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Løke, Daniel; Andelic, Nada; Helseth, Eirik; Vassend, Olav Mandt; Andersson, Stein & Ponsford, Jennie
[Vis alle 9 forfattere av denne artikkelen]
(2022).
Stability and Change in Biopsychosocial Factors Associated With Fatigue 6 and 12 Months After Traumatic Brain Injury: An Exploratory Multilevel Study.
The journal of head trauma rehabilitation.
ISSN 0885-9701.
38(4).
doi:
10.1097/HTR.0000000000000847.
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Hauge, Mariann Saanum; Storo, Bent; Vassend, Olav Mandt; Hoffart, Asle & Willumsen, Tiril
(2022).
Tannlegeadministrert kognitiv atferdsterapi versus «Fire gode vaner» – bruk av midazolam:
En randomisert kontrollert studie av behandling av tannbehandlingsangst i primær tannhelsetjeneste.
Den norske tannlegeforenings tidende.
ISSN 0029-2303.
132(8),
s. 626–636.
doi:
10.56373/2022-8-4.
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Løke, Daniel; Løvstad, Marianne; Andelic, Nada; Andersson, Stein; Ystrøm, Eivind & Vassend, Olav Mandt
(2022).
The role of pain and psychological distress in
fatigue: a co-twin and within-person analysis of
confounding and causal relations.
Health Psychology and Behavioral Medicine.
ISSN 2164-2850.
10(1),
s. 160–179.
doi:
10.1080/21642850.2022.2033121.
Fulltekst i vitenarkiv
Vis sammendrag
Objective: Fatigue is a common symptom in somatic and mental
illness. Musculoskeletal pain and psychological distress have in turn frequently been shown to be associated with fatigue across clinical conditions and in the general population. The study aims to disentangle direct effects from those due to mere confounding from shared etiologies.
Design: The study used genetically informative longitudinal twin data, through a co-twin control design with an additional within-person dimension.
Methods: Data on fatigue, pain and distress from 2196 mono –
and dizygotic twins from the Norwegian Twin Registry examined
at two time points five years apart was analyzed using multilevel generalized linear regression modeling. Fatigue was regressed on pain and distress, with further controls added for confounding from genetic and stable non-shared environmental sources.
Results: Pain and distress had a significant impact on fatigue at genetic, stable non-shared environmental and time-varying levels, even when controlling for somatic comorbidity.
Conclusion: The findings indicate that a significant proportion of the association between fatigue, pain and distress is due to genetic and environmental confounding. Pain and distress exert significant, albeit smaller effects on fatigue even when controlling for genetic and stable environmental contributions, indicating direct effects. Potential etiological pathways and underlying mechanisms are discussed.
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Melinder, Annika Maria D; Brennen, Timothy John; Husby, Mikael Falkhaugen & Vassend, Olav
(2020).
Personality, confirmation bias, and forensic interviewing performance.
Applied Cognitive Psychology.
ISSN 0888-4080.
doi:
10.1002/acp.3674.
Vis sammendrag
Confirmation bias is a universal characteristic of human cognition, with consequences for information processing and reasoning in everyday situations as well as in professional work such as forensic interviewing. Cognitive measures such as general intelligence are also related to personality traits, but there is a lack of research on personality and confirmation bias specifically. This study focuses, firstly, on the relationship between Big Five personality traits and confirmation bias as measured by the Wason selection task, and secondly, how these dispositions are related to observed performance in real forensic interviews of child victims. In a sample of police interviewers, Openness (i.e., the facets Ideas and Fantasy) and Neuroticism (i.e., the facets Anxiety and Vulnerability) were independently associated with confirmation bias (N = 72). Scores on the selection task, the Openness facet Values, and the Extraversion facets Assertiveness and Activity were consistently related to interview performance (N = 46). Implications of these findings are discussed for the empirical and conceptual relations of cognitive ability to personality and for the selection and training of police interviewers and their professional development.
