Objective Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder that affects about 5% of school-aged children.4 Fluid reasoning (FR) tasks assess one’s ability to detect underlying conceptual relationships and use reasoning to identify and apply rules to problem solve.4 Previous research has demonstrated that children with ADHD perform more poorly in FR, though the mechanism behind this is unclear.3,4 The literature suggests that FR is reliant on executive functioning skills such as inhibitory control, working memory, and planning.1,4 Therefore, this study examines how performance on FR from the Wechsler Intelligence Scale for Children (WISC-V) is related to measures of executive functioning (EF) and attention in children with ADHD. Method Participants were children aged 8 to 16-years with ADHD (N = 75) referred for neuropsychological testing. Participant demographics: males (N = 50, 65.8%), females (N = 26, 34.2%); African American (5.3%), Asian (1.3%), Caucasian (52.6%), Other (39.5%). Measures included the WISC-V Fluid Reasoning Index (FRI), Delis-Kaplan Executive Function System (DKEFS) Color Word Identification (CWI) and Tower subtests, omissions/commissions on the Conners Continuous Performance Test (CPT), and Behavior Rating Inventory of Executive Functioning (BRIEF) subscales. Results Bivariate correlations showed that the FRI was only significantly positively correlated with CWI Inhibition/Switching Time (r = .246, p = .047). Commission errors on the CPT approached significance (r = .217, p = .145). Conclusion The WISC-V FRI may be vulnerable to weaknesses in EF or behavioral control in children with ADHD and should be interpreted in that context. Findings suggest the FRI may be particularly impacted by weaknesses in inhibitory control.
Objective Sluggish cognitive tempo (SCT) is a group of attention-related symptoms that are characterized by slowed behavior and thinking, excessive daydreaming, mental confusion or fogginess, and drowsiness.4 Studies have shown that SCT is related to higher rates of anxiety, depression, and social isolation.4 Additionally, recent publications have indicated that aspects of executive functioning (EF) may be impacted in children with SCT.2,5 Meta-analysis confirmed that most SCT research has focused on parent and teacher report.1,3,4 There is an increased need for studies examining SCT with self-report.5 This study will examine how SCT is related to EF and self-reported internalizing symptoms in youth with Attention-Deficit/Hyperactivity Disorder (ADHD). Method Participants were youth aged 8 to 18-years with ADHD (N = 130) referred for neuropsychological testing. Participant demographics: males (N = 82, 63.1%). Measures included the Wechsler Intelligence Scale for Children/Wechsler Adult Intelligence Scale (WISC-V/WAIS-IV) Processing Speed Index (PSI), Conners Continuous Performance Test (CPT) Hit Reaction Time (HRT), Delis-Kaplan Executive Function System Color Word Identification (CWI) and Tower subtests, Behavior Assessment Systems for Children (BASC) self-report scales, and Personality Assessment Inventory-Adolescent (PAI-A) scales. Results Bivariate correlations showed that the PSI was significantly correlated with CWI Inhibition (r = 0.52, p < .01), CWI Inhibition/Switching (r = 0.53, p < .01), Tower (r = −0.20, p < .05), and Social Isolation (r = −0.19, p < .05), with Depression approaching significance (p = .06). The CPT HRT was also significantly correlated with CWI Inhibition (r = −0.19, p < .05) and CWI Inhibition/Switching (r = −0.22, p < .05), with Depression approaching significance (p = .05). Conclusions SCT is associated with EF and self-reported internalizing symptoms and should be included when considering interventions.
Objective This study sought to broaden the findings of the current research on the relationship between late and moderate preterm (LAMP) birth and long-term neurocognitive outcomes, specifically those related to Attention Deficit Hyperactivity Disorder (ADHD). LAMP children were compared to term-born children on rates of ADHD prevalence and neurocognitive functioning. Method This cross-sectional study included 169 patients, ages 8–12 years, who completed neuropsychological evaluation; 30.2% were female, 37.87% identified with a non-White racial group, 36.7% were Medicaid, 18.34% had in-utero exposure to substances, 40.8% were LAMP, 9.47% were born following pre-eclampsia, 21.3% required intensive care at birth, and 51.5% had ADHD family history. Measures of intellectual functioning (IQ), attention, working memory (WM), executive functioning (EF), and processing speed were derived from the Wechsler Intelligence Scale for Children, Fifth Edition, Conners Continuous Performance Test, Second and Third Editions (CPT-2/CPT-3), Delis-Kaplan Executive Function System, and NEPSY, Second Edition. Results ADHD prevalence was similar between LAMP (79.7%) and term-born children (75%), as were neurocognitive outcomes. Interestingly, no significant differences in performance-based WM or EF were observed between those with and without ADHD; inattention (CPT-2/CPT-3 Omissions) was the only performance-based measure that was significantly higher among those with ADHD (M = 61.93, SD = 15.35) than those without (M = 54.31, SD = 11.27), t(165) = −3.38, p < 0.01, 95% CI [−12.11, −3.13]. Conclusion(s) Prevalence of ADHD and measured neurocognitive outcomes were not significantly different between LAMP and term-born children. This affirms the multifactorial etiological pathways to ADHD and supports ADHD as a heterogenous neurocognitive presentation.
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