Thanos Karatzias
Biographic Data
| ID | 240171 |
|---|---|
| NAME | Thanos Karatzias |
| GIVEN NAMES | Thanos |
| FAMILY NAME | Karatzias |
| SIGNATURE | KARATZIAS T |
| AFFILIATIONS | Edinburgh Napier University |
| ORCID | 0000-0002-3002-0630 |
| VERIFIED | Yes |
| TOTAL WORKS | 26 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 26 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2018 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
The development and initial psychometric evaluation of the Centrality of Loss Scale (CLS) in a national sample of bereaved adults from Poland
Centrality of loss reflects the extent to which the death of a loved one becomes a central reference point, shaping thoughts, emotions, identity, and daily activity. We developed the Centrality of Loss Scale (CLS) and tested its psychometric properties and incremental association with grief severity beyond bereavement context. A national sample of bereaved Polish adults (N = 886; 51.0% female) completed the CLS alongside measures of prolonged gri…
The relationship between different forms of childhood abuse and subsequent body dysmorphic disorder and complex PTSD symptoms among Israeli women
217) were classified as having a history of childhood abuse. Background variables, BDD symptoms, and the classification and symptoms of PTSD and complex PTSD were assessed online via self-report measures. Results indicated elevated BDD scores in childhood abuse survivors and relationships between symptoms of BDD, PTSD, and DSO in childhood abuse survivors. Levels of emotional abuse served as a trans-diagnostic risk factor for PTSD, DSO, and BDD s…
Are ‘time’ and ‘culture’ useful and necessary diagnostic requirements for ICD-11 Prolonged Grief Disorder? A Cross-national study
ICD-11 PGD can only be diagnosed if symptoms persist beyond 6 months after bereavement and for longer than would be expected from societal, cultural, or religious norms. This study examined the validity and utility of these diagnostic requirements using self-report cross-sectional data from samples of bereaved adults from the United Kingdom (UK; n = 1,012), Ireland (Ireland; n = 1,011), and Ontario ( n = 1,167). PGD symptoms and rates of probable…
Assessing peri-loss emotions and their associations with ICD-11 prolonged grief disorder and posttraumatic stress disorder in a community sample of bereaved adults
Previous studies have examined risk factors for ICD-11 Prolonged Grief Disorder (PGD) but the variation and levels of peri-loss emotional reactions (those occurring during or immediately after the loss), and their association with grief related distress, has received little attention. This study is the first to assess retrospectively reported peri-loss emotional responses and their associations with ICD-11 PGD and PTSD in a large, bereaved adult …
Physical, mental, and behavioral health after adverse and benevolent childhood experiences: A comparison of two adversity conceptualizations
Public health responses to ACEs should consider both the accumulation and co-occurrence of ACE exposure. Schools, neighborhoods, and the wider community should take an active role in helping children and families create more positive experiences as a universal prevention strategy to safeguard population health. (PsycInfo Database Record (c) 2025 APA, all rights reserved)
Self-harm, Suicide, and ICD-11 Complex Posttraumatic Stress Disorder in Treatment-Seeking Adolescents with Major Depression
Posttraumatic stress disorder (PTSD) is linked with self-harm and suicide, but few studies have examined these severe outcomes in relation to complex trauma. This study examined the associations between self-harm and suicide-related phenomena with ICD-11 complex PTSD (CPTSD) among treatment-seeking youths. A convenience sample of 109 adolescents with major depression (69.7% female; mean age = 15.24) were recruited from an outpatient psychiatric c…
The psychological burden of bereavement in the general population of UK and Ireland
This study examined the experiences of loss among bereaved adults, and the association between loss-related factors and mental health outcomes. Participants were 2023 bereaved adults from the United Kingdom and Ireland who completed measures of their bereavement experiences and symptoms of depression, anxiety, and somatization. The highest proportion of participants and those at greatest risk of meeting criteria for all disorders were those with …
Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’
There is a burgeoning evidence base highlighting the positive influence of benevolent childhood experiences (BCEs), even in the context of adversity. However, few measures are available to assess BCEs. The current study sought to develop and validate a measure which assesses positive recollections of experiences and emotions at home and with family during childhood called the ‘Memories of Home and Family Scale’(MHFS). Confirmatory factor analysis…
Validation of the Ukrainian caregiver-report version of the Child and Adolescent Trauma Screen (Cats) in children and adolescents in Ukraine
This study supports the psychometric properties of the Ukrainian parent-reported CATS which can be used routinely in clinical practice for the caregiver-rated assessment of PTSD. (PsycInfo Database Record (c) 2025 APA, all rights reserved)