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Kleppestø, Thomas Haarklau; Czajkowski, Nikolai Olavi; Vassend, Olav; Røysamb, Espen; Eftedal, Nikolai Haahjem & Sheehy-Skeffington, Jennifer
[Vis alle 8 forfattere av denne artikkelen]
(2019).
Correlations between social dominance orientation and political attitudes reflect common genetic underpinnings.
Proceedings of the National Academy of Sciences of the United States of America.
ISSN 0027-8424.
116(36),
s. 17741–17746.
doi:
10.1073/pnas.1818711116.
Fulltekst i vitenarkiv
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Vassend, Olav; Røysamb, Espen; Nielsen, Christopher Sivert & Czajkowski, Nikolai Olavi
(2018).
Fatigue symptoms in relation to neuroticism, anxiety-depression, and musculoskeletal pain. A longitudinal twin study.
PLOS ONE.
ISSN 1932-6203.
13(6).
doi:
10.1371/journal.pone.0198594.
Fulltekst i vitenarkiv
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Vassend, Olav; Røysamb, Espen; Nielsen, Christopher Sivert & Czajkowski, Nikolai Olavi
(2017).
Musculoskeletal Complaints, Anxiety–Depression Symptoms, and
Neuroticism: A Study of Middle-Aged Twins.
Health Psychology.
ISSN 0278-6133.
36(8),
s. 729–739.
doi:
10.1037/hea0000484.
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Carrozzino, Danilo; Vassend, Olav; Bjørndal, Flemming; Pignolo, Claudia; Raabæk Olsen, Lis & Bech, Per
(2016).
A clinimetric analysis of the Hopkins Symptom Checklist (SCL-90-R) in general population studies (Denmark, Norway, and Italy).
Nordic Journal of Psychiatry.
ISSN 0803-9488.
70(5),
s. 374–379.
doi:
10.3109/08039488.2016.1155235.
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Vassend, Olav; Orvik, Benedicte Humborstad; Czajkowski, Nikolai Olavi & Røysamb, Espen
(2016).
Facets of neuroticism and musculoskeletal symptoms.
A study of middle-aged twins.
Norsk Epidemiologi.
ISSN 0803-2491.
26(1-2),
s. 47–56.
doi:
10.5324/nje.v26i1-2.2015.
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Bech, P.; Carrozzino, D.; Austin, Stephen F.; Møller, Silje Bakke & Vassend, Olav
(2016).
Measuring euthymia within the Neuroticism Scale from the NEO Personality Inventory: A Mokken analysis of the Norwegian general population study for scalability.
Journal of Affective Disorders.
ISSN 0165-0327.
193,
s. 99–102.
doi:
10.1016/j.jad.2015.12.039.
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Vassend, Olav
(2015).
Personlighetstrekk i relasjon til psykisk og fysisk helse.
I Kennair, Leif Edward Ottesen & Hagen, Roger (Red.),
Personlighetspsykologi.
Fagbokforlaget.
ISSN 978-82-450-1715-1.
s. 191–217.
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Vassend, Olav; Røysamb, Espen & Nielsen, Christopher Sivert
(2013).
Five-factor personality traits and pain sensitivity: A twin study.
Pain.
ISSN 0304-3959.
154(5),
s. 722–728.
doi:
10.1016/j.pain.2013.01.010.
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Mohn, Christine; Vassend, Olav & Knardahl, Stein
(2012).
Cardiovascular responses to and modulation of pressure pain sensitivity in normotensive, pain-free women.
Scandinavian Journal of Pain.
ISSN 1877-8860.
3(3),
s. 165–169.
doi:
10.1016/j.sjpain.2011.12.001.
Vis sammendrag
Background and purpose:
The psychophysiological responses to and modulation of pressure pain stimulation are relatively new areas of investigation. The aims of the present study were to characterize subjective and cardiovascular (CV) responses to pressure pain stimulation, and to examine the relationship between CV responding and pain pressure pain sensitivity.
