Academic article
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Sverre Sanden; Jarle Eid; Sigurd William Hystad
(2026). Post-accident stress: strain from media and social ridicule as secondary stressors following a naval accident. (external link)
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Sebastian Brun Bjørkheim; Sigurd William Hystad; Bjørn Sætrevik
(2026). Relationship between perceived risk and compliance with infection control measures during the first year of a pandemic. (external link)
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Christoffer Andre Børsheim; Silje Mæland; Eirik Softeland
et al. (2026). Short-term outcomes of a micro-choice-based intervention for chronic low back pain: a quasi-experimental study. (external link)
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Sverre Sanden; Jarle Eid; Sigurd William Hystad
(2025). Predictors of acute stress disorder following a military maritime accident. (external link)
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Ane Wilhelmsen-Langeland; Karsten Amund Olson; Markus Rød Kjøde
et al. (2025). Concentrated micro choice-based treatment for type 2 diabetes is associated with decreased risk of sleep apnoea, less daytime sleepiness and lower insomnia symptoms. A non-randomized pre - post pilot study. (external link)
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Kristine Berg Titlestad; Jamison S. Bottomley; Sigurd William Hystad
et al. (2025). Prolonged Grief in Siblings Bereaved by Drug- Related Death and Help Services Experiences. (external link)
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Monika Alvestad Reime; Maja O’Connor; Sigurd William Hystad
et al. (2024). Perceived social support and symptoms of prolonged grief after a drug-related death. (external link)
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Sverre Sanden; Bjørn Helge Johnsen; Sigurd William Hystad
(2024). EARLY INTERVENTION AND RETURN-TO-WORK PROCEDURES FOR A NAVY CREW AFTER SHIPWRECK— USING MODIFIED PROLONGED EXPOSURE TO REESTABLISH OPERATIONAL CAPACITY. (external link)
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Ella Aase Anker; Svanhild Emilie Bøe Sture; Sigurd William Hystad
et al. (2024). The effect of physical activity on anxiety symptoms among children and adolescents with mental health disorders: a research brief. (external link)
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Gerd Kvale; Eirik Søfteland; Marte Jürgensen
et al. (2024). First trans-diagnostic experiences with a novel micro-choice based concentrated group rehabilitation for patients with low back pain, long COVID, and type 2 diabetes: a pilot study. (external link)
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Monika Alvestad Reime; Maja O’ Connor; Sigurd William Hystad
et al. (2024). Drug-Death Related Bereavement and Social Support. (external link)
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Ane Wilhelmsen-Langeland; Tore Børtveit; Marte Jürgensen
et al. (2024). Concentrated transdiagnostic and cross-disciplinary micro-choice based group treatment for patients with depression and with anxiety leads to lasting improvements after 12 months: a pilot study. (external link)
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Bjørn Helge Johnsen; Sigurd William Hystad
(2023). Hardiness and mental health during naval deployment: The relation is mediated by social processes and not by self-regulatory processes. (external link)
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Bjørn Helge Johnsen; Andreas Aalstad Nilsen; Sigurd William Hystad
et al. (2023). Selection of Norwegian police drone operators: an evaluation of selected cognitive tests from “The Vienna Test System". (external link)
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Olav Kjellevold Olsen; Sigurd William Hystad; Hans Jakob Bøe
et al. (2023). Long-term post traumatic growth after moral-and victim-traumas among Norwegian UN military peacekeepers: the impact of emotional distress and leadership.. (external link)
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Jostein Mattingsdal; Roar Espevik; Bjørn Helge Johnsen
et al. (2023). Exploring Why Police and Military Commanders Do What They Do: An Empirical Analysis of Decision-Making in Hybrid Warfare. (external link)
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Kristine Berg Titlestad; Pål Kristensen; Maja O'Connor
et al. (2022). Paths to positive growth in parents bereaved by drug-related death: A mixed-method study. (external link)
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Roar Espevik; Bjørn Helge Johnsen; Sigurd William Hystad
(2022). Police Dyads Within an Operational Simulation: an Empirical Test of the Research Propositions Made in the “Big Five” Teamwork Approach. (external link)
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Bjørn Helge Johnsen; Guttorm Brattebø; Roar Espevik
et al. (2022). The Effect of Complexity of Ambulance Missions on Shared Mental Models in Virtual Teams. (external link)
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Yngvild Sørebø Danielsen; Hanna Flækøy Skjåkødegård; Marit Mongstad Nybakk
et al. (2022). Objectively measured physical activity among treatment seeking children and adolescents with severe obesity and normal weight peers. (external link)
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Hanna Flækøy Skjåkødegård; Sigurd William Hystad; Ingvild Særvold Bruserud
et al. (2022). Perceived barriers in family-based behavioural treatment of paediatric obesity – Results from the FABO study. (external link)