Factor structure of the international trauma questionnaire in trauma exposed LGBTQ+ adults: Role of cumulative traumatic events and minority stress heterosexist experiences
This is the first study to examine the role of minority stressors alongside exposure to psychological traumas in ICD-11 PTSD and CPTSD and emphasizes the inclusion of minority stressors in trauma-related assessments. (PsycInfo Database Record (c) 2023 APA, all rights reserved)
ICD-11 PTSD and complex PTSD in Lithuanian university students: Prevalence and associations with trauma exposure
The findings of our study show that nearly 8 in 10 university students were exposed to trauma at the beginning of their studies. The prevalence of probable PTSD/CPTSD was comparable to other studies conducted on the general population and university students. (PsycInfo Database Record (c) 2023 APA, all rights reserved)
Parent-reported posttraumatic stress reactions in children and adolescents: Findings from the mental health of parents and children in Ukraine study
Russia's war escalation in Ukraine resulted in an increased estimated prevalence of war-related PTSD in children of various ages. Urgent efforts to increase the capacity of national pediatric mental health services are critically needed to mitigate these challenges in an environment of limited financial and human resources. (PsycInfo Database Record (c) 2024 APA, all rights reserved)
How is loneliness related to anxiety and depression: A population‐based network analysis in the early lockdown period
High risk of mental health problems is associated with loneliness resulting from social distancing measures and “lockdowns” that have been imposed globally due to the COVID‐19 pandemic. This study explores the interconnectedness of loneliness, anxiety and depression on a symptom level using network analysis. A representative sample of participants ( N = 1041), who were of at least 18 years of age, was recruited from the Republic of Ireland (ROI).…
The role of psychosocial factors in explaining sex differences in major depression and generalized anxiety during the Covid-19 pandemic
Observed sex-differences in depression and anxiety during the COVID-19 pandemic in the Republic of Ireland are best explained by psychosocial factors of COVID-19 related anxiety, trait neuroticism, lower sleep quality, higher levels of loneliness, greater somatic problems, and, in the case of depression, increases in childcaring responsibilities and lower trait consciousnesses. Implications of these findings for public health policy and intervent…
Psychological characteristics associated with Covid-19 vaccine hesitancy and resistance in Ireland and the United Kingdom
Identifying and understanding COVID-19 vaccine hesitancy within distinct populations may aid future public health messaging. Using nationally representative data from the general adult populations of Ireland ( N = 1041) and the United Kingdom (UK; N = 2025), we found that vaccine hesitancy/resistance was evident for 35% and 31% of these populations respectively. Vaccine hesitant/resistant respondents in Ireland and the UK differed on a number of …
Commentary: The need for research on PTSD in Children and adolescents – a commentary on Elliot et al. (2020)
The recent release of the 11th version of The International Classification of Diseases (ICD‐11: WHO, 2018) marked a significant departure from the previous similarities between it and the Diagnostic and Statistical Manual of Mental Disorders (DSM‐5; APA, 2013) in terms of their conceptualization of posttraumatic stress disorder (PTSD). The ICD‐11 proposed a reduced symptom set for PTSD and a sibling disorder called Complex PTSD. There have been n…
The Authoritarian Dynamic During the Covid-19 Pandemic: Effects on Nationalism and Anti-Immigrant Sentiment
Research has demonstrated that situational factors such as perceived threats to the social order activate latent authoritarianism. The deadly COVID-19 pandemic presents a rare opportunity to test whether existential threat stemming from an indiscriminate virus moderates the relationship between authoritarianism and political attitudes toward the nation and out-groups. Using data from two large nationally representative samples of adults in the Un…
Posttraumatic Stress Disorder and Persistent Somatic Symptoms During the Covid-19 Pandemic: The Role of Sense of Threat
OBJECTIVE: Persistent somatic symptoms, such as pain and fatigue, have been referred to as somatization. Somatization is commonly associated with histories of trauma and posttraumatic stress disorder (PTSD). Although previous research has demonstrated that PTSD can predict somatic problems, there has been no examination of this at the level of PTSD symptom clusters and multidimensional assessment of somatic symptoms. We examined the association b…
Moral injury and ICD-11 complex PTSD (CPTSD) symptoms among treatment-seeking veterans in the United Kingdom
Overall, the two sets of findings suggest the special relevance of MI among veterans who are struggling with CPTSD. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
Anxiety and depression in the Republic of Ireland during the Covid‐19 pandemic
