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A Transdiagnostic Examination Of Cognitive Heterogeneity In Children And Adolescents With Neurodevelopmental Disorders, Sarah Al-Saoud, Emily S. Nichols, Emma G. Duerden, Loretta Norton

Western Libraries Undergraduate Research Awards (WLURAs)

Children and adolescents with neurodevelopmental disorders (NDDs) demonstrate extensive cognitive heterogeneity that is not adequately captured by traditional diagnostic systems. Using a transdiagnostic approach, a retrospective cohort study of cognitive functioning was conducted with a large heterogenous sample (n = 1529) of children and adolescents 7 to 18 years of age with NDDs. Measures of short-term memory, verbal ability, and reasoning were administered to participants with attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), comorbid ADHD/ASD, and typically developing (TD) participants using a 12-item web-based neurocognitive testing battery. Unsupervised machine learning techniques were implemented to create a self-organizing map (SOM), …

Individual Differences In Executive Functioning And Psycho-Emotional Well-Being And The Impact Of Acute Exercise On Children And Youth With Adhd, Madeline Crichton

Electronic Thesis and Dissertation Repository

Short bouts of exercise can improve inhibitory control in children with Attention Deficit Hyperactivity Disorder (ADHD). However, individual differences among children with ADHD may impact the effectiveness of exercise interventions. We investigated how individual differences in inhibitory control, mood, and self-efficacy impact the efficacy of acute exercise among children with ADHD. Sixteen participants (ages 10-14) completed two interventions: 10 minutes of exercise and 10 minutes of silent reading (control). Inhibitory control was assessed prior to the intervention, immediately after the intervention, and after a 10-minute delay. Results suggested that participants with lower initial inhibitory control benefited more from exercise than …

Microdosing Mindfulness: Understanding The Effects Of Brief Mindfulness Meditation In Children With Adhd, Marcus D. Gottlieb

Electronic Thesis and Dissertation Repository

Mindfulness Meditation (MM) is receiving increased empirical support as a method for addressing ADHD symptomology. Research shows that MM interventions lasting weeks or months promote key aspects of cognitive and psycho-emotional functioning in youth with ADHD. Using a pre-post within-subjects design, we sought to determine whether a single MM session supports neurocognitive and/or psycho-emotional functioning in youth with ADHD. Sixteen participants aged 10-14 completed measures of executive and psycho-emotional functioning before/after a 10-minute MM session and silent reading control. Functional neuroimaging assessed whether MM supported changes in prefrontal cortex (PFC) activation during cognitive tasks. We found that a single MM …

Cognitive, Neural, And Educational Contributions To Mathematics Performance: A Closer Look At The Roles Of Numerical And Spatial Skills, Zachary C.K. Hawes

Electronic Thesis and Dissertation Repository

The principal aims of this thesis were to (1) provide new insights into the cognitive and neural associations between spatial and mathematical abilities, and (2) translate and apply findings from the field of numerical cognition to the teaching and learning of early mathematics.

Study 1 investigated the structure and interrelations amongst cognitive constructs related to numerical, spatial, and executive function (EF) skills and mathematics achievement in 4- to 11-year old children (N=316). Results revealed evidence of highly related, yet separable, cognitive constructs. Together, numerical, spatial, and EF skills explained 84% of the variance in mathematics achievement (controlling for chronological age). …