Alexander Sumich

Alexander Sumich
Nottingham Trent University | NTU · Division of Psychology

PhD

About

147
Publications
47,242
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3,301
Citations

Publications

Publications (147)
Article
Full-text available
Our memories and past experiences contribute to guiding our perception and action of future affective experiences. Virtual Reality (VR) experiences are more vividly memorized and recalled than non-VR ones, but there is little research on how to detect this recall in VR. We investigate the feasibility of recognizing autobiographical memory (AM) reca...
Article
EEG microstates, reflecting discrete topographical organization of the EEG signal power, may have clinical relevance; however, their functional significance and test-retest reliability remain unclear. To investigate the functional significance of the canonical EEG microstate classes and their pairwise transitions, and to establish their within-sess...
Article
This paper represents the outcome of a multidisciplinary discussion on what works, what does not, and what can be improved, in ongoing work on biobehavioral taxonomies and their biomarkers. The authors of this paper, representing a wide spectrum of biobehavioral disciplines (clinical, developmental, differential psychology, neurophysiology, endocri...
Preprint
Successful psychopathy is characterized by core traits of callousness and interpersonal manipulation associated with clinical definitions of psychopathy, whilst largely being successful or adaptive in daily life. Despite rising interest in the field, the construct is still not well understood, partially due to competing theoretical models and the l...
Article
The concept of successful psychopathy has been debated for years, however, there is yet to be any unified approach to its definition and conceptualisation. Such individuals are said to encompass the core traits associated with psychopathy, whilst continuing to function in society, potentially having superior levels of functioning. This review assim...
Article
Background Network analysis provides opportunities to gain a greater understanding of the complex interplay of risk factors for depression and heterogeneous symptom presentations. This study used network analysis to discover risk factors associated with both depression severity and depression symptoms amongst Pacific adolescents in New Zealand. Me...
Article
Full-text available
Full understanding of temperament, personality and psychopathology must consider biological mechanisms beyond the brain. Over 4000 species of commensurate microbiota inhabit our bodies and influence almost all aspects of human physiological function. Evidence supports bidirectional relationships between the gut microbiome and brain function. For ex...
Article
Objective: Havening is a psychosensory therapeutic technique that purportedly harnesses the power of touch to stimulate oxytocin release and facilitate adaptive processing of distressing thoughts/memories. Although Havening is used in clinics worldwide, with anecdotal evidence, very few empirical studies exist to support its efficacy or mechanism o...
Article
Full-text available
Objectives Reinforcement Sensitivity Theory (RST) is a theory of motivation, emotion and learning, that has been translated into an account of personality. RST proposes neural structures that form the basis of systems responsible for reward (BAS), punishment (FFFS) and conflict processing (BIS). This systematic review collated studies examining p...
Article
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Virtual-reality (VR) therapy for anxiety disorders has emerged with the advent of VR technology. Its superior efficacy to waitlist and comparable efficacy to in vivo exposure therapy (Carl et al., 2019) make VR therapy a viable psychological intervention. VR therapy offers several accessibility benefits to encourage help-seeking among those who are...
Article
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Ubiquitous access to the internet is provided to students via WiFi to enhance their learning experience. Internet use is central to education, however when overused for distraction it can be problematic and negatively affect students’ academic performance and well-being. A spatial-temporal analysis of actual behaviour on a University WiFi examines...
Article
The personality construct known as 'Successful Psychopathy' has attracted the interests of researchers and clinicians alike. The concept suggests an individual who demonstrates the core traits associated with psychopathy but is able to adapt and function within society to prototypical or superior standards. There has yet to be a sound theoretical m...
Article
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Virtual reality (VR) is receiving widespread attention as a delivery tool for exposure therapies. The advantage offered by VR over traditional technology is a greater sense of presence and immersion, which magnifies user effects and enhances the effectiveness of exposure-based interventions. The current study systematically examined the basic facto...
Article
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Interpersonal coordination is a research topic that has attracted considerable attention this last decade both due to a theoretical shift from intra-individual to inter-individual processes and due to the development of new methods for recording and analyzing movements in ecological settings. Encompassing spatiotemporal behavioral matching, interpe...
