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  • 1.
    Bas-Hoogendam, Janna Marie
    et al.
    Leiden Univ, Inst Psychol, Wassenaarseweg 52, NL-2333 AK Leiden, Netherlands.;Leiden Univ, Med Ctr, Dept Psychiat, Leiden, Netherlands.;Leiden Inst Brain & Cognit, Leiden, Netherlands..
    van Steenbergen, Henk
    Leiden Univ, Inst Psychol, Wassenaarseweg 52, NL-2333 AK Leiden, Netherlands.;Leiden Inst Brain & Cognit, Leiden, Netherlands..
    Pannekoek, J. Nienke
    Imperial Coll London, Div Brain Sci, Ctr Psychiat, Neuropsychopharmacol Unit, London, England..
    Fouche, Jean-Paul
    Univ Cape Town, Dept Psychiat & Mental Hlth, Cape Town, South Africa..
    Lochner, Christine
    UCT MRC Unit Anxiety & Stress Disorders, Cape Town, South Africa.;Univ Stellenbosch, Dept Psychiat, Tygerberg, South Africa..
    Hattingh, Coenraad J.
    Univ Cape Town, Dept Psychiat & Mental Hlth, Cape Town, South Africa..
    Cremers, Henk R.
    Univ Amsterdam, Dept Clin Psychol, Amsterdam, Netherlands..
    Furmark, Tomas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Stockholm Univ, Dept Psychol, Stockholm, Sweden.;Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden..
    Frick, Andreas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden..
    Engman, Jonas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Boraxbekk, Carl-Johan
    Umea Univ, Umea Ctr Funct Brain Imaging UFBI, Umea, Sweden.;Copenhagen Univ Hosp Hvidovre, Ctr Funct & Diagnost Imaging & Res, DRCMR, Hvidovre, Denmark..
    Carlbring, Per
    Stockholm Univ, Dept Psychol, Stockholm, Sweden..
    Andersson, Gerhard
    Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden.;Linkoping Univ, Dept Behav Sci & Learning Psychol, Linkoping, Sweden..
    Fredrikson, Mats
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden..
    Straube, Thomas
    Univ Munster, Inst Med Psychol & Syst Neurosci, Munster, Germany..
    Peterburs, Jutta
    Univ Munster, Inst Med Psychol & Syst Neurosci, Munster, Germany..
    Klumpp, Heide
    Univ Illinois, Dept Psychiat, Chicago, IL USA.;Univ Illinois, Dept Psychol, Chicago, IL USA..
    Phanp, K. Luan
    Univ Illinois, Dept Psychiat, Chicago, IL USA.;Univ Illinois, Dept Psychol, Chicago, IL USA..
    Roelofs, Karin
    Radboud Univ Nijmegen, Behav Sci Inst, Nijmegen, Netherlands.;Radboud Univ Nijmegen, Donders Inst Brain Cognit & Behav, Nijmegen, Netherlands..
    Veltman, Dick J.
    Vrije Univ Amsterdam, Med Ctr, Dept Psychiat, Neurosci Campus Amsterdam, Amsterdam, Netherlands..
    van Tol, Marie-Jose
    Univ Groningen, Univ Med Ctr Groningen, Dept Neurosci, Groningen, Netherlands..
    Stein, Dan J.
    Univ Cape Town, Dept Psychiat & Mental Hlth, Cape Town, South Africa.;UCT MRC Unit Anxiety & Stress Disorders, Cape Town, South Africa..
    van der Wee, Nic J. A.
    Leiden Univ, Med Ctr, Dept Psychiat, Leiden, Netherlands.;Leiden Inst Brain & Cognit, Leiden, Netherlands..
    Voxel-based morphometry multi-center mega-analysis of brain structure in social anxiety disorder2017Inngår i: NeuroImage: Clinical, ISSN 0353-8842, E-ISSN 2213-1582, Vol. 16, s. 678-688Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Social anxiety disorder (SAD) is a prevalent and disabling mental disorder, associated with significant psychiatric comorbidity. Previous research on structural brain alterations associated with SAD has yielded inconsistent results concerning the direction of the changes in graymatter (GM) in various brain regions, as well as on the relationship between brain structure and SAD-symptomatology. These heterogeneous findings are possibly due to limited sample sizes. Multisite imaging offers new opportunities to investigate SAD-related alterations in brain structure in larger samples. An international multi-center mega-analysis on the largest database of SAD structural T1-weighted 3T MRI scans to date was performed to compare GM volume of SAD-patients (n = 174) and healthy control (HC)-participants (n = 213) using voxel-based morphometry. A hypothesis-driven region of interest (ROI) approach was used, focusing on the basal ganglia, the amygdala-hippocampal complex, the prefrontal cortex, and the parietal cortex. SAD-patients had larger GM volume in the dorsal striatum when compared to HC-participants. This increase correlated positively with the severity of self-reported social anxiety symptoms. No SAD-related differences in GM volume were present in the other ROIs. Thereby, the results of this mega-analysis suggest a role for the dorsal striatum in SAD, but previously reported SAD-related changes in GM in the amygdala, hippocampus, precuneus, prefrontal cortex and parietal regions were not replicated. Our findings emphasize the importance of large sample imaging studies and the need for meta-analyses like those performed by the Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Consortium.