Methods:
Thirty-nine pain-free, normotensive women were included in the study and tested during the follicular phase of their menstrual cycles. Pain threshold and tolerance were recorded at the right masseter muscle and the sternum, and visual analogue scales (VAS) were used to rate both pain intensity (the sensory dimension) and discomfort (the affective dimension). Mean arterial pressure (MAP), heart rate (HR), and facial and digital skin blood flux (SBF) were registered continuously.
Results:
The pain threshold and tolerance were significantly higher at the sternum compared with the masseter, but the level of affective distress was higher at the masseter tolerance point. No associations emerged between pressure pain threshold and tolerance stimulation levels, and the corresponding VAS ratings. Pressure pain stimulation of the masseter induced significant increases in MAP, HR, and a decrease in digital SBF. During sternum pressure stimulation a significant change in HR and digital SBF was observed. There were no significant correlations between CV responding and pressure pain sensitivity.
Conclusion:
Healthy women seem to display higher pressure pain sensitivity at the masseter region relative to the sternum. Pressure pain stimulation was associated with significant changes in MAP, HR, and SBF, but was not modulated by CV responses. The validity of these findings is strengthened by our control for menstrual cycle events, weekend-related changes in physiology, and CV changes during pain stimulation.
Implications:
This study extends previous reports of SBF sensitivity to electrocutaneous pain into the field of pressure stimulation. Moreover, this study suggests that the often demonstrated association between high BP and low pain sensitivity may not apply to pressure pain specifically. Alternatively, this finding adds to the literature of gender differences in the relationship between CV responding and acute pain sensitivity in general.
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Mohn, Christine; Vassend, Olav & Knardahl, Stein
(2011).
Psychophysiological responses to pain stimulation and cognitive tasks in female temporomandibular disorder patients.
Scandinavian Journal of Pain.
ISSN 1877-8860.
2(2),
s. 72–82.
doi:
10.1016/j.sjpain.2010.12.001..
Vis sammendrag
Background and purpose Psychophysiological factors may contribute to the development of temporomandibular disorders (TMD). Both local orofacial and systemic responses have been investigated. However, most studies have concentrated on physiological responding during cognitive challenges, while responses during painful tasks may be highly relevant for the development of chronic pain conditions. Moreover, the relationship between experimental challenges and physiological responding may be influenced by affective responses during the experimental tasks, an issue not often considered in the literature. Methods This study compared electromyography (EMG) of the left masseter and left trapezius muscles, orofacial and digital skin blood-flow (SBF), mean arterial pressure (MAP), and heart rate (HR) at rest, during orofacial isometric contraction, electrocutaneous pain stimulation of the left hand, pressure pain stimulation of the masseter muscle and the sternum, and three cognitive tasks (reading aloud, a simulated job interview, and visuomotoric tracking). The participants were 25 TMD patients and 25 matched pain-free controls, all females. Affective responses were assessed with the State part of the State-Trait Personality Inventory and with Visual Analogue Scales. Results Masseter EMG levels were significantly lower in the TMD group relative to the control group during jaw contraction, pressure pain stimulation, the relaxation periods, and cognitive tasks. SBF, MAP, and HR responses were largely similar in the two groups, with SBF responses to pain stimulation evident at lower levels of stimulation than previously found. The TMD patients reported significantly higher levels of negative affect during the experiment. Conclusions and implications The low EMG responses in the TMD group may be taken in support of the Pain Adaptation Model of musculoskeletal pain, in which reduced muscular activity serves to protect a painful area. However, it may also be supportive of the Integrated Pain Adaptation Model, where higher central nervous structures influence local muscular output. The group similarities in systemic physiological responding in combination with the elevated levels of negative state affect in the TMD patients confirm previous reports of psychosocial differences being more reliable indicators of TMD than generalized physiological responding.
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Vassend, Olav; Quale, Anette Johansen; Røise, Olav & Schanke, Anne-Kristine
(2011).
Predicting the long-term impact of acquired severe injuries on functional health status: The role of optimism, emotional distress, and pain.
Spinal Cord.
ISSN 1362-4393.
49(12),
s. 1193–1197.
doi:
10.1038/sc.2011.70.
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Mohn, Christine; Vassend, Olav; Krogstad, Berit Heyerdahl & Knardahl, Stein
(2010).
