Knut Hagvet

• Bjørk, Ida Torunn; Larsen, Karin; Ravik, Monika; Reierson, Inger Åse; Sommer, Irene & Stenholt, Britta [Show all 12 contributors for this article] (2021). Development and Testing of an Instrument for Summative Assessment of Practical Skill Performance: A Generalizability Theory Approach. Journal of Nursing Measurement. ISSN 1061-3749. 13(Sept). doi: 10.1891/JNM-D-20-00003. Full text in Research Archive Show summary

  Background and purpose: Many newly graduated nurses lack proficiency in practical skill performance. Presently, nursing students' practical skill is assessed by summative instruments with overarching items. The purpose of this study was to develop a more detailed instrument to use in summative assessment of nursing students' practical skill performance and to assess its psychometric properties. Methods: A 50-item instrument was developed. Video-recorded performances were rated by experienced clinical supervisors. A multifacet measurement design was developed. Relevant parameters were estimated by generalizability analysis. Results: Findings indicated that error of measurement were mainly caused by raters far more than by items. Conclusions: The present study suggested that summative assessment in realistic settings may not apply one rater only. Two to three/four raters appear necessary to dependably measure most skills.

• Høglend, Per Andreas & Hagtvet, Knut Arne (2019). Change mechanisms in psychotherapy: Both improved insight and improved affective awareness are necessary. Journal of Consulting and Clinical Psychology. ISSN 0022-006X. 87(4), p. 332–344. doi: 10.1037/ccp0000381. Full text in Research Archive
• Foldnes, Njål & Hagtvet, Knut Arne (2014). The Choice of Product Indicators in Latent Variable Interaction Models: Post Hoc Analyses. Psychological methods. ISSN 1082-989X. 19(3), p. 444–457. doi: 10.1037/a0035728. Full text in Research Archive Show summary

  The unconstrained product indicator (PI) approach is a simple and popular approach for modeling nonlinear effects among latent variables. This approach leaves the practitioner to choose the PIs to be included in the model, introducing arbitrariness into the modeling. In contrast to previous Monte Carlo studies, we evaluated the PI approach by three post-hoc analyses applied to a real-world case adopted from a research effort in social psychology. The measurement design applied three and four indicators for the two latent first-order variables, leaving the researcher with a choice among more than 4000 possible PI configurations. Sixty so-called matched-pair configurations that have been recommended in previous literature are of special interest. In the first post-hoc analysis we estimated the interaction effect for all PI configurations, keeping the real-world sample fixed. The estimated interaction effect was substantially affected by the choice of PIs, also across matched-pair configurations. Subsequently, a post-hoc Monte Carlo study was conducted, with varying sample sizes and data distributions. Convergence, bias, type I error and power of the interaction test were investigated for each matched-pair configuration and the all-pairs configuration. Variation in estimates across matched-pair configurations for a typical sample was substantial. The choice of specific configuration significantly affected convergence and the interaction test’s outcome. The all-pairs configuration performed overall better than the matched-pair configurations. A further advantage of the all-pairs over the matched-pairs approach is its unambiguity. The final study evaluates the all-pairs configuration for small sample sizes, and compares it to the non-PI approach of LMS.

• Storå, Bent Olav; Hagtvet, Knut Arne & Heyerdahl, Sonja (2014). Observations of families in structured interactions: Parenting therapists provide reliable ratings of mothers' parenting. Scandinavian Journal of Psychology. ISSN 0036-5564. 55(1), p. 65–71. doi: 10.1111/sjop.12086. Full text in Research Archive
• Hukkelberg, Silje Sommer; Hagtvet, Knut Arne & Kovac, Velibor Bobo (2014). Latent interaction effects in the Theory of Planned Behavior applied to quitting smoking. British Journal of Health Psychology. ISSN 1359-107X. 19(1), p. 83–100. doi: 10.1111/bjhp.12034. Full text in Research Archive Show summary