  • 2.
    Faria, Vanda
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Center for Pain and the Brain, Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
    Gingnell, Malin
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    M. Hoppe, Johanna
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Hjorth, Olof
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Alaie, Iman
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Barn- och ungdomspsykiatri.
    Frick, Andreas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
    Hultberg, Sara
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Wahlstedt, Kurt
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Engman, Jonas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.; Department of Psychology, Stockholm University, Stockholm, Sweden.
    Carlbring, Per
    Department of Psychology, Stockholm University, Stockholm, Sweden.
    Andersson, Gerhard
    Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden.
    Reis, Margareta
    Department of Medical and Health Sciences, Division of Drug Research, Linköping University, Linköping, Sweden.
    Larsson, Elna-Marie
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Fredrikson, Mats
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
    Furmark, Tomas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Do You Believe It? Verbal Suggestions Influence the Clinical and Neural Effects of Escitalopram in Social Anxiety Disorder: A Randomized Trial2017Inngår i: EBioMedicine, ISSN 0360-0637, E-ISSN 2352-3964, nr 24, s. 179-188, artikkel-id S2352-3964(17)30385-7Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed for depression and anxiety, but their efficacy relative to placebo has been questioned. We aimed to test how manipulation of verbally induced expectancies, central for placebo, influences SSRI treatment outcome and brain activity in patients with social anxiety disorder (SAD).

    METHODS: We did a randomized clinical trial, within an academic medical center (Uppsala, Sweden), of individuals fulfilling the DSM-IV criteria for SAD, recruited through media advertising. Participants were 18years or older and randomized in blocks, through a computer-generated sequence by an independent party, to nine weeks of overt or covert treatment with escitalopram (20mg daily). The overt group received correct treatment information whereas the covert group was treated deceptively with the SSRI described, by the psychiatrist, as active placebo. The treating psychiatrist was necessarily unmasked while the research staff was masked from intervention assignment. Treatment efficacy was assessed primarily with the self-rated Liebowitz Social Anxiety Scale (LSAS-SR), administered at week 0, 1, 3, 6 and 9, also yielding a dichotomous estimate of responder status (clinically significant improvement). Before and at the last week of treatment, brain activity during an emotional face-matching task was assessed with functional magnetic resonance imaging (fMRI) and during fMRI sessions, anticipatory speech anxiety was also assessed with the Spielberger State-Trait Anxiety Inventory - State version (STAI-S). Analyses included all randomized patients with outcome data at posttreatment. This study is registered at ISRCTN, number 98890605.

    FINDINGS: Between March 17th 2014 and May 22nd 2015, 47 patients were recruited. One patient in the covert group dropped out after a few days of treatment and did not provide fMRI data, leaving 46 patients with complete outcome data. After nine weeks of treatment, overt (n=24) as compared to covert (n=22) SSRI administration yielded significantly better outcome on the LSAS-SR (adjusted difference 21.17, 95% CI 10.69-31.65, p<0.0001) with more than three times higher response rate (50% vs. 14%; χ(2)(1)=6.91, p=0.009) and twice the effect size (d=2.24 vs. d=1.13) from pre-to posttreatment. There was no significant between-group difference on anticipatory speech anxiety (STAI-S), both groups improving with treatment. No serious adverse reactions were recorded. On fMRI outcomes, there was suggestive evidence for a differential neural response to treatment between groups in the posterior cingulate, superior temporal and inferior frontal gyri (all z thresholds exceeding 3.68, p≤0.001). Reduced social anxiety with treatment correlated significantly with enhanced posterior cingulate (z threshold 3.24, p=0.0006) and attenuated amygdala (z threshold 2.70, p=0.003) activity.