Personality traits and subjective health complaints in female TMD patients and healthy controls.
The Open Pain Journal.
ISSN 1876-3863.
3,
s. 134–143.
Vis sammendrag
Abstract: Background: Personality traits and general health complaints may influence the course of and treatment of
chronic pain. However, only few studies compare more than one or two personality characteristics in chronic pain patients
and healthy controls. This study compares the comprehensive non-pathological personality structure of female patients
with temporomandibular disorders (TMD) and pain-free controls. Moreover, this study controls for the influence of Neuroticism, self-presentation bias, and acute pain sensitivity on the subjective report of general health complaints.
Methods: Twenty-five TMD patients were compared to 25 matched controls on personality traits (NEO Personality Inventory-Revised; NEO-PI-R), self-presentation bias (Social Desirability Scale; SDS), psychological distress (Symptom
Checklist 90-Revised; SCL-90-R), and general somatic complaints. Experimental pain sensitivity was assessed by electrocutaneous and pressure pain stimulation.
Results: Compared to the controls, Extraversion and Openness were lower in the TMD group, and the TMD patients exhibited higher levels of psychological and musculoskeletal complaints also when Neuroticism, self-presentation bias, and
acute pain sensitivity were held constant.
Conclusions: Low levels of Extraversion and Openness may dispose TMD patients to isolation and negative thought patterns. The elevated levels of psychological distress and general musculoskeletal pain in the TMD group add to previous
reports of TMD as a complex condition also involving structures and processes outside of the orofacial region.
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Nielsen, Christopher Sivert; Stubhaug, Audun; Price, Donald D; Vassend, Olav; Czajkowski, Nikolai & Harris, Jennifer
(2008).
Individual differences in pain sensitivity: Genetic and environmental contributions.
Pain.
ISSN 0304-3959.
136(1-2),
s. 21–29.
doi:
10.1016/j.pain.2007.06.008.
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Mohn, Christine; Vassend, Olav & Knardahl, Stein
(2008).
Experimental pain sensitivity in women with temporomandibular disorders and pain-free controls: the relationship to orofacial muscular contraction and cardiovascular responses.
The Clinical Journal of Pain.
ISSN 0749-8047.
24(4),
s. 343–352.
doi:
10.1097/AJP.0b013e318162eaf4.
Vis sammendrag
OBJECTIVE:
Chronic pain may result both from a generalized hypersensitivity to acute pain, suggestive of central sensitization processes, and dysfunction of the endogenous pain regulatory system. One purpose of this study was to compare experimental pain sensitivity at several anatomic sites in temporomandibular disorder (TMD) patients and pain-free controls during baseline and after standardized mechanical load of the orofacial region. A second purpose was to compare the pain-modulating effects of cardiovascular responses in TMD patients and pain-free controls.
METHODS:
Experimental pain was induced by electrocutaneous stimulation of the dorsal left hand and pressure algometry at the right masseter muscle and the sternum. The pain sensitivity of the orofacial region was manipulated by isometric contraction of the masseter muscles. Elevations of mean arterial pressure and heart rate were induced by a simulated job interview.
RESULTS:
At baseline, the TMD patients exhibited a significantly higher electrocutaneous pain threshold. Relative to the healthy controls, the TMD patients reported increased electrocutaneous and pressure pain sensitivity after isometric contraction of the orofacial region. In addition, there were correlations between mean arterial pressure and pain sensitivity in the TMD group only.
DISCUSSION:
Significant increases in generalized pain sensitivity occurred in the TMD group, but not in the control group, after isometric contraction of the orofacial muscles, suggestive of a central sensitization process in TMD. Moreover, only in the TMD group there were significant associations between cardiovascular responsesand pain sensitivity, challenging previous assumptions of this relationship occurring mainly in pain-free individuals.
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Watten, Reidulf G. & Vassend, Olav
(2005).
Personality and intelligence.
I Faleide, Asbjørn O. (Red.),
Selvregulering, personlighet og helse : et psykofysiologisk og psykosomatisk perspektiv.