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Gerd Kvale; Ane Wilhelmsen-Langeland; Marte Jürgensen
et al. (2022). Concentrated transdiagnostic and cross-disciplinary group treatment for patients with depression and with anxiety: a pilot study. (external link)
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Bente Frisk; Kiri Lovise Njøten; Bernt Bøgvald Aarli
et al. (2022). A novel concentrated, interdisciplinary group rehabilitation program for patients with chronic obstructive pulmonary disease: Protocol for a nonrandomized clinical intervention study. (external link)
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Hanna Flækøy Skjåkødegård; Rachel P. K. Conlon; Sigurd William Hystad
et al. (2022). Family-based treatment of children with severe obesity in a public healthcare setting: Results from a randomized controlled trial. (external link)
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Ella Aase Anker; Thea Sande; Kjersti Jorunn Arefjord
et al. (2022). The association between pain-related factors and psychological distress in patients with temporomandibular disorder. (external link)
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Ådne Gabriel Thomassen; Bjørn Helge Johnsen; Sigurd William Hystad
et al. (2021). Avoidance coping mediates the effect of hardiness on mental distress symptoms for both male and female subjects. (external link)
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Gerd Kvale; Bente Frisk; Marte Jürgensen
et al. (2021). Evaluation of novel concentrated interdisciplinary group rehabilitation for patients with chronic illnesses: Protocol for a nonrandomized clinical intervention study. (external link)
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Kristen Hagen; Håkon Nordahl; Gunvor Launes
et al. (2021). Does Concentrated Exposure Treatment for Obsessive-Compulsive Disorder Improve Insomnia Symptoms? Results From a Randomized Controlled Trial. (external link)
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Olav Kjellevold Olsen; Rino Bandlitz Johansen; Sigurd William Hystad
(2021). Do Ideals Differ and Matter? An Investigation of Authentic Leadership Ideals Among Norwegian Military Officers Across Generations – and Its Impact on Leadership Practice. (external link)
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Jenni Hellesøy Søbstad; Ståle Pallesen; Bjørn Bjorvatn
et al. (2021). Predictors of turnover intention among Norwegian nurses: A cohort study. (external link)
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Bjørn Sætrevik; Sigurd William Hystad
(2021). Ship Leadership, Situation Awareness, and Crew Safety Behaviour-Preregistered Replications in Two Survey Datasets. (external link)
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Hanna Flækøy Skjåkødegård; Yngvild Sørebø Danielsen; Bente Frisk
et al. (2020). Beyond sleep duration: Sleep timing as a risk factor for childhood obesity. (external link)
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Sigurd William Hystad; Bjørn Helge Johnsen
(2020). The dimensionality of the 12-item general health questionnaire (GHQ-12): Comparisons of factor structures and invariance across samples and time. (external link)
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Morten Nordmo; Sigurd William Hystad; Sverre Sanden
et al. (2020). Mental health during naval deployment: The protective role of family support. (external link)
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Olav Kjellevold Olsen; Philip van Heesch; Christian Søreide
et al. (2020). Trust After Just 45 Seconds? An Experimental Vignette Study of How Leader Behavior and Emotional States Influence Immediate Trust in Strangers. (external link)
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Gerd Kvale; Bjarne Hansen; Kristen Hagen
et al. (2020). Effect of D-Cycloserine on the Effect of Concentrated Exposure and Response Prevention in Difficult-to-Treat Obsessive-Compulsive Disorder: A Randomized Clinical Trial. (external link)
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Henrik Herrebrøden; Audun Grotterød; Sigurd William Hystad
(2019). External distractions and motor performance: A field study exploring the effects of mental toughness and extraversion on golf putting. (external link)
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Silje Elisabeth Hasmo Holm; Bjarne Hansen; Gerd Kvale
et al. (2019). Dispositional resilience in treatment‐seeking patients with obsessive‐compulsive disorder and its association with treatment outcome. (external link)
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Asle Makoto Sandvik; Espen Svendsen Gjevestad; Einar Aabrekk
et al. (2019). Physical fitness and psychological hardiness as predictors of parasympathetic control in response to stress: a Norwegian police simulator training study. (external link)
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Gunvor Launes; Kristen Hagen; Tor Sunde
et al. (2019). A randomized controlled trial of concentrated ERP, self-help and waiting list for obsessive- compulsive disorder: The Bergen 4-Day Treatment. (external link)
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Hilde Aarrestad Bekkeheien; Rakel Drønen Reigstad; Kari Dyregrov
et al. (2019). Sammenhengen mellom alkoholbruk og forlenget sorg hos nære etterlatte etter terrorangrepet på Utøya i 2011.. (external link)
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Helga Myrseth; Sigurd William Hystad; Reidar Säfvenbom