  Objectives This study applies three latent interaction models in the theory of planned behaviour (TPB; Ajzen, 1988, Attitudes, personality, and behavior. Homewood, IL: Dorsey Press; Ajzen, 1991, Organ. Behav. Hum. Decis. Process., 50, 179) to quitting smoking: (1) attitude × perceived behavioural control on intention; (2) subjective norms (SN) × attitude on intention; and (3) perceived behavioural control × intention on quitting behaviour. Methods The data derive from a longitudinal Internet survey of 939 smokers aged 15–74 over a period of 4 months. Latent interaction effects were estimated using the double-mean-centred unconstrained approach (Lin et al., 2010, Struct. Equ. Modeling, 17, 374) in LISREL. Results Attitude × SN and attitude × perceived behavioural control both showed a significant interaction effect on intention. No significant interaction effect was found for perceived behavioural control × intention on quitting. Conclusions The latent interaction approach is a useful method for investigating specific conditions between TPB components in the context of quitting behaviour. Theoretical and practical implications of the results are discussed. Statement of contribution What is already known about the subject? Although research on quitting smoking in the context of TPB is gradually growing, the exploration of latent interaction effects of TPB variables on quitting intentions and subsequent quitting behaviour is scarce. The double-mean-centred unconstrained approach is proposed as a new and user-friendly alternative to estimate interaction effects. This study investigated three latent interaction effects in TPB, as applied to quitting smoking using a double-mean-centred unconstrained approach.

• Øktedalen, Tuva; Hagtvet, Knut Arne; Hoffart, Asle; Langkaas, Tomas Formo & Smucker, Mervin (2014). The Trauma Related Shame Inventory: Measuring Trauma-Related Shame Among Patients with PTSD. Journal of Psychopathology and Behavioral Assessment. ISSN 0882-2689. 36(4), p. 600–615. doi: 10.1007/s10862-014-9422-5. Full text in Research Archive
• Dundas, Ingrid; Hagtvet, Knut Arne; Wormnes, Bjørn & Hauge, Helge (2013). Does self-hypnosis add to the effectiveness of a cognitive-behavioral intervention against test anxiety? Nordic Psychology. ISSN 1901-2276. 65(3), p. 224–241. doi: 10.1080/19012276.2013.824203. Full text in Research Archive
• Føllesdal, Hallvard & Hagtvet, Knut Arne (2013). Does emotional intelligence as ability predict transformational leadership? A multilevel approach. Leadership Quarterly. ISSN 1048-9843. 24(5), p. 747–762. doi: 10.1016/j.leaqua.2013.07.004. Full text in Research Archive
• Storå, Bent Olav; Hagtvet, Knut Arne & Heyerdahl, Sonja (2013). Reliability of observers' subjective impressions of families: A generalizability theory approach. Psychotherapy Research. ISSN 1050-3307. 23(4), p. 448–463. doi: 10.1080/10503307.2012.733830. Full text in Research Archive Show summary

  Parenting was observed in videotaped interactions in 30 families referred for child conduct problems. Generalizability coefficients and the impact of varying numbers of raters were estimated. Two measurement designs were compared: All raters observed all families ("crossed" design) and a different rater observed each family ("nested" design). The crossed design provided higher generalizability coefficients than a nested design, implying inflated generalizability estimates if a crossed estimation model is used for a nested data collection. Three and four raters were needed to obtain generalizability coefficients in the .70–.80 range for monitoring and discipline, respectively. One rater was sufficient for a corresponding estimate for positive involvement and for an estimate in .80–.90 range for problem-solving. Estimates for skill encouragement were non-acceptable.