    INTERPRETATION: The clinical and neural effects of escitalopram were markedly influenced by verbal suggestions. This points to a pronounced placebo component in SSRI-treatment of SAD and favors a biopsychosocial over a biomedical explanatory model for SSRI efficacy.

    FUNDING RESOURCES: The Swedish Research Council for Working Life and Social Research (grant 2011-1368), the Swedish Research Council (grant 421-2013-1366), Riksbankens Jubileumsfond - the Swedish Foundation for Humanities and Social Sciences (grant P13-1270:1).

  • 3.
    Frick, Andreas
    et al.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Stockholm Univ, Dept Psychol, Stockholm, Sweden.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Stockholm Univ, Dept Psychol, Stockholm, Sweden;Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden.
    Brain changes in social anxiety disorder run in the family2018Inngår i: EBioMedicine, E-ISSN 2352-3964, Vol. 36, s. 5-6Artikkel i tidsskrift (Annet vitenskapelig)
  • 4.
    Goodwin, Guy M.
    et al.
    Univ Oxford, Univ Dept Psychiat, Oxford OX3 7JX, England.;Warneford Hosp, Oxford Hlth NHS Trust, Oxford OX3 7JX, England..
    Holmes, Emily A.
    Karolinska Inst, Dept Clin Neurosci, SE-17177 Stockholm, Sweden..
    Andersson, Erik
    Karolinska Inst, Dept Clin Neurosci, SE-17177 Stockholm, Sweden..
    Browning, Michael
    Univ Oxford, Univ Dept Psychiat, Oxford OX3 7JX, England.;Warneford Hosp, Oxford Hlth NHS Trust, Oxford OX3 7JX, England..
    Jones, Andrew
    Univ Liverpool, Psychol Sci, Bedford St South, Liverpool L697ZA, Merseyside, England..
    Lass-Hennemann, Johanna
    Saarbrucken Univ, Dept Psychol, Div Clin Psychol & Psychotherapy, D-66123 Saarbrucken, Germany..
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Dept Clin Neurosci, SE-17177 Stockholm, Sweden.;Stockholm Univ, Dept Psychol, SE-10691 Stockholm, Sweden..
    Moessnang, Carolin
    Heidelberg Univ, Med Fac Mannheim, Cent Inst Mental Hlth, J5, D-68159 Mannheim, Germany..
    Salemink, Elske
    Univ Amsterdam, Dept Psychol, Nieuwe Achtergracht 129B, Amsterdam, Netherlands..
    Sanchez, Alvaro
    Univ Ghent, Dept Expt Clin & Hlth Psychol, Henri Dunantlaan 2, B-9000 Ghent, Belgium..
    van Zutphen, Linda
    Maastricht Univ, Dept Clin Psychol Sci, Fac Psychol & Neurosci, Univ Singel 40, NL-6229 ER Maastricht, Netherlands..
    Visser, Renee M.
    Univ Cambridge, MRC, Cognit & Brain Sci Unit, 15 Chaucer Rd, Cambridge CB2 7EF, England..
    From neuroscience to evidence based psychological treatments - The promise and the challenge, ECNP March 2016, Nice, France2018Inngår i: European Neuropsychopharmacology, ISSN 0924-977X, E-ISSN 1873-7862, Vol. 28, nr 2, s. 317-333Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This ECNP meeting was designed to build bridges between different constituencies of mental illness treatment researchers from a range of backgrounds with a specific focus on enhancing the development of novel, evidence based, psychological treatments. In particular we wished to explore the potential for basic neuroscience to support the development of more effective psychological treatments, just as this approach is starting to illuminate the actions of drugs. To fulfil this aim, a selection of clinical psychologists, psychiatrists and neuroscientists were invited to sit at the same table. The starting point of the meeting was the proposition that we know certain psychological treatments work, but we have only an approximate understanding of why they work. The first task in developing a coherent mental health science would therefore be to uncover the mechanisms (at all levels of analysis) of effective psychological treatments. Delineating these mechanisms, a task that will require input from both the clinic and the laboratory, will provide a key foundation for the rational optimisation of psychological treatments. As reviewed in this paper, the speakers at the meeting reviewed recent advances in the understanding of clinical and cognitive psychology, neuroscience, experimental psychopathology, and treatment delivery technology focussed primarily on anxiety disorders and depression. We started by asking three rhetorical questions: What has psychology done for treatment? What has technology done for psychology? What has neuroscience done for psychology? We then addressed how research in five broad research areas could inform the future development of better treatments: Attention, Conditioning, Compulsions and addiction, Emotional Memory, and Reward and emotional bias. Research in all these areas (and more) can be harnessed to neuroscience since psychological therapies are a learning process with a biological basis in the brain. Because current treatment approaches are not fully satisfactory, there is an imperative to understand why not. And when psychological therapies do work we need to understand why this is the case, and how we can improve them. We may be able to improve accessibility to treatment without understanding mechanisms. But for treatment innovation and improvement, mechanistic insights may actually help. Applying neuroscience in this way will become an additional mission for ECNP.