BACKGROUND: The COVID-19 pandemic in Ireland resulted in a nationwide quarantine on March 27, 2020. This study represents the first assessment of rates of anxiety and depression in the general population of Ireland during the pandemic. AIMS: Our first aim was to estimate the probable prevalence rates of generalized anxiety disorder (GAD) and depression and to identify sociodemographic risk factors associated with screening positive for GAD or dep…
Anxiety, depression, traumatic stress and Covid-19-related anxiety in the UK general population during the Covid-19 pandemic
Background The COVID-19 pandemic has created an unprecedented global crisis, necessitating drastic changes to living conditions, social life, personal freedom and economic activity. No study has yet examined the presence of psychiatric symptoms in the UK population under similar conditions. Aims We investigated the prevalence of COVID-19-related anxiety, generalised anxiety, depression and trauma symptoms in the UK population during an early phas…
Can subjective perceptions of trauma differentiate between ICD-11 PTSD and complex PTSD? A cross-cultural comparison of three African countries
Background: The primary aim of the current study was to establish the cutoffs scores for the Subjective Traumatic Outlook (STO), a relatively new tool that examines the introspective worldview of those exposed to traumatic events. This tool was developed as a complementary scale to be used in conjunction with the observed-phenomenological measures of posttraumatic stress disorder (PTSD) complex PTSD (CPTSD). The present study examines the predict…
Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM–5
Certain non-Criterion A events involving extreme fear and horror should be considered traumatic. The ICD-11 approach of providing clinical guidance rather than a formal definition offers a viable solution to some of the problems associated with the current and previous attempts to define traumatic exposure. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
A Randomised Controlled Trial of a Caregiver-Facilitated Problem-Solving Based Self-Learning Program for Family Carers of People with Early Psychosis
Facilitated self-help and problem-solving strategies can empower and support family carers to cope with caregiving for people with severe mental illnesses. This single-blind multi-site randomised controlled trial examined the effects of a five-month family-facilitated problem-solving based self-learning program (PBSP in addition to usual care), versus a family psychoeducation group program and usual psychiatric care only in recent-onset psychosis…
Positive Changes and Appreciation of Life Among Economic Immigrants in Scotland
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The International Trauma Questionnaire: Development of a self‐report measure of ICD‐11 PTSD and complex PTSD
OBJECTIVE: The purpose of this study was to finalize the development of the International Trauma Questionnaire (ITQ), a self-report diagnostic measure of post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD), as defined in the 11th version of the International Classification of Diseases (ICD-11). METHOD: The optimal symptom indicators of PTSD and CPTSD were identified by applying item response theory (IRT) analysis to data from a trauma-…
Anxiety and depression in the Republic of Ireland during the Covid‐19 pandemic
BACKGROUND: The COVID-19 pandemic in Ireland resulted in a nationwide quarantine on March 27, 2020. This study represents the first assessment of rates of anxiety and depression in the general population of Ireland during the pandemic. AIMS: Our first aim was to estimate the probable prevalence rates of generalized anxiety disorder (GAD) and depression and to identify sociodemographic risk factors associated with screening positive for GAD or dep…
Anxiety, depression, traumatic stress and Covid-19-related anxiety in the UK general population during the Covid-19 pandemic
Background The COVID-19 pandemic has created an unprecedented global crisis, necessitating drastic changes to living conditions, social life, personal freedom and economic activity. No study has yet examined the presence of psychiatric symptoms in the UK population under similar conditions. Aims We investigated the prevalence of COVID-19-related anxiety, generalised anxiety, depression and trauma symptoms in the UK population during an early phas…
Can subjective perceptions of trauma differentiate between ICD-11 PTSD and complex PTSD? A cross-cultural comparison of three African countries
Background: The primary aim of the current study was to establish the cutoffs scores for the Subjective Traumatic Outlook (STO), a relatively new tool that examines the introspective worldview of those exposed to traumatic events. This tool was developed as a complementary scale to be used in conjunction with the observed-phenomenological measures of posttraumatic stress disorder (PTSD) complex PTSD (CPTSD). The present study examines the predict…
Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM–5
Certain non-Criterion A events involving extreme fear and horror should be considered traumatic. The ICD-11 approach of providing clinical guidance rather than a formal definition offers a viable solution to some of the problems associated with the current and previous attempts to define traumatic exposure. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
