Nóra Bunford

Research Centre for the Natural Sciences · Institute of Cognitive Neuroscience and Psychology

Although studies document an association between Attention-Deficit/Hyperactivity Disorder (ADHD) and social problems, little is known about mediating or moderating mechanisms underlying this association. We examined whether, among youth, emotion dysregulation (ED) mediates the negative association between ADHD and social skills, and whether this me...

We investigated whether symptoms of attention-deficit/hyperactivity disorder (ADHD) are pathways through which deficits in inhibition and working memory are associated with teacher- and parent-rated social impairment in children. Participants were 64 children (55 % males; 53 % with ADHD) in grades 3-6. Consistent with our hypotheses, the associatio...

Objective: The purpose of this study was to evaluate aspects of emotion dysregulation (ED) that characterize young adolescents with ADHD, examine the effects of subtype and comorbidity, and determine the extent to which ED is related to aggression and rule-breaking and social impairment. Method: We examined which aspects of ED are most relevant...

The purpose of this research was to update the Pelham and Fabiano (2008) review of evidence-based practices for children and adolescents with attention-deficit/hyperactivity disorder. We completed a systematic review of the literature published between 2007 and 2013 to establish levels of evidence for psychosocial treatments for these youth. Our re...

Educational policies mandate the consideration of accommodations so that students with disabilities become proficient in the objectives outlined by state academic content standards and demonstrate proficiency on high-stakes assessments. However, neither policies nor empirical research provide sufficient guidance for educators to effectively select...

The attention-deficit/hyperactivity disorder (ADHD) clinical phenotype has limitations for deciphering ADHD etiology and predicting prognosis. Although relative to the clinical phenotype, intermediate phenotypes may have better explanatory and prognostic power, the extent to which ADHD intermediate phenotypes are associated with ADHD risk and progn...

Background A compelling hypothesis about attention-deficit/hyperactivity disorder (ADHD) etiopathogenesis is that the ADHD phenotype reflects a delay in cortical maturation. Slow-wave activity (SWA) of non-rapid eye movement (NREM) sleep electroencephalogram (EEG) is an electrophysiological index of sleep intensity reflecting cortical maturation. A...

Reward processing is a hypothesized ADHD intermediate phenotype and, as such, is suggested to improve prediction of relevant outcomes, above and beyond the clinical phenotype. Although both reward and punishment processing and ADHD are associated with CU traits, gaps in knowledge remain about adolescents, electrophysiological indices, and longitudi...

Understanding atypicalities in ADHD brain correlates is a step towards better understanding ADHD etiology. Efforts to map atypicalities at the level of brain structure have been hindered by the absence of normative reference standards. Recent publication of brain charts allows for assessment of individual variation relative to age- and sex-adjusted...

Background. Attention-deficit/hyperactivity disorder (ADHD) is associated with emotion dysregulation (ED) and in ADHD, beyond ADHD and comorbidity severity, ED confers increased risk for negative outcomes. First- and second-line ADHD pharmacotherapy is effective at ameliorating core symptoms and improving cognitive functioning and accumulating evid...

The family dog, in its natural environment, exhibits neuropsychological deficits redolent of human psychiatric disorders, including behaviours that are similar to human attention-deficit/hyperactivity disorder (ADHD) symptoms. Based on standard questionnaire methods in humans, we aimed to develop and validate a detailed, psychometrically improved t...

Emotion dysregulation (ED) is a key correlate and risk factor of a range of externalizing and internalizing disorders and symptoms and a core target for psychopharmacologic and psychosocial interventions. Adolescence is arguably the most important developmental period for acquisition of adaptive, adult-like emotion regulation skills and, as such, a...

Background. Understanding atypicalities in ADHD brain correlates is a step towards better understanding ADHD etiology. Efforts to map atypicalities at the level of brain structure have been hindered by the absence of normative reference standards. Recent publication of brain charts allows for assessment of individual variation relative to age- and...

Dogs live in a complex social environment where they regularly interact with conspecific and heterospecific partners. Awake dogs are able to process a variety of information based on vocalisations emitted by dogs and humans. Whether dogs are also able to process such information while asleep, is unknown. In the current explorative study, we investi...

