Substance use disorders are considered externalizing disorders, defined by anti-social and impulsive behavior, as opposed to internalizing disorders, defined by anxious and depressive thinking; however, that strict binary is increasingly untenable. In this dissertation, I evaluate the co-development of internalizing and externalizing symptoms…

This article focuses on an analysis of trends in the "Journal of Positive Behavorial Interventions" ("JPBI") since its inception. The primary emphasis is on the variables that contributed to the origin of the journal. Key researchers and other professionals felt that there was a need for a new field (with a new journal) in…

This research examined the risk and protective factors of responders and nonresponders to a schoolwide implementation of positive behavioral interventions and supports (SW-PBIS) within an alternative school. Students completed self-perception measures of individual, school, community, and home systems. Multivariate analysis of variance indicated a…

Chronic absenteeism in early childhood is associated with numerous adverse outcomes throughout childhood and adolescence. Interventions are needed to prevent chronic absenteeism and support child development in early education. The present study investigated the effect of Primary Project, a school-based prevention program, on average school…

Obsessive-compulsive disorder commonly co-occurs with autism. Research characterising the interplay between restricted, repetitive behaviours, activities and interests related to autism and obsessive-compulsive disorder symptoms has used theory-driven, bottom-up methodology. This study aimed to interview autistic adults about the subjective…

An ABAB reversal design was employed to evaluate the effect of differential reinforcement of low (DRL) frequency behavior as an interdependent group contingency on the frequency of vocal disruptions of five males, 6-14-years old, diagnosed with an autism spectrum disorder. The results showed lower frequencies of vocal disruptions during…

Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder, the etiology of which has not been clearly determined yet. There is increasing evidence that synaptic and dendritic changes are involved in the etiology of ASD. The aim of this study is to determine whether serum Thrombospondin-1 and Thrombospondin-2 differ between ASD…

This dissertation addresses the problem of practice of the high rate of employees in financial organizations clicking on phishing links, positioning their companies at risk of a data incident or breach. The financial sector was the most breached industry in 2022 (Schwartz, 2022) and was impacted the most by malicious phishing emails (Trellix…

This preregistered, longitudinal study examined how much adolescents value and integrate their parents' and peers' attitudes into their own attitudes from early to middle adolescence. Across three waves, participants (N = 172, 91 female, 11-16 years across three waves; 439 data points) decided whether to pay money to learn their parents' or peers'…

The use of a screening tool for school-wide screening of internalizing symptoms is an important strategy for early identification and prevention of more serious and impairing emotional and behavioral health problems in adolescents. However, threshold cut-off scores determined for screening tools may not be suitable for all populations. Using a…

Self-regulation is arguably one of the most crucial predictors of school readiness, academic achievement, and lifelong well-being. While educators in the prior-to-school years have a pivotal role to play in stimulating growth in early self-regulation, less is known about their knowledge and practices in this area. This interview study was…

Exclusionary and punitive school discipline policies, such as suspensions and expulsions, allow educators to remove students from the classroom for poor behavior or misconduct. However, emerging research suggests that these practices also increase the likelihood that students repeat grades, are excessively absent from school, drop out entirely…

Functional communication training is a well-established treatment for socially reinforced destructive behavior that typically includes differential reinforcement of the functional communication response (FCR) in combination with extinction of destructive behavior. However, when the schedule of reinforcement for the FCR is thinned, destructive…

Individuals with autism spectrum disorders (ASD) often present with difficulty in sustaining engagement, attention, and have disruptive behavior in classroom settings. Without appropriate intervention, these challenging behaviors often persist and negatively impact educational outcomes. Self-monitoring is a well-supported evidence-based practice…

Although the good behavior game (GBG) has a long empirical record for effectively decreasing inappropriate student behavior, there are fewer studies that have targeted improving appropriate behavior. This article describes why and how the GBG can be used by teachers across grade levels and situations to increase student appropriate behavior and…