A Randomised Controlled Trial of a Caregiver-Facilitated Problem-Solving Based Self-Learning Program for Family Carers of People with Early Psychosis
Facilitated self-help and problem-solving strategies can empower and support family carers to cope with caregiving for people with severe mental illnesses. This single-blind multi-site randomised controlled trial examined the effects of a five-month family-facilitated problem-solving based self-learning program (PBSP in addition to usual care), versus a family psychoeducation group program and usual psychiatric care only in recent-onset psychosis…
Positive Changes and Appreciation of Life Among Economic Immigrants in Scotland
Psychological characteristics associated with Covid-19 vaccine hesitancy and resistance in Ireland and the United Kingdom
Identifying and understanding COVID-19 vaccine hesitancy within distinct populations may aid future public health messaging. Using nationally representative data from the general adult populations of Ireland ( N = 1041) and the United Kingdom (UK; N = 2025), we found that vaccine hesitancy/resistance was evident for 35% and 31% of these populations respectively. Vaccine hesitant/resistant respondents in Ireland and the UK differed on a number of …
Commentary: The need for research on PTSD in Children and adolescents – a commentary on Elliot et al. (2020)
The recent release of the 11th version of The International Classification of Diseases (ICD‐11: WHO, 2018) marked a significant departure from the previous similarities between it and the Diagnostic and Statistical Manual of Mental Disorders (DSM‐5; APA, 2013) in terms of their conceptualization of posttraumatic stress disorder (PTSD). The ICD‐11 proposed a reduced symptom set for PTSD and a sibling disorder called Complex PTSD. There have been n…
The Authoritarian Dynamic During the Covid-19 Pandemic: Effects on Nationalism and Anti-Immigrant Sentiment
Research has demonstrated that situational factors such as perceived threats to the social order activate latent authoritarianism. The deadly COVID-19 pandemic presents a rare opportunity to test whether existential threat stemming from an indiscriminate virus moderates the relationship between authoritarianism and political attitudes toward the nation and out-groups. Using data from two large nationally representative samples of adults in the Un…
Posttraumatic Stress Disorder and Persistent Somatic Symptoms During the Covid-19 Pandemic: The Role of Sense of Threat
OBJECTIVE: Persistent somatic symptoms, such as pain and fatigue, have been referred to as somatization. Somatization is commonly associated with histories of trauma and posttraumatic stress disorder (PTSD). Although previous research has demonstrated that PTSD can predict somatic problems, there has been no examination of this at the level of PTSD symptom clusters and multidimensional assessment of somatic symptoms. We examined the association b…
Moral injury and ICD-11 complex PTSD (CPTSD) symptoms among treatment-seeking veterans in the United Kingdom
Overall, the two sets of findings suggest the special relevance of MI among veterans who are struggling with CPTSD. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
How is loneliness related to anxiety and depression: A population‐based network analysis in the early lockdown period
High risk of mental health problems is associated with loneliness resulting from social distancing measures and “lockdowns” that have been imposed globally due to the COVID‐19 pandemic. This study explores the interconnectedness of loneliness, anxiety and depression on a symptom level using network analysis. A representative sample of participants ( N = 1041), who were of at least 18 years of age, was recruited from the Republic of Ireland (ROI).…
The role of psychosocial factors in explaining sex differences in major depression and generalized anxiety during the Covid-19 pandemic
Observed sex-differences in depression and anxiety during the COVID-19 pandemic in the Republic of Ireland are best explained by psychosocial factors of COVID-19 related anxiety, trait neuroticism, lower sleep quality, higher levels of loneliness, greater somatic problems, and, in the case of depression, increases in childcaring responsibilities and lower trait consciousnesses. Implications of these findings for public health policy and intervent…
Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’
There is a burgeoning evidence base highlighting the positive influence of benevolent childhood experiences (BCEs), even in the context of adversity. However, few measures are available to assess BCEs. The current study sought to develop and validate a measure which assesses positive recollections of experiences and emotions at home and with family during childhood called the ‘Memories of Home and Family Scale’(MHFS). Confirmatory factor analysis…
Validation of the Ukrainian caregiver-report version of the Child and Adolescent Trauma Screen (Cats) in children and adolescents in Ukraine