Unipub forlag.
ISSN 82-7477-207-5.
s. 143–159.
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Vassend, Olav & Knardahl, Stein
(2005).
Effects of repeated electrocutaneous pain stimulation on facial blood flow.
Biological Psychology.
ISSN 0301-0511.
68,
s. 163–178.
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Nielsen, Christopher Sivert; Price, Donald D.; Vassend, Olav; Stubhaug, Audun & Harris, Jennifer R.
(2005).
Characterizing individual differences in heat-pain sensitivity.
Pain.
ISSN 0304-3959.
119(1-3),
s. 65–74.
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Vassend, Olav & Knardahl, Stein
(2004).
Cardiovascular responsiveness to brief cognitive challenges and pain sensitivity in women.
European Journal of Pain.
ISSN 1090-3801.
8,
s. 315–324.
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Willumsen, Tiril & Vassend, Olav
(2003).
Effects of cognitive therapy, applied relaxation and nitrous oxide sedation. A five-year follow-up study of patients treated for dental fear.
Acta Odontologica Scandinavica.
ISSN 0001-6357.
61,
s. 93–99.
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Willumsen, Tiril; Vassend, Olav & Hoffart, Asle
(2001).
One-year Follow-up of Patients Treated for Dental Fear: Effects of Cognitive Therapy, Applied Relaxation and Nitrous Oxide Sedation.
Acta Odontologica Scandinavica.
ISSN 0001-6357.
59,
s. 335–340.
Vis sammendrag
Effects of dental fear treatments were assessed in a one-year follow-up study. Sixty-two patients had finished a controlled study in which they were randomly allocated to nitrous oxide sedation (NO), cognitive therapy (CT) or applied relaxation (AR). During the trial, highly significant reductions in dental fear and general distress were observed. One year after, a majority (95%) of the participants had attended dental treatment in general practice. On the whole, continued favourable effects with regard to dental fear and general distress were observed. Patients in the applied relaxation group evidenced the largest reductions on the dental fear measures. All patients judged the dental fear treatment to have been beneficial, and 80% judged the treatment given in the year after the dental fear treatment as successful. All three treatment groups scored in the normative range for general distress at the end of treatment as well as at follow-up.
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Willumsen, Tiril; Vassend, Olav & Hoffart, Asle
(2001).
A Comparison of Cognitive Therapy, Applied Relaxation and Nitrous Oxide Sedation in the Treatment of Dental Fear.
Acta Odontologica Scandinavica.
ISSN 0001-6357.
59,
s. 290–296.
Vis sammendrag
The aim of this study was to investigate the short-term efficacy of cognitive therapy and applied relaxation in dental fear treatment, and to compare these methods with conventional pharmacological sedation (nitrous oxide sedation). Patients (n=65) suffering from severe dental fear were randomly assigned to the different treatment methods and received 10 weekly sessions of individual therapy. Drop-out rates were low, and all patients who completed the therapy sessions were able to receive dental treatment. Scores on dental fear tests were significantly reduced compared to pre-treatment level for all treatment groups. There were no major differences between treatment methods in this short time perspective.
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Vassend, Olav; Willumsen, Tiril & Hoffart, Asle
(2000).
Effects of dental fear treatment on general distress. The role of personality variables and treatment method.
Behavior Modification.
ISSN 0145-4455.
24(4),
s. 580–599.
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Vassend, Olav & Skrondal, Anders
(1999).
The role of negative affectivity in self-assessment of Health. A structural equation approach.
Journal of Health Psychology.
ISSN 1359-1053.
4(4),
s. 465–482.
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Vassend, Olav & Skrondal, Anders
(1999).
The problem of structural indeterminacy in multidimensional symptom report instruments. The case of SCL-90-R.
Behaviour Research and Therapy.
ISSN 0005-7967.
37,
s. 685–701.
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Vassend, Olav & Eskild, Anne
(1998).
Psychological distress, coping, and disease progression in HIV-positive homosexual men.
Journal of Health Psychology.