et al. (2018). Perception of specific military skills – the impact of perfectionism and self-efficacy. (external link)
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Olav Kjellevold Olsen; Anette Harris; Sigurd William Hystad
(2018). God under press. En operasjonalisering av moralsk robusthet i krevende operative Situasjoner. (external link)
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Ådne Gabriel Thomassen; Sigurd William Hystad; Bjørn Helge Johnsen
et al. (2018). The effect of hardiness on PTSD symptoms: A prospective mediational approach. (external link)
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Bjørn Sætrevik; Sigurd William Hystad
(2017). Situation awareness as a determinant for unsafe actions and subjective risk assessment on offshore attendant vessels. (external link)
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Henrik Herrebrøden; Espen Sand Sæbø; Sigurd William Hystad
(2017). Are Auditory Distractions Disturbing and Detrimental to the Performance of Expert Golfers? A Field Experiment. (external link)
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Hilde Sandhåland; Helle Asgjerd Oltedal; Sigurd William Hystad
et al. (2017). Effects of leadership style and psychological job demands on situation awareness and the willingness to take a risk: A survey of selected offshore vessels. (external link)
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Sunniva Skagen Wågø; Ida Kristiansen Byrkjedal; Hanna Marie Sinnes
et al. (2017). Social support and complicated grief : a longitudinal study on bereaved parents after the Utøya terror attack in Norway. (external link)
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Kjersti Bergheim; Jarle Eid; Sigurd William Hystad
et al. (2017). Does psychological capital moderate the relationship
between worries about accidents and sleepiness?. (external link)
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Sigurd William Hystad; Morten Birkeland Nielsen; Jarle Eid
(2017). The impact of sleep quality, fatigue and safety climate on the perceptions of accident risk among seafarers [L'impact de la qualite du sommeil, de la fatigue et du climat de securite sur la perception des risques d'accidents chez les marins]. (external link)
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Morten Nordmo; Sigurd William Hystad; Sverre Sanden
et al. (2017). The effect of hardiness on symptoms of insomnia during a naval mission. (external link)
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Bjørn Helge Johnsen; Roar Espevik; Evelyn Saus-Rose
et al. (2017). Hardiness as a Moderator and Motivation for Operational Duties as Mediator: the Relation Between Operational Self-Efficacy, Performance Satisfaction, and Perceived Strain in a Simulated Police Training Scenario. (external link)
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Paul T. Bartone; Bjørn Helge Johnsen; Jarle Eid
et al. (2017). Hardiness, avoidance coping and risky drinking in stress-exposed military personell: A mediation study. (external link)
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Sigurd William Hystad; Oyeniyi Samuel Olaniyan; Jarle Eid
(2016). Safe travel: Passenger assessment of trust and safety during seafaring. (external link)
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Sigurd William Hystad; Jarle Eid
(2016). Sleep and fatigue among seafarers: the role of environmental stressors, duration at sea and Psychological Capital. (external link)
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Oyeniyi Samuel Olaniyan; Sigurd William Hystad
(2016). Employees’ psychological capital, job satisfaction, insecurity, and intentions to quit: The direct and indirect effects of authentic leadership
[Capital psicológico, satisfacción laboral, inseguridad e intención de abandono de los trabajadores: efectos directos e indirectos del liderazgo auténtico]. (external link)
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Hilde Sandhåland; Helle Asgjerd Oltedal; Sigurd William Hystad
et al. (2015). Distributed situation awareness in complex collaborative systems: A field study of bridge operations on platform supply vessels. (external link)
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Sigurd William Hystad; Olav Kjellevold Olsen; Roar Espevik
et al. (2015). On the stability of psychological hardiness: A three-year longitudinal study. (external link)
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Asle Makoto Sandvik; Anita Lill Hansen; Sigurd William Hystad
et al. (2015). Psychopathy, anxiety, and resiliency – Psychological hardiness as a mediator of the psychopathy–anxiety relationship in a prison setting. (external link)
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Paul T. Bartone; Jarle Eid; Sigurd William Hystad
et al. (2015). Psychological Hardiness and Avoidance Coping Are Related to Risky Alcohol Use in Returning Combat Veterans. (external link)
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Ådne Gabriel Thomassen; Sigurd William Hystad; Bjørn Helge Johnsen
et al. (2015). The combined influence of hardiness and cohesion on mental health in a military peacekeeping mission: A prospective study. (external link)
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Morten Birkeland Nielsen; Sigurd William Hystad; Jarle Eid
(2015). The Brief Norwegian Safety Climate Inventory (Brief NORSCI) - Psychometric properties and relationships with shift work, sleep, and health. (external link)
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Hanne Cecilie Borgersen; Sigurd William Hystad; Ulf Gerry Larsson
