved after the intervention (Cohen's d mean effect size across measures 0.89) with all effects being maintained at the 6-9 month follow-up. These findings highlight the initial promise of our SRPP's PCIT adaptation in targeting multiple aspects of parenting while yielding comparable parenting skills acquisition compared to traditional individual PCIT.

Comparing working memory in bilingual and monolingual Hispanic/Latino preschoolers with disruptive behavior disorders.

The current study examined differences in working memory (WM) between monolingual and bilingual Hispanic/Latino preschoolers with disruptive behavior disorders (DBDs). A total of 149 children (Mage = 5.10 years, SD = 0.53; 76% male) with elevated levels of DBDs, as indicated by their parents or teachers, were recruited to participate in an 8-week summer program prior to the start of kindergarten (Summer Treatment Program for Pre-Kindergarteners). Prior to the start of treatment, parents completed several measures about their children's behavior and executive function, and children were administered two subtests of the Automated Working Memory Assessment to examine their current WM capabilities. After controlling for demographic variables (i.e., age, sex, socioeconomic status, IQ, and diagnostic status), no significant differences were observed between bilingual and monolingual children in verbal WM performance (ß = .03, p > .05). However, children who were bilingual did perform better than monolinguals on spatial WM tasks (ß = .23, p < .01). Finally, parent reports of WM corroborated these findings such that bilingual children were reported as having fewer WM problems by parents (ß = -.19, p < .05) and teachers (ß = -.22, p < .05). Whereas WM deficits are often found among children with DBDs, the current findings suggest that bilingualism may serve as a protective factor for preschoolers with DBDs.

Parent Perceptions of Medication Treatment for Preschool Children with ADHD.

This study sought to examine parent perceptions of medication use for 151 preschool children (M age = 5.05 years, 78% male, 82% Hispanic/Latino) with or at-risk for ADHD who were medication naive. Parents completed questionnaires regarding family background and perceptions of medication treatment. Parents and teachers completed ratings of child diagnostic symptomatology, behavioral functioning, and functional impairment. Results indicate that only 45% of parents were open to the possibility of medication. No associations were found between child demographics, severity of ADHD symptoms, or level of functional impairment and parental openness to medication. On the other hand, children of parents who were open to medication tended to have higher levels of oppositionality and aggression (as reported by parents but not teachers) compared with children of parents who were not open to medication. These findings are discussed in the context of early intervention given their implications for a variety of treatment providers.

Systematic assessment of the performance of illumina's MiSeq FGx™ forensic genomics system.

This study assesses the performance of Illumina's MiSeq FGx System for forensic genomics by systematically analyzing single source samples, evaluating concordance, sensitivity and repeatability, as well as describing the quality of the reported outcomes. DNA from 16 individuals (9 males/7 females) in nine separate runs showed consistent STR profiles at DNA input ≥400 pg, and two full profiles were obtained with 50 pg DNA input. However, this study revealed that the outcome of a single sample does not merely depend on its DNA input but is also influenced by the total amount of DNA loaded onto the flow cell from all samples. Stutter and sequence or amplification errors can make the identification of true alleles difficult, particularly for heterozygous loci that show allele imbalance. Sequencing of 16 individuals' STRs revealed genetic variations at 14 loci at frequencies suggesting improvement of mixture deconvolution. The STR loci D1S1656 and DXS10103 were most susceptible to drop outs, and D22S1045 and DYS385a-b showed heterozygote imbalance.  Most stutters were typed at TH01 and DYS385a-b, while amplification or sequencing errors were observed mostly at D7S820 and D19S433. Overall, Illumina's MiSeq FGx System produced reliable and repeatable results.  aSTRs showed fewer drop outs than the Y- and X-STRs.

Beyond behavior modification: Benefits of social-emotional/self-regulation training for preschoolers with behavior problems.

The current study evaluated the initial efficacy of three intervention programs aimed at improving school readiness in preschool children with externalizing behavior problems (EBP). Participants for this study included 45 preschool children (76% boys; Mage=5.16years; 84% Hispanic/Latino background) with at-risk or clinically elevated levels of EBP. During the summer between preschool and kindergarten, children were randomized to receive three newly developed intervention packages. The first and most cost effective intervention package was an 8-week School Readiness Parenting Program (SRPP). Families randomized into the second and third intervention packages received not only the weekly SRPP, but children also attended two different versions of an intensive kindergarten summer readiness class (M-F, 8a.m.-5p.m.) that was part of an 8-week summer treatment program for pre-kindergarteners (STP-PreK). One version included the standard behavioral modification system and academic curriculum (STP-PreK) while the other additionally contained social-emotional and self-regulation training (STP-PreK Enhanced). Baseline, post-intervention, and 6-month follow-up data were collected on children's school readiness outcomes including parent, teacher, and objective assessment measures. Analyses using linear mixed models indicated that children's behavioral functioning significantly improved across all groups in a similar magnitude. Children in the STP-PreK Enhanced group, however, experienced greater growth across time in academic achievement, emotion knowledge, emotion regulation, and executive functioning compared to children in the other groups. These findings suggest that while parent training is sufficient to address children's behavioral difficulties, an intensive summer program that goes beyond behavioral modification and academic preparation by targeting socio-emotional and self-regulation skills can have incremental benefits across multiple aspects of school readiness.