Article
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Objective Prospective memory (PM) —the memory of delayed intentions— is impacted by age-related cognitive decline. The current event-related potential study investigates neural mechanisms underpinning typical and atypical (Mild Cognitive Impairment, MCI) age-related decline in PM. Methods Young adults (YA, n=30, age=24.7, female n=13), healthy old...
Article
Background Longitudinal neuroimaging provides spatiotemporal brain data (STBD) measurement that can be utilised to understand dynamic changes in brain structure and/or function underpinning cognitive activities. Making sense of such highly interactive information is challenging, given that the features manifest intricate temporal, causal relations...
Article
Full-text available
Objectives: Self-guided virtual-reality exposure therapy (VRET) is a psychological intervention that enables a person to increase their own exposure to perceived threat. Public-speaking anxiety (PSA) is an anxiety-provoking social situation that is characterized by fear of negative evaluation from an audience. This pilot study aimed to determine wh...
Article
Error monitoring allows for the efficient performance of goal-directed behaviors and successful learning. Furthermore, error monitoring as a metacognitive ability may play a crucial role for neuropsychological interventions, such as rehabilitation. In the past decades, research has suggested two electrophysiological markers for error monitoring: th...
Article
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At the beginning of this year, the UK government released a White Paper on Reforms of the 1983 Mental Health Act (MHA) aiming to achieve higher quality, accessible mental health care, as well as empowering people detained under MHA during the process and continuation of detention. In this piece, we focus on the potential impact of the proposal arou...
Article
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While evidence supports the feasibility of online mindfulness training (MT), the effect of this approach on cognition remains unclear. The present study investigated changes in cognition following a newly developed 6-week videoconference-delivered MT program on cognitive function in two groups. The first group (n = 17) had two baseline assessments...
Article
Aberrations in stress-linked hypothalamic-pituitary-adrenal axis function have been independently associated with schizophrenia, antisocial behaviour and childhood maltreatment. In this study, we examined pituitary volume (PV) in relation to childhood maltreatment (physical abuse, sexual abuse, neglect) in men (i) with schizophrenia and a history o...
Article
Prior research has focused on EEG differences across age or EEG differences across cognitive tasks/eye tracking. There are few studies linking age differences in EEG to age differences in behavioural performance which is necessary to establish how neuroactivity corresponds to successful and impaired ageing. Eighty-six healthy participants completed...
Chapter
In the framework of “togetherness” as a psychophysiological experience of social presence, the current chapter highlights the importance of work environments to socializing. The absence of such physical collective spaces impacts group-dynamics and team performance in online meetings, which also tend to prioritize task-solving discussions and limit...
Preprint
Full-text available
Communities are vital sources of support during crisis, providing collective contexts for shared identity and solidarity that predict supportive, prosocial responses. The COVID-19 pandemic has presented a global health crisis capable of exerting a heavy toll on the mental health of community members while inducing unwelcome levels of social disconn...
Article
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Objectives The 26-item Self-Compassion Scale (SCS) and its short 12-item version (SCS-SF) were reported to have acceptable psychometric properties, and both scales are widely used to assess self-compassion in individuals. However, recent investigations were inconsistent regarding factor structure of the SCS, and psychometric properties of the scale...
Article
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The current study examines the relationship between parental and intimate adult (best friend and partner) attachments with dark personality traits and empathy deficits in women. Participants (N = 262 females, M age = 26.65) completed self-report measures of the Dark Triad (DT) traits, cognitive and affective empathy, and attachment experiences in c...
Article
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Mindfulness training is associated with improvements in psychological wellbeing and cognition, yet the specific underlying neurophysiological mechanisms underpinning these changes are uncertain. This study uses a novel brain-inspired artificial neural network to investigate the effect of mindfulness training on electroencephalographic function. Par...
Article
A growing body of literature examining the neurocognitive processes of interpersonal linguistic interaction indicates the emergence of neural alignment as participants engage in oral communication. However, questions have arisen whether the study results can be interpreted beyond observations of cortical functionality and extended to the mutual und...
Article
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Background: A major problem in quantifying symptoms of schizophrenia is establishing a reliable distinction between enduring and dynamic aspects of psychopathology. This is critical for accurate diagnosis, monitoring and evaluating treatment effects in both clinical practice and trials. Materials and methods: We applied Generalisability Theory,...