• Lorentzen, Steinar; Bakali, Jan-Vegard; Hersoug, Anne Grete; Hagtvet, Knut Arne; Ruud, Torleif & Høglend, Per Andreas (2012). Psychodynamic group psychotherapy: Impact of group lenght and therapist professional characteristics on development of therapeutic alliance. Clinical Psychology and Psychotherapy. ISSN 1063-3995. 19(5), p. 420–433. doi: 10.1002/cpp.758. Full text in Research Archive
• Soest, Tilmann Von & Hagtvet, Knut Arne (2011). Mediation Analysis in a Latent Growth Curve Modeling Framework. Structural Equation Modeling. ISSN 1070-5511. 18(2), p. 289–314. doi: 10.1080/10705511.2011.557344. Full text in Research Archive
• Øktedalen, Tuva & Hagtvet, Knut Arne (2011). A Revised Version of the Norwegian Adaptation of the Test Anxiety Inventory in a Heterogeneous Population. Scandinavian Journal of Educational Research. ISSN 0031-3831. 55(5), p. 475–487. doi: 10.1080/00313831.2010.537688. Full text in Research Archive
• Pedersen, Geir G.; Hagtvet, Knut Arne & Karterud, Sigmund (2011). Interpersonal Problems: Self-Therapist Agreement and Therapist Consensus. Journal of Clinical Psychology. ISSN 0021-9762. 67(3), p. 308–317. doi: 10.1002/jclp.20762. Full text in Research Archive
• Gjestad, Rolf; Franck, Johan; Hagtvet, Knut Arne & Haver, Brit (2011). Level and change in alcohol consumption, depression, and dysfunctional attitudes among female treated for alcohol addiction. Alcohol and Alcoholism. ISSN 0735-0414. 46(3), p. 292–300. doi: 10.1093/alcalc/agr018. Full text in Research Archive
• Bakali, Jan-Vegard; Wilberg, Theresa; Hagtvet, Knut Arne & Lorentzen, Steinar (2010). Sources accounting for alliance and cohesion at three stages in group psychotherapy: Variance component analyses. Group Dynamics. ISSN 1089-2699. 14(4), p. 368–383. doi: 10.1037/a0019170. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Strukturelle likningsmodeller: Målingsmodell og regresjonsmodell. In Martinussen, Monica (Eds.), Kvantitativ forskningsmetodologi i samfunns- og helsefag. Fagbokforlaget. ISSN 9788245008883. p. 285–314. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Generalizability teori. In Martinussen, Monica (Eds.), Kvantitativ forskningsmetodologi i samfunns- og helsefag. Fagbokforlaget. ISSN 9788245008883. p. 89–119. Full text in Research Archive
• Hagtvet, Knut Arne; Ye, Renmin; Man, Frantisek; Pal, Suchitra & Sharma, Sagar (2010). Inquiry into a domain of worry cognitions in test anxiety research. Cognitie, Creier, Comportament. ISSN 1224-8398. p. 365–399. Full text in Research Archive
• Garthus-Niegel, Susan; Hagtvet, Knut Arne & Vollrath, Margarete E. (2010). A prospective study of weight development and behavior problems in toddlers: the Norwegian Mother and Child Cohort Study. BMC Public Health. 10. doi: 10.1186/1471-2458-10-626. Full text in Research Archive Show summary

  Background Previous research has suggested that overweight children have a higher risk of behavior problems, but the causal direction of this relationship remains unclear. In a large prospective population study, we investigated whether child behavior problems and body mass index are associated in toddlers and whether overweight is a risk for behavior problems or vice versa. Methods The study was part of the Norwegian Mother and Child Cohort Study. The sample consisted of 10 860 toddlers, followed up to age 36 months. We used data from maternal questionnaires from gestation week 17 and at child ages 18 and 36 months, and data from the Medical Birth Registry of Norway. Child height and weight were assessed at child health stations and recorded by mothers. Behavior problems were assessed using shortened subscales from the Child Behavior Checklist. Statistical analyses were conducted using structural equation modeling. Results Behavior problems in toddlers were not associated with higher body mass index cross-sectionally at either age 18 or 36 months, and there was no indication that behavior problems caused increasing body mass index over time or vice versa. Conclusions The association between behavior problems and body mass index found in older children did not appear in toddlers up to age 36 months. Future studies should focus on the age span from 3 to 6 years, which includes the period of adiposity rebound.

• Alhija, Fadia Nasser-Abu & Hagtvet, Knut Arne (2009). Assessing generalizability and interpretability in multilevel data structures with unbalanced multifacet measurement. In Teo, Timothy & Khine, Myint Swe (Ed.), Structural Equation Modeling in Educational Research. Concepts and Applications. Brill | Sense. ISSN 9789087907877. p. 79–101. Full text in Research Archive
• Stochl, Jan; Hagtvet, Knut Arne; Brozova, H.; Roth, J; Ruzicka, E. & Ruzicka, E (2009). Handedness does not predict side of onset of motor symptoms in Parkinson's disease. Movement Disorders. ISSN 0885-3185. 24(12), p. 1836–1839. doi: 10.1002/mds.22653. Full text in Research Archive
• Langballe, Ellen Melbye; Langballe, Ellen Melbye; Innstrand, Siw Tone; Hagtvet, Knut Arne; Falkum, Erik & Aasland, Olaf Gjerløw (2009). The relationship between burnout and musculoskeletal pain in seven Norwegian occupational groups. WORK: A Journal of Prevention, Assessment & Rehabilitation. ISSN 1051-9815. 32(2), p. 179–188. doi: 10.3233/WOR-2009-0804. Full text in Research Archive Show summary

  Occupational and gender differences were investigated in the relationship between burnout and musculoskeletal pain in the head, neck, shoulders, and back. Representative samples of lawyers, physicians, nurses, teachers, church ministers, bus drivers, and information technology workers in Norway (N = 4507) were analyzed using structural equation modeling. The exhaustion dimension of burnout was positively associated with musculoskeletal pain in all groups, and the strength of the relationship ranged from moderate to strong. The disengagement dimension of burnout was negatively associated with musculoskeletal pain in five groups and only ranged from −0.15 to −0.42. Professional efficacy was slightly weaker, and inconsistently (i.e., both positively and negatively) associated with musculoskeletal pain in four of the groups. There were larger differences in the strength of the relationships between the seven occupational groups than between males and females within the same profession. Results suggest that burnout and musculoskeletal pain are related, but the strength of the associations varies according to gender and occupation. Overall, occupational factors appear to be stronger predictors of the co-occurrence of burnout and musculoskeletal pain than gender.