et al. (2014). Authentic Leadership and Safety Climate Among Seafarers. (external link)
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Sigurd William Hystad; Kathryn Mearns; Jarle Eid
(2014). Moral disengagement as a mechanism between perceptions of organisational injustice and deviant work behaviours. (external link)
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Sigurd William Hystad; Paul T. Bartone; Jarle Eid
(2014). Positive organizational behavior and safety in the offshore oil industry: Exploring the determinants of positive safety climate. (external link)
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Helge Andreas Hoff; Knut Rypdal; Sigurd William Hystad
et al. (2014). Cross-language consistency of the comprehensive assessment of psychopathic personality (CAPP) model. (external link)
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Kjersti Bergheim; Jarle Eid; Sigurd William Hystad
et al. (2013). The Role of Psychological Capital in Perception of Safety Climate Among Air Traffic Controllers. (external link)
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Morten Birkeland Nielsen; Jarle Eid; Sigurd William Hystad
et al. (2013). A brief safety climate inventory for petro-maritime organizations. (external link)
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Sigurd William Hystad; Hege Høivik Bye
(2013). Safety behaviours at sea: The role of personal values and personality hardiness. (external link)
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Asle Makoto Sandvik; Paul T. Bartone; Sigurd William Hystad
et al. (2013). Psychological hardiness predicts neuroimmunological responses to stress. (external link)
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Bjørn Helge Johnsen; Sigurd William Hystad; Paul Bartone
et al. (2013). Hardiness Profiles: Defining Clusters of the Dispositional Resilience Scale and their Relation to Soldiers’ Health. (external link)
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Sigurd William Hystad; Evelyn Saus-Rose; Bjørn Sætrevik
et al. (2013). Fatigue in seafarers working in the offshore oil and gas re-supply industry: effects of safety climate, psychosocial work environment and shift arrangement. (external link)
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Bjørn Helge Johnsen; Paul T Bartone; Asle Makoto Sandvik
et al. (2013). Psychological hardiness predicts success in a Norwegian armed forces border patrol selection course. (external link)
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Sigurd William Hystad
(2012). Exploring gender equivalence and bias in a measure of psychological hardiness. (external link)
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Paul T Bartone; Sigurd William Hystad; Jarle Eid
et al. (2012). Psychological hardiness and coping style as risk/resilience factors for alcohol abuse. (external link)
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Sigurd William Hystad; Hege Høivik Bye
(2012). Dispositional pessimism but not optimism is related to sickness absence caused by musculoskeletal symptoms. (external link)
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Olav Kjellevold Olsen; Helga Myrseth; Are Eidhamar
et al. (2012). Psychometric properties of a four-component Norwegian organizational justice scale. (external link)
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Sigurd William Hystad; Jarle Eid; John Ivar Brevik
(2011). Effects of psychological hardiness, job demands, and job control on sickness absence: a prospective study. (external link)
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Sigurd William Hystad; Jarle Eid; Jon Christian Laberg
et al. (2011). Psychological hardiness predicts admission into Norwegian military officer schools. (external link)
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Sigurd William Hystad; Jarle Eid; Anita Lill Hansen
et al. (2010). An exploratory study of differences in emotional intelligence in U.S. and Norwegian undergraduate students. (external link)
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Asle Makoto Sandvik; Rune Gjeldnes; Sigurd William Hystad
et al. (2010). Psykologisk hardførhet predikerer soldaters motivasjonsutvikling under en 200 km lang skimarsj. (external link)
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Sigurd William Hystad; Jarle Eid; Bjørn Helge Johnsen
et al. (2010). Psychometric properties of the revised Norwegian dispositional resilience (hardiness) scale. (external link)
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Helge Molde; Sigurd William Hystad; Helga Myrseth
et al. (2010). Evaluating lifetime NODS using Rasch modelling. (external link)
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Sigurd William Hystad; Jarle Eid; Johnsen Bjørn Helge
et al. (2009). Psykologisk hardførhet: En revidert versjon av den norske "Hardiness"-skalaen. (external link)
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Helge Molde; Ståle Pallesen; Paul T Bartone
et al. (2009). Prevalence and correlates of gambling among 16 to 19-year old adolescents in Norway. (external link)
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Sigurd William Hystad; Jarle Eid; Jon Christian Laberg
et al. (2009). Academic Stress and Health: Exploring the Moderating Role of Personality Hardiness. (external link)
Academic book chapter
Academic literature review
Conference abstract
Conference lecture
Conference poster
Doctoral thesis (PhD)
Letter to the editor
Master’s thesis
Non-fiction book chapter
See a complete overview of publications in NVA.