Article
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A novel psychological construct characterised by high empathy and dark traits: the Dark Empath (DE) is identified and described relative to personality, aggression, dark triad (DT) facets and wellbeing. Participants (n = 991) were assessed for narcissism, Machiavellianism, psychopathy, cognitive empathy and affective empathy. Sub-cohorts also compl...
Article
The innate violence inhibition mechanism (VIM) purportedly regulates maladaptive aggressive behavior through motor inhibition, in response to expressions of distress, and is implicated in psychopathy-related aggression. Deficiency in eicosapentaenoic acid (EPA; an omega-3 fatty acid) is implicated in aggression and callous-unemotional (CU) traits,...
Article
Full-text available
The innate violence inhibition mechanism (VIM) purportedly regulates maladaptive aggressive behavior through motor inhibition, in response to expressions of distress, and is implicated in psychopathy-related aggression. Deficiency in eicosapentaenoic acid (EPA; an omega-3 fatty acid) is implicated in aggression and callous-unemotional (CU) traits,...
Preprint
Full-text available
The concept of successful psychopathy has been debated for years, however, there is yet no unified approach to its definition and conceptualisation. Such individuals are said to encompass the core traits associated with psychopathy, whilst continuing to function in society, potentially having superior levels of functioning. This review assimilates...
Article
Neurophysiological studies of Gaming Disorder (GD) and internet addiction (IA) are providing important insight into neurocognitive mechanisms underpinning these disorders, which will enable more accurate diagnostic classification. Electroencephalography (EEG) has been widely used to investigate addictive behaviours, and offers advantages of accessi...
Article
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Men and women reliably differ on the importance of certain criteria when considering romantic relationships. From an evolutionary perspective that explains sex differences in mating effort and parental investment, men should prioritise attractiveness and women, wealth. Personality traits also signal important information about relationship potentia...
Article
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Purpose of Review The playing of videogames has become an everyday occurrence among many adolescents and emerging adults. However, gaming can be problematic and potentially addictive and problematic gamers can experience co-occurring behavioral or substance use-related problems. The aims of the present review were to (i) determine the co-occurrence...
Article
Worry and rumination are forms of repetitive negative thinking (RNT) that are maintained by negative interpretations and a predominance of abstract, verbal thinking. Hence, facilitating more positive interpretations and imagery-based thinking in combination may reduce RNT. Study 1 administered interpretation training with and without enhanced image...
Article
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The tendency to interpret ambiguous information in a consistent (e.g., negative) manner (interpretation bias) may maintain worry. This study explored whether high and low worriers generate different interpretations and examined at which stages of information processing these interpretations can occur. Participants completed interpretation assessmen...
Article
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Rationale The gut-brain axis includes bidirectional communication between intestinal microbiota and the central nervous system. Bifidobacterium and Lactobacillus spp. have been implicated in psychological health, such as depression, through various pathways (e.g. inflammation). Research needs a better understanding of direct and indirect effects th...
Article
Full-text available
There has been substantial interest in Mindfulness Training (MT) to understand how it can benefit healthy individuals as well as people with a broad range of health conditions. Research has begun to delineate associated changes in brain function. However, whether measures of brain function can be used to identify individuals who are more likely to...
Article
Full-text available
Technology is increasingly being integrated into the provision of therapy and mental health interventions. While the evidence base for technology-led delivery of mindfulness-based interventions is growing, one approach to understand the effects of technology-delivered elements includes programs that retain some aspects of traditional face-to-face i...
Article
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The dark triad (DT) traits–psychopathy, narcissism and Machiavellianism–have collectively been linked to reduced empathy and increased aggression; however, their association with distinct empathic subtypes remains unclear; and unique links to indirect relational aggression (IRA) have not been delineated. Moreover, whether dark traits should be conc...
Article
Light-flicker Ganzfeld (LFG) induces a lower to upper-alpha frequency shift. However, it is unclear how this neurophysiological response might relate to LFG-induced pseudo-hallucinatory phenomena. It is also unknown whether emotional states (e.g., fear) or traits associated with risk for psychosis (e.g., proneness to perceptual anomalies, ability t...
Article
A robust relationship between working memory (WM) and general intelligence (g) has been well established. Nevertheless, explanations for this relationship in terms of underlying neurocognitive processes are still inadequate. This study addresses this issue using an individual differences approach in which Central Executive System (CES) and Short-Te...