Although atypical theta and alpha activity may be biomarkers of attention-deficit/hyperactivity disorder (ADHD) outcomes such as atypical affective processing and attention, the exact nature of the relations of these characteristics is unknown. We examined in age- and sex-matched adolescents (N = 132; Mage = 14.944, years, SD = .802) with and witho...

Attention-deficit/hyperactivity disorder (ADHD) is a heterogeneous disorder. Data on the role of transdiagnostic, intermediate phenotypes in ADHD-relevant characteristics and outcomes are needed to advance conceptual understanding and approaches to precision psychiatry. Specifically, the extent to which the association between neural response to re...

Background: Understanding the etiopathogenesis of attention-deficit/hyperactivity disorder (ADHD) may necessitate decomposition of the heterogeneous clinical phenotype into more homogeneous intermediate phenotypes. Reinforcement sensitivity is a promising candidate, but the exact nature of the ADHD-reward relation - including how, for whom, and to...

We evaluated event-related potential (ERP) indices of reinforcement sensitivity as ADHD biomarkers by examining, in N=306 adolescents (Mage=15.78, SD=1.08), the extent to which ERP amplitude and latency variables measuring reward anticipation and response (1) differentiate, in age- and sex-matched subsamples, (i) youth with vs. without ADHD, (ii) y...

Prenatal maternal stress is linked to offspring outcomes; however, there is little research on adolescents, behavioral, transdiagnostic outcomes, or the mechanisms through which relations operate. We examined, in N = 268 adolescents (Mage = 15.31 years; SD = 1.063; 57.8% boys) whether prenatal maternal stress is associated with adolescent affective...

Background The COVID-19 pandemic created unpredictable circumstances resulting in increased psychological strain. Here we investigate pandemic-related alterations in emotion regulation in adolescents assessed before and during the pandemic. We also take biological age into account in the response to the pandemic. Methods Mann-Whitney U tests were...

Aims Attention-Deficit/Hyperactivity Disorder (ADHD) is associated with alterations in both reinforcement sensitivity and affective processing but the nature of the associations of these characteristics is yet to be examined. We hypothesized that individual differences in the sensitivity of the Behavioral Approach System (BAS) would exhibit differe...

Aims Various genetic polymorphisms have been associated with attention-deficit/hyperactivity disorder (ADHD), and some of these have also been implicated in individual differences in affective processing. Yet, no studies to date have examined the complex interrelations across these genetic polymorphisms, ADHD, and affective processing. Several vari...

The family dog, in its natural environment, exhibits neuropsychological deficits redolent of human psychiatric disorders, including behaviours similar to human Attention-Deficit/Hyperactivity Disorder (ADHD) symptoms. For dogs, Vas and colleagues developed a 13-item questionnaire to measure inattention and hyperactivity/impulsivity (Dog ARS; 2007)....

Despite advantage of neuroimaging measures in translational research frameworks, less is known about the psychometric properties thereof, especially in middle-late adolescents. Earlier, we examined evidence of convergent and incremental validity of reward anticipation and response event-related potentials (ERPs) and here we examined, in the same sa...

Background: The COVID-19 pandemic created highly unpredictable circumstances which resulted in increased levels of psychological strain. Here we investigate pandemic-related alterations in emotion regulation in adolescents assessed before and during the pandemic. We also take biological age into account in the response to the pandemic.Methods: We c...

Age-related differences in dog sleep and the age at which dogs reach adulthood as indexed by sleep electrophysiology are unknown. We assessed, in (1) a Juvenile sample (n = 60) of 2–14-month-old dogs (weight range: 4–68 kg), associations between age, sleep macrostructure, and non-rapid eye movement (NREM) EEG power spectrum, whether weight moderate...

Emotion dysregulation (ED) is a transdiagnostic risk factor for several forms of psychopathology. One established, integrative conceptualisation of ED that has informed our understanding of psychopathology (Gratz, K. L., & Roemer, L. (2004). Multidimensional assessment of emotion regulation and dysregulation : development, factor structure, and ini...

To identify sources of phenotypic heterogeneity in attention-deficit/hyperactivity disorder (ADHD) accounting for diversity in developmen-tal/ pathogenic pathways, we examined, in a large sample of youth (N = 354), (a) associations between observed temperamental emotionality at age 3, an electrocortical index (i.e., reward positivity [RewP]) of ini...