• Pecha, Ondrej; Hagtvet, Knut Arne; Stochl, Jan & Cechovska, I. (2009). Generalizability of assessing fundamental aquatic skills: A three-facet design. Kinanthropologica Journal. ISSN 1212-1428. 45(2), p. 119–131. Full text in Research Archive
• Føllesdal, Hallvard & Hagtvet, Knut Arne (2009). Emotional Intelligence: The MSCEIT from the perspective of generalizability theory. Intelligence. ISSN 0160-2896. 37(1), p. 94–105. doi: 10.1016/j.intell.2008.08.005. Full text in Research Archive
• Niegel, Susan; Ystrøm, Eivind; Hagtvet, Knut Arne & Vollrath, Margarete E. (2008). Difficult temperament, breastfeeding and their mutual prospective effects: The Norwegian Mother and Child Cohort Study. Journal of Developmental and Behavioral Pediatrics. ISSN 0196-206X. 29(6), p. 458–462. doi: 10.1097/DBP.0b013e3181877a88. Full text in Research Archive
• Pecha, Ondrej; Hagtvet, Knut Arne & Kovar, Karel (2008). The Influence of Occasions and Clustered Raters on Reliability of Ratings of Item Relevance: Generalizability Theory Approach. Submitted. Measurement in Physical Education and Exercise Science. ISSN 1091-367X. Full text in Research Archive
• Proost, Karin; Derous, Eva; Schreurs, Bert; Hagtvet, Knut Arne & Witte, Karel de (2008). Selection test anxiety: Investigating applicants' self- vs other-referenced anxiety in a real selection setting. International Journal of Selection and Assessment. ISSN 0965-075X. 16(1), p. 14–26. Full text in Research Archive
• Idsøe, Thormod; Hagtvet, Knut Arne; Bru, Edvin; Midthassel, Unni Vere & Knardahl, Stein (2008). Antecedents and outcomes of intervention program participation and task priority change among school psychology counselors: A latent variable growth framework. Journal of School Psychology. ISSN 0022-4405. 46(1), p. 23–52. doi: 10.1016/j.jsp.2007.01.001. Full text in Research Archive Show summary

  A three-year national intervention program introduced into the School Psychology Service (SPS) in Norway with the aim of increasing systemic level work among SP counselors was investigated. Latent variable growth models based on longitudinal data from 195 SP counselors gave no significant mean level change in systemic level work. This concurred with GLM analyses based on data from a sample of 20 schools. However, retrospective self-reported significant positive mean level change for systemic level work was detected among the SP counselors. Intervention program participation was associated with individual change in systemic level work. Self-efficacy beliefs about systemic level work, and school-related etiology beliefs predicted individual change to a certain degree. Comparison of two rival models gave no support for a hypothesized interaction among intervention program participation and beliefs in their effects on systemic level work. Open-ended questions indicated that individual level workload and the perceived expectations from the schools may have concern for a successful effect of the intervention program in addition to the hypothesized ones. Individual change in systemic level work was positively associated with individual change in job satisfaction.

• Ødegård, Atle; Hagtvet, Knut Arne & Bjørkly, Stål (2008). Applying aspects of generalizability theory in preliminary validation of the multifacet interprofessional collaboration model (PINCOM). International Journal of Integrated Care (IJIC). 8(Oct-Dec), p. 1–11. Full text in Research Archive Show summary

  Objective: Empirical assessment of the Interprofessional Collaboration (IPC) model within the framework of Generalizability Theory (GT). Design and participants: A multifacet data collection design served the purpose of examining the relationships between observed indicators representing a defined construct. Professionals working with children and adolescents (n=134), in the context of mental health care, completed a 48 item questionnaire addressing 12 aspects of interprofessional collaboration. Results: Estimated variance components from two G-studies are presented. The relative impact of different sources of variance was estimated 1) for the full design, and 2) for three groups of informants (schools, primary care and specialist services). Differences between groups were found regarding the relative impact of the level ¿ and context facets with respect to perception of IPC. Conclusions: The methodology of generalizability theory is well suited for data with a complex facet structure as displayed in the present study. We recommend researchers to give domain specifications thorough attention when measuring IPC.