  • 5.
    Han, Laura K. M.
    et al.
    Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Publ Hlth Res Inst, Dept Psychiat, Oldenaller 1, Netherlands;Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Neurosci, Dept Psychiat, Boelelaan 1117, Amsterdam, Netherlands.
    Verhoeven, Josine E.
    Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Publ Hlth Res Inst, Dept Psychiat, Oldenaller 1, Netherlands.
    Tyrka, Audrey R.
    Brown Univ, Butler Hosp, Providence, RI 02912 USA;Brown Univ, Warren Alpert Med Sch, Dept Psychiat & Human Behav, Providence, RI 02912 USA.
    Penninx, Brenda W. J. H.
    Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Publ Hlth Res Inst, Dept Psychiat, Oldenaller 1, Netherlands;Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam Neurosci, Dept Psychiat, Boelelaan 1117, Amsterdam, Netherlands.
    Wolkowitz, Owen M.
    Univ Calif San Francisco, Sch Med, Dept Psychiat, San Francisco, CA USA;Univ Calif San Francisco, Sch Med, Weill Inst Neurosci, San Francisco, CA USA.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Dept Psychol, Stockholm, Sweden;.
    Lindqvist, Daniel
    Univ Calif San Francisco, Sch Med, Dept Psychiat, San Francisco, CA USA;Lund Univ, Dept Clin Sci, Fac Med, Psychiat, Lund, Sweden;Psychiat Clin, Div Psychiat, Lund, Sweden.
    Boks, Marco P.
    Univ Med Ctr Utrecht, Dept Psychiat, Brain Ctr Rudolf Magnus, Utrecht, Netherlands.
    Revesz, Dora
    Tilburg Univ, Dept Med & Clin Psychol, Ctr Res Psychol Somat Dis CoRPS, Tilburg, Netherlands.
    Mellon, Synthia H.
    Univ Calif San Francisco, Sch Med, Dept Psychiat, San Francisco, CA USA;Univ Calif San Francisco, Sch Med, Weill Inst Neurosci, San Francisco, CA USA.
    Picard, Martin
    Columbia Univ, Med Ctr, Div Behav Med, Dept Psychiat, New York, NY 10027 USA;Columbia Univ, Med Ctr, Columbia Translat Neurosci Initiat, Dept Neurol,H Houston Merritt Ctr, New York, NY USA;Columbia Univ, Columbia Aging Ctr, New York, NY USA.
    Accelerating research on biological aging and mental health: Current challenges and future directions2019Inngår i: Psychoneuroendocrinology, ISSN 0306-4530, E-ISSN 1873-3360, Vol. 106, s. 293-311Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Aging is associated with complex biological changes that can be accelerated, slowed, or even temporarily reversed by biological and non-biological factors. This article focuses on the link between biological aging, psychological stressors, and mental illness. Rather than comprehensively reviewing this rapidly expanding field, we highlight challenges in this area of research and propose potential strategies to accelerate progress in this field. This effort requires the interaction of scientists across disciplines - including biology, psychiatry, psychology, and epidemiology; and across levels of analysis that emphasize different outcome measures - functional capacity, physiological, cellular, and molecular. Dialogues across disciplines and levels of analysis naturally lead to new opportunities for discovery but also to stimulating challenges. Some important challenges consist of 1) establishing the best objective and predictive biological age indicators or combinations of indicators, 2) identifying the basis for inter-individual differences in the rate of biological aging, and 3) examining to what extent interventions can delay, halt or temporarily reverse aging trajectories. Discovering how psychological states influence biological aging, and vice versa, has the potential to create novel and exciting opportunities for healthcare and possibly yield insights into the fundamental mechanisms that drive human aging.