Article
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Contemporary technological advances have led to a significant increase in using mobile technologies. Recent research has pointed to potential problems as a consequence of mobile overuse, including addiction, financial problems, dangerous use (i.e. whilst driving) and prohibited use (i.e. use in forbidden areas). The aim of this study is to extend p...
Article
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Familiarity of marketing stimuli may affect consumer behaviour at a peri-perceptual processing level. The current study introduces a method for deep learning of electroencephalogram (EEG) data using a spiking neural network (SNN) approach that reveals the complexity of peri-perceptual processes of familiarity. The method is applied to data from 20...
Article
Objective: Right frontal function, as indicated by the N200 component of the event-related potential during target detection, has previously been associated with excitement (excitement, impulsivity, hostility, uncooperativeness) in men with a long-term diagnosis of schizophrenia. The current study investigated excitement in relation to N200 in men...
Article
The violence inhibition mechanism (VIM) proposes that observing another's distress inhibits responses that can lead to violent behaviour. Dysfunction of this system is associated with disorders characterised by aggressive and callous-unemotional traits, such as psychopathy. This study examines electrophysiological indices of face processing and mot...
Article
Full-text available
Rationale: Chronic heroin use can cause deficits in response inhibition, leading to a loss of control over drug use, particularly in the context of drug-related cues. Unfortunately, heightened incentive salience and motivational bias in response to drug-related cues may exist following abstinence from heroin use. Objectives: The present study ai...
Article
Background: The distinction between temporary versus enduring or state/trait aspects of depression is important. More precise distinction would improve understanding of the aetiology of depression and those aspects most amenable to intervention thus identifying more homogeneous, dynamic targets for clinical trials. Generalizability Theory has been...
Article
Studies in clinical and aging populations support associations between immunological function, cognition and mood, although these are not always in line with animal models. Moreover, very little is known about the relationship between immunological measures and cognition in healthy young adults. The present study tested associations between the sta...
Conference Paper
Full-text available
Technology is increasingly being integrated into the provision of therapy and mental health interventions such as through the use of videoconferencing or other online methods to replace or supplement traditional face-to-face contact. Similarly, an increasing number of mindfulness-based interventions have trialed eTherapy or eHealth formats to explo...
Article
Full-text available
Due to its attributes, characteristics, and technological resources, the mobile phone (MP) has become one of the most commonly used communication devices. Historically, ample evidence has ruled out the substantial short-term impact of radiofrequency electromagnetic field (RF-EMF) emitted by MP on human cognitive performance. However, more recent ev...
Article
Full-text available
Depressive symptoms are common in schizophrenia, often left untreated, and associated with a high relapse rate, suicidal ideation, increased mortality, reduced social adjustment and poor quality of life. The neural mechanisms underlying depression in psychosis are poorly understood. Given reports of altered brain response to negative facial affect...
Article
Full-text available
Background: An abnormality in long chain-polyunsaturated fatty acid (LC-PUFA) levels has been implicated in attention-deficit/hyperactivity disorder (ADHD). Studies evaluating LC-PUFA supplementation for therapeutic efficacy in ADHD have shown mixed and, therefore, inconclusive results. Methods: Seventy-six male adolescents (age 12-16 years, mea...
Article
Full-text available
Rationale: An acute challenge with delta-9-tetrahydrocannabinol (THC) can induce psychotic symptoms including delusions. High electroencephalography (EEG) frequencies, above 20 Hz, have previously been implicated in psychosis and schizophrenia. Objectives: The objective of this study is to determine the effect of intravenous THC compared to plac...
Article
Persecutory delusions are common in schizophrenia and occur in 10–15% of the general population. Brain networks that regulate emotional awareness and recognition are implicated and might be reflected in event-related potential (ERP) indices of basic attention and discriminatory processes. N100, N200 and P300 were measured during an auditory oddball...
Article
Full-text available
Depressive symptoms in schizophrenia are common, more so in women, but associated neurobiological mechanisms are poorly understood. The current study investigated sex differences in the relationship between depression and brain function, as measured using event-related potentials (ERPs), in people with schizophrenia. Fourteen men and 14 women with...