• Hagtvet, Knut Arne & Høglend, Per Andreas (2008). Assessing precision of change scores in psychodynamic psychotherapy: A generalizability theory approach. Measurement and Evaluation in Counseling and Development. ISSN 0748-1756. 41, p. 162–178. Full text in Research Archive
• Pedersen, Geir; Hagtvet, Knut Arne & Karterud, Sigmund (2007). Generalizability studies of the Global Assessment of Functioning - Split version. Comprehensive Psychiatry. ISSN 0010-440X. 48, p. 88–94. doi: 10.1016/j.comppsych.2006.03.008. Full text in Research Archive
• Hagtvet, Knut Arne & Hanin, Juri, L. (2007). Consistency of Performance-Related Emotions in Elite Athletes: Generalizability theory applied to the IZOF model. Psychology of Sport And Exercise. ISSN 1469-0292. 8(1), p. 47–72. doi: 10.1016/j.psychsport.2005.12.002. Full text in Research Archive
• Monsen, Jon Trygve; Hagtvet, Knut Arne; Havik, Odd E. & Eilertsen, Dag-Erik (2006). Circumplex Structure and Personality Disorders Correlates of the Interpersonal Problems Model (IIP-C): Construct validity and clinical implications. Psychological Assessment. ISSN 1040-3590. 18(2), p. 165–173. doi: 10.1037/1040-3590.18.2.165. Full text in Research Archive Show summary

  This study assessed the construct validity of the circumplex model of the Inventory of Interpersonal Problems (IIP-C) in Norwegian clinical and non-clinical samples. Structure was examined by evaluating the fit of the circumplex model to data obtained by the IIP-C. Observer-rated personality disorder criteria (DSM-IV, axis II) were used as external correlates. The reliability of the IIP-C scales were acceptable and in the same range as in the original version. A multi-sample analysis strategy did not support an invariant circumplex model across the two groups. However, the estimated structures reflected mostly the same circular pattern of a quasi-circumplex model in the two groups. Departures from the ideal model were of negligible practical significance. The validity results examining personality disorder correlates of the IIP-C generally conformed to predictions, providing direct evidence for agreement between self-report and expert judgments of interpersonal problems.

• Halvorsen, Margrethe Seeger; Hagtvet, Knut Arne & Monsen, Jon Trygve (2006). The reliability of self-image change scores in psychotherapy research: An application of generalizability theory. Psychotherapy. ISSN 0033-3204. 43, p. 308–321. Full text in Research Archive
• Falkum, Erik; Langballe, Ellen Melbye; Hagtvet, Knut Arne; Innstrand, Siw Tone & Aasland, Olaf Gjerløw (2006). The factorial validity of the Oldenburg Burnout inventory across occupations. Submitted. European Journal of Psychological Assessment. ISSN 1015-5759. Full text in Research Archive
• Hagtvet, Bente Eriksen; Hagtvet, Knut Arne & Lyster, Solveig-Alma Halaas (2006). Longitudinal Connection Between Oral and Written Language Skills in Children at Risk for Dylexia. Submitted. Developmental Psychology. ISSN 0012-1649. Full text in Research Archive
• Nasser, Fadia M. & Hagtvet, Knut Arne (2006). Multilevel analysis of the effects of student and instructor/course characteristics on student ratings. Research in Higher Education. ISSN 0361-0365. 47(5), p. 559–590. Full text in Research Archive
• Stuchlikova, Iva; Hagtvet, Knut Arne & Man, Frantisek (2005). Dotaznik k mereni afektivnich stavu: Konfirmacni faktorova a analyza kratke ceske verze [A confirmatory factor analysis of the short Czech version of the Profile of Mood States]. Ceskoslovenská Psychologie. ISSN 0009-062X. 5, p. 459–469. Full text in Research Archive
• Hagtvet, Knut Arne & Solhaug, Trond (2005). A two-facet measurement methodology for assessing item parcels. An application to measuring political knowledge in secondary school. Scandinavian Journal of Educational Research. ISSN 0031-3831. p. 399–417. Full text in Research Archive
• Hagtvet, Knut Arne & Sipos, Kornel (2004). Measuring anxiety by ordered categorical items in data with subgroup structure: The case of the Hungarian version of the Trait Anxiety scale of the State-trait Anxiety Inventory for Children (STAIC-H). Anxiety, Stress, & Coping. ISSN 1061-5806. 17, p. 49–67. Full text in Research Archive
• Hagtvet, Knut Arne & Nasser, Fadia M. (2004). How well do item parcels represent conceptually defined latent constructs? A two-facet approch. Structural Equation Modeling. ISSN 1070-5511. 11(2), p. 168–193. Full text in Research Archive
• Kim, Sooyeon & Hagtvet, Knut Arne (2003). The impact of misspecified item parceling on representing latent variables in covariance structure modeling: A simulation study. Structural Equation Modeling. ISSN 1070-5511. 10(1), p. 101–127. Full text in Research Archive
• Hagtvet, Knut Arne; Man, Frantisek & Sharma, Sagar (2001). Generalizability of self-related cognitions in test anxiety. Personality and Individual Differences. ISSN 0191-8869. 31, p. 1147–1171. Full text in Research Archive Show summary