  • 6.
    Rozental, Alexander
    et al.
    Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden;UCL, Inst Child Hlth, London, England.
    Kottorp, Anders
    Malmo Univ, Fac Hlth & Soc, Malmo, Sweden.
    Forsstrom, David
    Stockholm Univ, Dept Publ Hlth Sci, Stockholm, Sweden.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden;Stockholm Univ, Dept Psychol, Stockholm, Sweden.
    Boettcher, Johanna
    Free Univ Berlin, Dept Clin Psychol & Psychotherapy, Berlin, Germany.
    Andersson, Gerhard
    Karolinska Inst, Dept Clin Neurosci, Ctr Psychiat Res, Stockholm, Sweden;Linkoping Univ, Dept Behav Sci & Learning, Linkoping, Sweden.
    Furmark, Tomas
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
    Carlbring, Per
    Stockholm Univ, Dept Psychol, Stockholm, Sweden;Univ Southern Denmark, Dept Psychol, Odense, Denmark.
    The Negative Effects Questionnaire: psychometric properties of an instrument for assessing negative effects in psychological treatments2019Inngår i: Behavioural and Cognitive Psychotherapy, ISSN 1352-4658, E-ISSN 1469-1833, Vol. 47, nr 5, s. 559-572Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Psychological treatments provide many benefits for patients with psychiatric disorders, but research also suggests that negative effects might occur from the interventions involved. The Negative Effects Questionnaire (NEQ) has previously been developed as a way of determining the occurrence and characteristics of such incidents, consisting of 32 items and six factors. However, the NEQ has yet to be examined using modern test theory, which could help to improve the understanding of how well the instrument works psychometrically.

    Aims: The current study investigated the reliability and validity of the NEQ from both a person and item perspective, establishing goodness-of-fit, item bias, and scale precision.

    Method: The NEQ was distributed to 564 patients in five clinical trials at post-treatment. Data were analysed using Rasch analysis, i.e. a modern test theory application.

    Results: (1) the NEQ exhibits fairness in testing across sociodemographics, (2) shows comparable validity for a final and condensed scale of 20 instead of 32 items, (3) uses a rating scale that advances monotonically in steps of 0 to 4, and (4) is suitable for monitoring negative effects on an item-level.

    Conclusions: The NEQ is proposed as a useful instrument for investigating negative effects in psychological treatments, and its newer shorter format could facilitate its use in clinical and research settings. However, further research is needed to explore the relationship between negative effects and treatment outcome, as well as to test it in more diverse patient populations.

  • 7.
    Åkerstedt, T.
    et al.
    Karolinska Inst, Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    Lekander, M.
    Karolinska Inst, Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    Nilsonne, G.
    Karolinska Inst, Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    d'Onofrio, P.
    Karolinska Inst, Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    Kecklund, G.
    Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    Fischer, H.
    Stockholm Univ, Psychol, Stockholm, Sweden.
    Schwarz, J.
    Stockholm Univ, Stress Res Inst, Stockholm, Sweden.
    Petrovic, P.
    Karolinska Inst, Clin Neurosci, Stockholm, Sweden.
    Månsson, Kristoffer N.T.
    Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Karolinska Inst, Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Psychol, Stockholm, Sweden.
    Gray matter volume correlates of sleepiness: a voxel-based morphometry study in younger and older adults2018Inngår i: Journal of Sleep Research, ISSN 0962-1105, E-ISSN 1365-2869, Vol. 27Artikkel i tidsskrift (Annet vitenskapelig)
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