Mobile touch screen devices (MTSDs; i.e., smartphones and tablets) are now being used at an early and neuroplastic age by an ever-growing number of children, with this use likely affecting cognitive development. In a cross-sectional study, we investigated whether frequent MTSD user preschoolers exhibit different attentional and socio-cognitive skil...

Adolescence is a developmental period characterized by heightened reward sensitivity which, in turn, confers risk for pertinent negative outcomes, underscoring the need to better understand biological bases and behavioral correlates of reward responsiveness during this developmental phase. Our goals in the current study were to examine, in a sample...

Background Adolescence marks the onset of substance use experimentation and adolescents are particularly vulnerable to certain negative effects of substances. Some evidence indicates reinforcement sensitivity is associated with substance use, though little is known about mechanisms underlying such association. Aims in the current study were to exa...

Conspecific-preference in social perception is evident for multiple sensory modalities and in many species. There is also a dedicated neural network for face processing in primates. Yet, the evolutionary origin and the relative role of neural species-sensitivity and face-sensitivity in visuo-social processing are largely unknown. In this comparativ...

Objectives Despite advances in understanding associations among attention‐deficit hyperactivity disorder (ADHD), emotion dysregulation (ED), and related outcomes, there is incongruity between ADHD‐relevant conceptualizations of ED and available measures of ED. To assess the psychometric properties of a parent‐report questionnaire of ED conceptualiz...

Az érintőképernyős mobileszközöket (ÉKM: okostelefonok és tabletek) egyre többet és egyre fiatalabb korban használják a gyerekek. Ekkor az agy még nagyon plasztikus, így az ÉKM-használat befolyásolhatja a kognitív fejlődést, ami új kihívásokat támaszt a szülőkkel és pedagógusokkal szemben. Egy keresztmetszeti vizsgálatban összehasonlítottuk az ÉKM-...

Certain companion animals’ relationship to humans is analogous to child–parent attachment. Further, pet-keeping is associated with less physical and psychological health problems and animal-assisted interventions ameliorate depressive symptoms. Accordingly, cognitive representations of pet-keeping and parenthood may be related, and pet-keeping may...

Mobile touch screen device (MTSDs) use is becoming widespread in children and has negative and positive consequences. Yet, factors associated with greater use remain unexplored, despite the importance of their identification for intervention purposes. It stands to reason that parents can influence child MTSD use, via their attitudes, beliefs, role-...

Cognitive biases, often used as indices of affective and emotional states, are associated with individual differences in personality in humans and have been observed in nonhuman animals, including dogs. Although dogs have complementary advantages over traditional animal models of human cognition, little is known about the relationship between dogs'...

In humans, behavioral disinhibition is associated with attention-deficit/hyperactivity disorder (ADHD). Limitations to rodent models of ADHD-like behaviors/symptoms may be augmented by complementary ones, such as the domestic dog. We examined associations between family dogs’ (N = 29; of 14 breeds and 12 mongrels) performance on a self-developed to...

Emotion dysregulation is associated with attention deficit/hyperactivity disorder (ADHD) and confers risk for behavior problems and functional impairment; however, there is little guidance on best practices for measurement in adolescents. We developed a parent-report version of the Difficulties in Emotion Regulation Scale (DERS-P)). Evidence of rel...

The domestic dog (Canis familiaris) is a promising animal model. Yet, the canine neuroscience literature is predominantly comprised of studies wherein (semi-)invasive methods and intensive training are used to study awake dog behavior. Given prior findings with humans and/or dogs, our goal was to assess, in 16 family dogs (1.5–7 years old; 10 males...

Although there is ample data indicating that reward processing plays an important role in human psychopathologies and pharmaco- and psychotherapy treatment response, the corresponding animal-model research needs to be extended to models whose motivational and social dispositions are better generalizable than those of the traditional models. Accordi...

The neural bases of emotion are commonly measured using blood-oxygen-level-dependent (BOLD) signal and the late positive potential (LPP) event-related potential (ERP) component, but rarely together in the same individuals. Despite evidence of developmental changes in processing socio-emotional signals (e.g., faces) as reflected by both BOLD and LPP...

Accumulating data from fMRI studies implicate the rostral anterior cingulate cortex (rACC) in inhibition of attention to threat distractors that compete with task-relevant goals for processing resources. However, little data is available on the reliability of rACC activation. Our aim in the current study was to examine test-retest reliability of rA...