  A 60-item multifacet inventory was designed to examine the generalizability of self-related cognitions in test anxiety. The inventory, founded on a three-facet measurement domain definition of failure outcome expectancies, consisted of items nested within combinations of two facets; self-related cognitions and evaluative concerns. The inventory was administered to a sample of 706 9th graders (405 boys and 309 girls) 13-14 years of age from an urban population of the Southern part of the Czech Republic. Univariate and multivariate generalizability analyses supported a general component that was substantially more dominated by other-referenced compared to self-referenced failure outcome expectancies. The present findings supported the notion of test anxious students as viewing themselves in a broader social evaluative academic context including both self- and other-referenced self-related cognitions. The emphasis on self-referencing in current measures of test anxiety may be viewed as representing a part of a more comprehensive evaluative concern. To measure the focal parameter of interest, the general component, a follow-up analysis suggested a 16-item inventory organized in terms of two facets; self-related cognitions combined with evaluative concerns. The present findings encourage further studies to include other conceptually relevant facets to pursue the study of generalizability of test anxiety. Key-Words: test anxiety, measurement, generalizability, self-related cognitions, self-referenced cognitions, other-referenced cognitions, domain definition

• Hagtvet, Knut Arne & Zuo, L. (2000). Conceptual and Empirical Components of an Internal Domain Study: An illustration in terms of the Achievement Motives Scale. Scandinavian Journal of Educational Research. ISSN 0031-3831. 44(1), p. 49–78. Full text in Research Archive Show summary

  The present paper suggests the study of an internal domain of construct measures to include a definition of the associated domain of measurement and conceptual analysis of indicators assumed to represent the domain as a required independent supplement to adequate empirical analysis. Illustration of this type of study was made possible by means of a theoretically based measure of motive dispositions, the Achievement Motives Scale (AMS). The empirical analysis were carried out on two language versions of the AMS on sample data from 247 female and 257 male Chinese high school students and 252 American graduate students, respectively. Findings from all samples converged to a large extent. Based on both the conceptual and empirical analyses some suggestions were offered to improve the measures' approximation to the motive constructs. The framework of the domain sampling model of generalizability theory provided a methodological tool for dicussing ways of improving the construct measure.

• Engelsen, Birthe, K. & Hagtvet, Knut Arne (1999). The dimensionality of the 12-item version of the Eating Attitudes Test. Confirmatory factor analyses. Scandinavian Journal of Psychology. ISSN 0036-5564. 40(4), p. 293–300. Full text in Research Archive
• Engelsen, Birthe, K. & Hagtvet, Knut Arne (1999). A generalizability study of the Eating Attitudes Test (EAT) in non-clinical adolescents. Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity. ISSN 1124-4909. 4(4), p. 179–186. Full text in Research Archive

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• Kozelka, Pavel; Hagtvet, Knut Arne; Stuchlikova, Iva & Man, Frantisek (2013). Diagnostika motivace u deti a dospivajicich: predbezna validizacw ceske verze “On-line Motivation Questionnaire”. [Assessment of motivation in children and adolescents: Preliminary validation of the Czech version of “On-line motivation Questionnaire”]. In Jost, J., Man, F., & Nohavova, A. (Eds.) Podpora zdravého psychického vývoje z aspektu dítěte a učitele [Facilitation of health development from the viewpoint of child and adolescent] (pp 85 - 108). Praha:Eduko. EDUKO. ISBN 9788087204665. 167 p. Full text in Research Archive