ISSN 1359-1053.
3(2),
s. 243–257.
Vis sammendrag
The objectives of the study were (1) to examine the role of coping styles in disease progression in models controlling for initial CD4+ cell counts, distress, and health behavior in a sample of HIV positive homosexual men (n = 65), and (2) to investigate the relationship between coping styles and distress (e.g. depression, anxiety, negative ruminations). A consistent association between planful problem-solving coping and disease progression was demonstrated. Distress was positively correlated with indicators of passive-defensive coping style (e.g. self-controlling, escape-avoidance), and negatively correlated with planful problem-solving and positive reappraisal. The results suggest that coping styles may merit a specific focus in future research of psychological factors in HIV infection, particularly as they may relate to both medical outcome and social/emotional aspects of being HIV infected.
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Vassend, Olav; Eskild, Anne & Halvorsen, Ragnhild
(1997).
Negative affectivity, coping, immune status, and disease progression in HIV infected individuals.
Psychology and Health.
ISSN 0887-0446.
12,
s. 375–388.
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Vassend, Olav & Skrondal, Anders
(1997).
Validation of the NEO Personality Inventory and the five-factor model. Can findings from exploratory and confirmatory factor analysis be reconciled?
European Journal of Personality.
ISSN 0890-2070.
11,
s. 147–166.
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Watten, Reidulf G.; Vassend, Olav; Myhrer, Trond & Syversen, Jon-Lars
(1997).
Personality factors and somatic symptoms.
European Journal of Personality.
ISSN 0890-2070.
11,
s. 57–68.
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Krogstad, Berit Schie; Jokstad, Asbjørn; Dahl, Bjørn L. & Vassend, Olav
(1996).
The reporting of pain, somatic complaints, and anxiety in a group of TMD-patients before and after two years treatment. Sex differences.
Journal of Orofacial Pain.
ISSN 1064-6655.
10,
s. 263–269.
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Krogstad, Berit Schie; Jokstad, Asbjørn; Dahl, Bjørn L. & Vassend, Olav
(1996).
Relationships between risk factors and treatment outcome in a group of patients with Temporomandibular disorders.
Journal of Orofacial Pain.
ISSN 1064-6655.
10,
s. 48–53.
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Vassend, Olav & Skrondal, Anders
(1995).
Factor analytic studies of the NEO Personality Inventory and the five-factor model: The problem of high structural complexity and conceptual indeterminacy.
Personality and Individual Differences.
ISSN 0191-8869.
19,
s. 135–147.
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Vassend, Olav; Krogstad, Berit Schie & Dahl, Bjørn
(1995).
Negative affectivity, somatic complaints, and symptoms of temporomandibular disorders.
Journal of Psychosomatic Research.
ISSN 0022-3999.
39,
s. 889–899.
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Wisløff, T.F.; Vassend, Olav & Asmyhr, Ø.
(1995).
Dental anxiety, utilization of dental services, and DMFS status in Norwegian military recruits.
Community Dental Health.
ISSN 0265-539X.
12,
s. 100–103.
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Watten, Reidulf G.; Vassend, Olav; Syversen, Jon-Lars & Myhrer, Trond
(1995).
Personality and quality of life.
Social Indicators Research.
ISSN 0303-8300.
35,
s. 289–302.
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Vassend, Olav
(1994).
Negative affectivity, subjective somatic complaints, and objective health indicators. Mind and body still separated?
I Maes, Stan; Leventhal, Harold & Johnston, Marie (Red.),
International Review of Health Psychology, Volume 3.
John Wiley & Sons.
ISSN 978-0-471-94456-0.
s. 97–118.
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Vassend, Olav; Watten, Reidulf G.; Myhrer, Trond & Syvertsen, Jon Lars
(1994).
Negative affectivity and intellectual ability: A study of their relation to self-reported physical symptoms, perceived daily stress and mood, and disciplinary problems in military recruits.
Social Science and Medicine.
ISSN 0277-9536.
39(4),
s. 583–590.
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Lian, Lilleba; Vassend, Olav Mandt & Andersen, Harald T.