This study supports the psychometric properties of the Ukrainian parent-reported CATS which can be used routinely in clinical practice for the caregiver-rated assessment of PTSD. (PsycInfo Database Record (c) 2025 APA, all rights reserved)
Factor structure of the international trauma questionnaire in trauma exposed LGBTQ+ adults: Role of cumulative traumatic events and minority stress heterosexist experiences
This is the first study to examine the role of minority stressors alongside exposure to psychological traumas in ICD-11 PTSD and CPTSD and emphasizes the inclusion of minority stressors in trauma-related assessments. (PsycInfo Database Record (c) 2023 APA, all rights reserved)
ICD-11 PTSD and complex PTSD in Lithuanian university students: Prevalence and associations with trauma exposure
The findings of our study show that nearly 8 in 10 university students were exposed to trauma at the beginning of their studies. The prevalence of probable PTSD/CPTSD was comparable to other studies conducted on the general population and university students. (PsycInfo Database Record (c) 2023 APA, all rights reserved)
Parent-reported posttraumatic stress reactions in children and adolescents: Findings from the mental health of parents and children in Ukraine study
Russia's war escalation in Ukraine resulted in an increased estimated prevalence of war-related PTSD in children of various ages. Urgent efforts to increase the capacity of national pediatric mental health services are critically needed to mitigate these challenges in an environment of limited financial and human resources. (PsycInfo Database Record (c) 2024 APA, all rights reserved)
Physical, mental, and behavioral health after adverse and benevolent childhood experiences: A comparison of two adversity conceptualizations
Public health responses to ACEs should consider both the accumulation and co-occurrence of ACE exposure. Schools, neighborhoods, and the wider community should take an active role in helping children and families create more positive experiences as a universal prevention strategy to safeguard population health. (PsycInfo Database Record (c) 2025 APA, all rights reserved)
Self-harm, Suicide, and ICD-11 Complex Posttraumatic Stress Disorder in Treatment-Seeking Adolescents with Major Depression
Posttraumatic stress disorder (PTSD) is linked with self-harm and suicide, but few studies have examined these severe outcomes in relation to complex trauma. This study examined the associations between self-harm and suicide-related phenomena with ICD-11 complex PTSD (CPTSD) among treatment-seeking youths. A convenience sample of 109 adolescents with major depression (69.7% female; mean age = 15.24) were recruited from an outpatient psychiatric c…
The psychological burden of bereavement in the general population of UK and Ireland
This study examined the experiences of loss among bereaved adults, and the association between loss-related factors and mental health outcomes. Participants were 2023 bereaved adults from the United Kingdom and Ireland who completed measures of their bereavement experiences and symptoms of depression, anxiety, and somatization. The highest proportion of participants and those at greatest risk of meeting criteria for all disorders were those with …
Are ‘time’ and ‘culture’ useful and necessary diagnostic requirements for ICD-11 Prolonged Grief Disorder? A Cross-national study
ICD-11 PGD can only be diagnosed if symptoms persist beyond 6 months after bereavement and for longer than would be expected from societal, cultural, or religious norms. This study examined the validity and utility of these diagnostic requirements using self-report cross-sectional data from samples of bereaved adults from the United Kingdom (UK; n = 1,012), Ireland (Ireland; n = 1,011), and Ontario ( n = 1,167). PGD symptoms and rates of probable…
Assessing peri-loss emotions and their associations with ICD-11 prolonged grief disorder and posttraumatic stress disorder in a community sample of bereaved adults
Previous studies have examined risk factors for ICD-11 Prolonged Grief Disorder (PGD) but the variation and levels of peri-loss emotional reactions (those occurring during or immediately after the loss), and their association with grief related distress, has received little attention. This study is the first to assess retrospectively reported peri-loss emotional responses and their associations with ICD-11 PGD and PTSD in a large, bereaved adult …
The development and initial psychometric evaluation of the Centrality of Loss Scale (CLS) in a national sample of bereaved adults from Poland
Centrality of loss reflects the extent to which the death of a loved one becomes a central reference point, shaping thoughts, emotions, identity, and daily activity. We developed the Centrality of Loss Scale (CLS) and tested its psychometric properties and incremental association with grief severity beyond bereavement context. A national sample of bereaved Polish adults (N = 886; 51.0% female) completed the CLS alongside measures of prolonged gri…
Psychology (20 works) · Clinical Psychology (19 works) · Psychiatry (16 works) · Medicine (13 works) · Clinical Psychology (12 works) · Mental health (9 works) · Posttraumatic Stress Disorder Research (8 works) · Migration, Health and Trauma (6 works) · Population (6 works) · Anxiety (5 works)