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• Hagtvet, Knut Arne; Stuchlikova, Iva & Man, Frantisek (2014). Confirmatory factor analysis With multifacet error structure. Full text in Research Archive
• Hagtvet, Knut Arne (2014). Distinguished Spielberger address: Does our measurement model match our constructs? A revisit to different types of indicator of latent variables. Full text in Research Archive
• Foldnes, Njål & Hagtvet, Knut Arne (2014). The Choice of Product indicators in latent variable interaction models. Full text in Research Archive
• Hagtvet, Knut Arne (2014). Måling av latente variabler: Idè og anvendelser basert på generalizability teori. Full text in Research Archive
• Øktedalen, Tuva; Hoffart, Asle; Hagtvet, Knut Arne & Langkaas, Tomas Formo (2014). Process of change in shame, guilt and anger with symptoms of PTSD in a RCT. Full text in Research Archive
• Storå, Bent Olav; Hagtvet, Knut Arne & Heyerdahl, Sonja (2014). Assessing reliability of family interactions: The Choice of relevant estimation models. Full text in Research Archive
• Hagtvet, Knut Arne (2014). Generalizability Theory. In Michalos, Alex C. (Eds.), Encyclopedia of Quality of Life and Well-Being Research. Springer. ISSN 9789400707528. p. 2497–2499. Full text in Research Archive
• Øktedalen, Tuva; Hagtvet, Knut Arne; Hoffart, Asle & Langkaas, Tomas Formo (2012). Using multivariate generalizability for assessing psychometric properties of Trauma Related Fear Inventory (TRFI). Full text in Research Archive
• Hagtvet, Knut Arne (2012). Monte Carlo simulation based on real datasets: Post Hoc Power Analysis. Full text in Research Archive
• Hagtvet, Knut Arne; Mossige, Svein & Soest, Tillman von (2012). The choice between formative and reflective indicators? The latent variables anxiety, depression and sexual harassment. Full text in Research Archive
• Hagtvet, Knut Arne & Sipos, Kornel (2011). Creating short forms for construct measures: Methodological challenges. Full text in Research Archive
• Hagtvet, Knut Arne; Mossige, Svein; Børretzen, Suzanne & Soest, Tilmann von (2011). Formative and reflective measurement models: Illustrations and methodological challenges. Full text in Research Archive
• Øktedalen, Tuva & Hagtvet, Knut Arne (2011). Factor analysis in a heterogeneous population: The case of a revised version of the Norwegian Test Anxiety Inventory. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Creating short forms for construct measures: Methodological considerations reconsidered. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Five days workshop on Measurement and Generalizability Theory. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Workshop on Structural Equation Modeling med Lisrel. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Målingsteori i psykiatrisk forsking. Full text in Research Archive
• Dundas, Ingrid; Hagtvet, Knut Arne; Wormnes, Bjørn & Hauge, Helge (2010). Testing interventions against test anxiety. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Creating short forms for construct measures: Methodological considerations reconsidered. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Workshop on Generalizability theory. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Måling av latente variabler i sosialpsykologisk forskning. Full text in Research Archive
• Hagtvet, Knut Arne (2010). Innføring i Structural Equation Modeling. Full text in Research Archive
• Hagtvet, Knut Arne; Sharma, Sagar; Man, Frantisek; Ye, Renmin; Hageler, Kari & Sanches, Kathryn [Show all 7 contributors for this article] (2009). Still a need to explore the measurement domain of test anxiety. Symposium. Full text in Research Archive
• Hagtvet, Knut Arne; Proost, Karin; Derous, Eva; Schreurs, Bert & Witte, Karel de (2009). The differential relationships of self-referenced and other-referenced anxiety to cognitive test performance. Full text in Research Archive
• Hagtvet, Knut Arne; Mossige, Svein; Soest, Tillman von & Børretzen, Suzanne (2009). Formative and reflective measurement models: Challenges and illustrations. Full text in Research Archive
• Hagtvet, Knut Arne (2007). Creating short forms for construct measures: Methodological considerations. Invited lecture at Division of Research Methodology, Department of Kinanthropology, Faculty of Physical Education and Sport, Charles University, Prague. December. Full text in Research Archive
• Hagtvet, Knut Arne; Ye, Renmin & Pal, Shuchitra (2007). A joint application of generalizability theory and structural equation modeling serving construct definition. Invited lecture at Division of Research Methodology, Department of Kinanthropology, Faculty of Physical Education and Sport, Charles University, Prague. June. Full text in Research Archive