Treatment Sequencing for Childhood ADHD: A Multiple-Randomization Study of Adaptive Medication and Behavioral Interventions.

Behavioral and pharmacological treatments for children with attention deficit/hyperactivity disorder (ADHD) were evaluated to address whether endpoint outcomes are better depending on which treatment is initiated first and, in case of insufficient response to initial treatment, whether increasing dose of initial treatment or adding the other treatment modality is superior. Children with ADHD (ages 5-12, N = 146, 76% male) were treated for 1 school year. Children were randomized to initiate treatment with low doses of either (a) behavioral parent training (8 group sessions) and brief teacher consultation to establish a Daily Report Card or (b) extended-release methylphenidate (equivalent to .15 mg/kg/dose bid). After 8 weeks or at later monthly intervals as necessary, insufficient responders were rerandomized to secondary interventions that either increased the dose/intensity of the initial treatment or added the other treatment modality, with adaptive adjustments monthly as needed to these secondary treatments. The group beginning with behavioral treatment displayed significantly lower rates of observed classroom rule violations (the primary outcome) at study endpoint and tended to have fewer out-of-class disciplinary events. Further, adding medication secondary to initial behavior modification resulted in better outcomes on the primary outcomes and parent/teacher ratings of oppositional behavior than adding behavior modification to initial medication. Normalization rates on teacher and parent ratings were generally high. Parents who began treatment with behavioral parent training had substantially better attendance than those assigned to receive training following medication. Beginning treatment with behavioral intervention produced better outcomes overall than beginning treatment with medication.

Comparative Cost Analysis of Sequential, Adaptive, Behavioral, Pharmacological, and Combined Treatments for Childhood ADHD.

We conducted a cost analysis of the behavioral, pharmacological, and combined interventions employed in a sequential, multiple assignment, randomized, and adaptive trial investigating the sequencing and enhancement of treatment for children with attention deficit hyperactivity disorder (ADHD; Pelham et al., 201X; N = 146, 76% male, 80% Caucasian). The quantity of resources expended on each child's treatment was determined from records that listed the type, date, location, persons present, and duration of all services provided. The inputs considered were the amount of physician time, clinician time, paraprofessional time, teacher time, parent time, medication, and gasoline. Quantities of these inputs were converted into costs in 2013 USD using national wage estimates from the Bureau of Labor Statistics, the prices of 30-day supplies of prescription drugs from the national Express Scripts service, and mean fuel prices from the Energy Information Administration. Beginning treatment with a low-dose/intensity regimen of behavior modification (large-group parent training) was less costly for a school year of treatment ($961) than beginning treatment with a low dose of stimulant medication ($1,669), regardless of whether the initial treatment was intensified with a higher "dose" or if the other modality was added. Outcome data from the parent study (Pelham et al., 201X) found equivalent or superior outcomes for treatments beginning with low-intensity behavior modification compared to intervention beginning with medication. Combined with the present analyses, these findings suggest that initiating treatment with behavior modification rather than medication is the more cost-effective option for children with ADHD.

Assessing Callous-Unemotional Traits in Preschool Children With Disruptive Behavior Problems Using Peer Reports.

The goal of this study was to examine the extent to which preschoolers with externalizing behavior problems (EBP) can identify behaviors indicative of callous-unemotional (CU) traits among their peers. Participants for this study included 86 preschool children (69% boys; Mage = 5.07 years) with at-risk or clinically elevated levels of EBP who were attending a summer treatment camp. Data collected from the children, their peers, and the counselors who worked at the summer camp examined preschoolers' social preference, likability, and behaviors indicative of CU. Parents and preschool teachers also reported on children's CU traits and severity of behavioral impairment, as well as school readiness. Peer nominations of CU traits showed (a) excellent factor structure as evidenced by clear CU items (e.g., "don't feel bad when they do something wrong") versus more prosocial items ("share," "cooperate"); (b) moderate construct validity when compared to counselor reports of the CU factor as well as preschool teacher reported ratings of CU traits and severity of behavioral impairment; and (c) good utility as evidenced by associations with peer and counselor rated social preference, likability, and school readiness measures as rated by both parents and preschool teachers. These findings indicate that as early as preschool, children with EBP can identify peers who engage in behaviors indicative of CU traits, which have significant implications for children's social status and overall school readiness.