The chapter “Emotion Regulation and Social Functioning in Adolescence: Conceptualization and Treatment,” in School Mental Health Services for Adolescents , is focused on the development of emotion regulation into adolescence and considers ways in which such development can go awry and result in emotion dysregulation (ED). The chapter argues that ED...

Childhood maltreatment and alcohol problems are common among young adults with attention-deficit hyperactivity disorder (ADHD). However, little is known about the degree to which maltreatment and alcohol problems are associated; potential pertinent mediating or moderating mechanisms, such as emotional lability; and whether this association varies b...

Although the Behavioral Inhibition System (BIS) is associated with threat-sensitivity, little is known about its neurofunctional correlates during cognitive control over task-irrelevant threat distractors. Thirty non-clinical participants, who ranged in BIS sensitivity, completed an attentional control paradigm during fMRI. The paradigm varied in c...

There is an ongoing need to improve animal models for investigating human behavior and its biological underpinnings. The domestic dog (Canis familiaris) is a promising model in cognitive neuroscience. However, before it can contribute to advances in this field in a comparative, reliable, and valid manner, several methodological issues warrant atten...

The mental health field has not been able to agree on a definition of what is arguably its core concept: mental disorder. Prior attempts at establishing a definition have been conceptual but not empirical, indicating a need for empirical investigation into key aspects of the meaning of this concept. Sixty advanced clinical psychology graduate stude...

Pediatric anxiety is associated with comorbid externalizing behaviors and social problems, and these associations may be related to altered emotion processing. The late positive potential (LPP), an event-related potential component, is a neural marker of emotion processing, and there is evidence that anxious youth exhibits enhanced LPPs to threaten...

Youth and adults with Attention-Deficit/Hyperactivity Disorder (ADHD) experience academic and social impairment and engage in risky behaviors. Emotion dysregulation (ED) is associated with ADHD and may contribute to these impairments and behaviors. Although many measures of ED exist, little is known about the physiological bases of ED, in the conte...

The symptoms and correlates of externalizing disorders place youth with those disorders at-risk for criminal offending. Indeed, externalizing disorders are among the most common psychiatric disorders among detained juvenile offenders. Thus, effective treatments, that are appropriate for both the population and for delivery in juvenile detention, ar...

Although cognitive-behavioral psychotherapy (CBT) and pharmacotherapy are evidence-based treatments for pediatric anxiety, many youth with anxiety disorders fail to respond to these treatments. Given limitations of clinical measures in predicting treatment response, identifying neural predictors is timely. In this study, 35 anxious youth (ages 7–19...

Individuals with attention-deficit/hyperactivity disorder (ADHD) experience impairments in a number of functional domains. Although current evidence-based treatments for ADHD reduce symptoms and improve academic and behavioral functioning, they have minimal impact on social functioning or on risky behaviors (see Evans et al. in J Clin Child Adolesc...

Individuals with attention-deficit/hyperactivity disorder (ADHD) experience impairments in a number of functional domains. Although current evidence-based treatments for ADHD reduce symptoms and improve academic and behavioral functioning, they have minimal impact on social functioning or on risky behaviors (see Evans et al. in J Clin Child Adolesc...

Preliminary evidence underscores links between attention-deficit hyperactivity disorder (ADHD) symptoms and intimate partner violence (IPV) perpetration and victimization. However, little is known about whether ADHD symptoms are uniquely associated with IPV perpetration and victimization beyond well-established risk factors of IPV commonly associat...

We analyzed the results of high school teachers' ratings of symptoms of attention deficit hyperactivity disorder (ADHD) and oppositional defiant disorder, as well as school-related impairment of 875 adolescents. One hundred forty-three teachers at 19 high schools across 4 states each rated 6 students from their first-period classes according to sel...

School impairment is often defined in terms of impairment in academic progress (i.e., poor grades). Poor academic performance can occur for several reasons, including poor homework completion, being off task during class lectures, and inefficient study habits. However, school impairment can include other factors such as a student's inability to int...

Background: Suicide has a devastating impact on both survivors and society, and many obstacles to improving prevention efforts stem from our inadequate understanding of suicidality. A potential source of this shortcoming is that the majority of empirical studies focus only on a single specified etiology of suicide. Aims: To address this limitation,...