(1993).
Norske versjoner av NEO-Personality Inventory, Symptom Checklist 90 Revised og Giessen Subjective Complaints List.
Del II.
.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
30,
s. 117–126.
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Vassend, Olav Mandt; Lian, Lilleba & Andersen, Harald T.
(1992).
Norske versjoner av NEO-Personality Inventory, Symptom Checklist 90 Revised og Giessen Subjective Complaints List.
Del I.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
29(29),
s. 1150–1160.
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Grytten, Jostein Ivar; Holst, Dorthe ; Rossow, Ingeborg; Vassend, Olav & Wang, Nina J.
(1990).
Nytt om befolkningens tenner og tannhelse.
Den norske tannlegeforenings tidende.
ISSN 0029-2303.
100,
s. 414–422.
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Vassend, Olav
(1989).
Dimensions of negative affectivity, self-reported somatic symptoms, and health-related behaviors.
Social Science and Medicine.
ISSN 0277-9536.
28,
s. 29–36.
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-
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Vassend, Olav & Halvorsen, Ragnhild
(1987).
Personality, examination stress and serum concentrations of immunoglobulins.
Scandinavian Journal of Psychology.
ISSN 0036-5564.
28,
s. 233–241.
-
Halvorsen, Ragnhild & Vassend, Olav
(1987).
Effects of examination stress on some cellular immunity functions.
Journal of Psychosomatic Research.
ISSN 0022-3999.
31,
s. 693–701.
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Vassend, Olav; Halvorsen, Ragnhild & Norman, Nils
(1987).
Hormonal and psychological effects of examination stress.
Scandinavian Journal of Psychology.
ISSN 0036-5564.
28,
s. 75–82.
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Vassend, Olav
(1987).
Personality, imaginative involvement, and self-reported somatic complaints. Relevance to the concept of alxithymia.
Psychotherapy and Psychosomatics.
ISSN 0033-3190.
47,
s. 74–81.
-
-
Vassend, Olav Mandt
(1986).
Psykoimmunologi: Teorier og forskning.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
23,
s. 221–233.
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Vassend, Olav
(1985).
Psykosomatikkbegrepet. Forsøk på en avgrensning.
Agrippa - psykiatriske tekster.
ISSN 0106-0457.
4,
s. 251–262.
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Vassend, Olav
(1985).
Begreper og teoridannelse i psykosomatisk forskning. Noen utvalgte emner. Del II.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
22,
s. 613–626.
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Vassend, Olav
(1985).
Begreper og teoridannelse i psykosomatisk forskning. Noen utvalgte emner. Del I.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
22,
s. 549–560.
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Vassend, Olav
(1985).
Somatiske og psykologiske aspekter ved asthma bronchiale hos barn.
Nordisk Psykiatrisk Tidsskrift.
ISSN 0029-1455.
39,
s. 493–500.
-
Vassend, Olav
(1985).
Hypnose og psykoanalytisk orientert terapi. Noen generelle problemer og prinsipper.
Nordisk Psykiatrisk Tidsskrift.
ISSN 0029-1455.
39,
s. 29–36.
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Vassend, Olav
(1984).
Paradoksal familieterapi. Teori, prinsipper og teknikker.
Fokus på familien.
ISSN 0332-5415.
12,
s. 67–85.
-
Vassend, Olav
(1984).
Sykdom, familie og mestring.
Fokus på familien.
ISSN 0332-5415.
12,
s. 187–201.
-
Vassend, Olav
(1983).
Psykologiske metoder ved behandling av pasienter med asthma bronchiale. En litteraturoversikt.
Tidsskrift for Norsk Psykologforening.
ISSN 0332-6470.
20,
s. 520–531.
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Vassend, Olav
(1983).
Det ubevisste og selv-innsikt. En filosofisk undersøkelse.
Agrippa - psykiatriske tekster.
ISSN 0106-0457.
5,
s. 261–281.
-
Vassend, Olav; Bjærke, Stian & Faleide, Asbjørn O.
(1983).
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