• Hagtvet, Knut Arne & Ye, Renmin (2007). A Joint Application of Generalizability Theory and Structural Equation Modeling Serving Construct Definition. Full text in Research Archive
• Hagtvet, Knut Arne; Ye, Renmin & Sanchez, K. (2006). Assessing group comparability by a multifacet construct representing design. Accepted for presentation at the Annual Meeting for the American Educational Research Association, Division D: Measurement and Research Methodology;Section 1: Measurement, Psychometrics and Assessment. Full text in Research Archive
• Hagtvet, Knut Arne; Ye, Renmin & Pal, Shuchitra (2006). Assessing group comparability of construct representation in cross cultural research applying a multilevel generalizability analysis. Full text in Research Archive
• Hagtvet, Knut Arne; Ye, Renmin & Sanchez, K. (2005). Can unidimensional one-facet measures be too restrictive for construct representation? Full text in Research Archive
• Hagtvet, Knut Arne; Stuchlikova, Iva & Man, Frantisek (2005). Measuring positive and negative emotions. The application of the two-facet model in testing the PANAS hierarchical structure. Full text in Research Archive
• Hagtvet, Knut Arne (2005). Construct inferences in construct - based research. Presentation given at the Invited Roundtable Discussion at the 26th International Conference of the Stress and Anxiety Research Society. Full text in Research Archive
• Hagtvet, Knut Arne (2004). Psychometrics in Psychiatry. Full text in Research Archive
• Hagtvet, Knut Arne (2004). Assessment of psychological constructs in the framework of generalizability theory: Different applications. Full text in Research Archive
• Hagtvet, Knut Arne & Hanin, Juri, L. (2004). Idiosyncratic emotion profiling in elite athletes: An application of the generalizability theory perspective. Full text in Research Archive
• Hagtvet, Knut Arne (2004). The role of domain definition in measuring psychological constructs: Worry Cognitions and evaluative situational context in test anxiety. Full text in Research Archive
• Hagtvet, Knut Arne & Man, Frantisek (2004). Using generalizability theory to estimate item order effects in multifacet measurement designs. Full text in Research Archive
• Hagtvet, Knut Arne (2004). Assessment of psychological constructs in the framework of generalizability theory: Different applications. Full text in Research Archive
• Hagtvet, Knut Arne & Hageler, Kari (2004). The role of domain definition in measuring psychological constructs: Worry cognitions and evaluative situational context in test anxiety. Full text in Research Archive
• Hagtvet, Knut Arne (2004). An introduction to growth curve modeling (Vekstkurveanalyser - en introduksjon). Full text in Research Archive
• Hagtvet, Knut Arne (2003). Researching psychological constructs by means of multifacet designs and generalizability theory. Full text in Research Archive
• Hagtvet, Knut Arne (2003). Psychological measurement with reference to "validity and reliability of assessment methods". Full text in Research Archive
• Hagtvet, Bente Eriksen; Hagtvet, Knut Arne; Horn, Erna & Lyster, Solveig-Alma Halaas (2003). Connections between spoken and written language: Early precursors of written language problems. Full text in Research Archive
• Hagtvet, Knut Arne & Frantisek, Man (2003). Failure outcome expectancies measured in an evaluative sport context. Full text in Research Archive
• Hagtvet, Knut Arne (2002). Konseptuelle og metodologiske utfordringer ved måling og analyse av psykologiske variabler. Full text in Research Archive
• Hagtvet, Knut Arne (2002). Psychometrics in Psychiatry. Full text in Research Archive
• Hagtvet, Knut Arne (2001). Item parceling in SEM: Applications to measuring test anxiety. Full text in Research Archive
• Grova, Bjørg; Hagtvet, Knut Arne & Torgersen, Anne Mari (2001). Developmental trends in sleep behavior: A twin study across 30 years. Full text in Research Archive Show summary

  Abstracts published only on Internet: www.psyk.uu.se/ecdp. Key words: sleep rythm, longitudinal design, twin study

• Hagtvet, Knut Arne (2000). Differences in test anxiety between students in Norway, Czech Republic and Northern India. Full text in Research Archive
• Hagtvet, Knut Arne & Kim, Sooyeon (2000). Assessing the effects of item parceling in Structural Equation Modeling: A simulation study. Full text in Research Archive
• Hagtvet, Knut Arne (1999). A covariance modeling approach to investigate dimensionality within a generalizability framework. Full text in Research Archive
• Storå, Bent Olav; Heyerdahl, Sonja & Hagtvet, Knut Arne (2013). Global observations of mother's parenting practices in structured family interactions. Generalizability and validity of therapists and coder ratings. Universitetet i Oslo. Full text in Research Archive

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