Svein Magnussen

• Brennen, Tim & Magnussen, Svein (2026). Hukommelse i et rettspsykologisk perspektiv – en oppsummering av kunnskap og anbefalinger anno 2025. Tidsskrift for strafferett. ISSN 1502-685X. 26(1), s. 3–21. doi: 10.18261/strafferett.26.1.1. Fulltekst i vitenarkiv Vis sammendrag

  Vitneforklaringer er viktige i mange straffesaker, men hva kan vi forvente at vitner husker? Artikkelen gir en innføring i hukommelse for trivielle og dramatiske erfaringer i et korttids- og langtidsperspektiv, og faktorer som kan bevirke feil hukommelse og falsk hukommelse. Minner om hverdagslige hendelser og personer møtt én gang er skjøre og forsvinner raskt, mens dramatiske/traumatiske erfaringer huskes godt, og det er ingen evidens for fortrengning av slike minner. Minner endrer seg gradvis, vi er suggestible, og det hender at vi «husker» episoder som ikke har skjedd. I et rettssikkerhetsperspektiv er det viktig at manglende eller feil hukommelse ikke blir tolket som løgn, og at usannsynlig presise hukommelsesprestasjoner blir møtt med skepsis.

• Brennen, Tim; Blandhol, Sverre & Magnussen, Svein (2026). Witnesses and their testimony: A model of credibility, reliability, and the factual truth. Psychology, public policy and law. ISSN 1076-8971. doi: 10.1037/law0000498. Fulltekst i vitenarkiv Vis sammendrag

  Legal systems use divergent and contradictory definitions of credibility, illustrated by recent examples from the apex courts of the United States, Canada, and Norway. Combining concepts from legal analysis and legal psychology presents a way forward. First, it is noted that psychology has largely studied intuitive initial judgments of credibility, whereas legal evaluations of credibility are generally deliberative and considered. Combining both approaches with the theoretical distinction in legal psychology between the credibility of a person and the reliability of their testimony, a preliminary model is proposed that describes the ways in which a reliability assessment can diverge from a credibility assessment. Because reliability also consists of an assessment, it is therefore subject to the weaknesses of human reasoning and can be mistaken, or, in the model’s terms, not in accordance with the factual truth. The model links thinking about credibility and reliability with the relevant literature from legal psychology. (PsycInfo Database Record (c) 2026 APA, all rights reserved)

• Magnussen, Svein & Stridbeck, Ulf (2025). Vurdering av troverdighet som rettslig bevis: En vitnepsykologisk kommentar til Høyesteretts dom 2025-458-A. Tidsskrift for strafferett. ISSN 1502-685X. 25(3), s. 289–297. doi: 10.18261/strafferett.25.3.3. Fulltekst i vitenarkiv Vis sammendrag

  Sammendrag Vitnepsykologisk forskning har dokumentert at vurderinger av troverdighet er på sjansenivå. Det innebærer at isolerte vurderinger av hvordan tiltalte, fornærmede eller vitner fremstår og forklarer seg i retten, i fravær av uavhengige bevis, er et tynt grunnlag for en fellende dom. Noe i utakt med denne forskningen uttalte Høyesterett i 2011 at i enkelte saker hvor det ikke foreligger andre bevis, må retten som utgangspunkt kunne bygge en fellende dom på en vurdering av tiltaltes, fornærmedes eller vitners troverdighet. Høyesterett har nå med HR-2025-458-A, mer enn 20 år etter at resultatene av denne forskningen var velkjent, tatt høyde for at troverdighetsvurderinger alene ikke bør føre til en fellende dom, slik 2011-uttalelsen kan leses som. Dette er en viktig presisering i et rettssikkerhetsperspektiv. Dommen tar imidlertid ikke opp et annet problematisk aspekt ved slike saker, nemlig at i tvetydige situasjoner kan tiltaltes, fornærmedes eller vitners fortellinger på den ene siden fremstå som sanne, men på den andre siden være objektivt feil. Retten må være seg bevisst hukommelsens iboende feilbarlighet.

• Brennen, Tim & Magnussen, Svein (2024). Er vitnepsykologien kulturfri? Lov og Rett. ISSN 0024-6980. 63, s. 519–532. doi: 10.18261/lor.63.8.3. Fulltekst i vitenarkiv
• Brennen, Tim & Magnussen, Svein (2024). The perils of methods that detect lies 70% of the time: A reply to Ben-Shakhar and Verschuere (2024). Legal and Criminological Psychology. ISSN 1355-3259. 29, s. 128–131. doi: 10.1111/lcrp.12266. Fulltekst i vitenarkiv Vis sammendrag

  Ben-Shakhar and Verschuere (2024) commented on Brennen and Magnussen's (2023) review of the literature on lie detection. They argued that the review's conclusion that such methods are not ready for forensic use is too pessimistic and that they already are in use worldwide. While we agree that many jurisdictions do in fact use such methods, we see this as cause for alarm rather than confirmation of their utility. It is documented that several lie detection methods distinguish to a statistically significant degree between deceitful and truthful statements, but they also have substantial error rates. This means that applying them at the level of the individual statement will frequently be misleading, making them unsuited to guiding police investigations.

• Magnussen, Svein & Teigen, Karl Halvor (2023). Hvorfor tror retten på kriminelle informanter? Lov og Rett. ISSN 0024-6980. 62(1), s. 37–48. doi: 10.18261/lor.62.1.4. Fulltekst i vitenarkiv
• Brennen, Tim & Magnussen, Svein (2023). Lie Detection: What Works? Current Directions in Psychological Science. ISSN 0963-7214. 32, s. 395–401. doi: 10.1177/09637214231173095. Fulltekst i vitenarkiv Vis sammendrag

  A reliable lie-detection method would be extremely useful in many situations but especially in forensic contexts. This review describes and evaluates the range of methods that have been studied. Humans are barely able to pick up lies on the basis of nonverbal cues; they do so more successfully with systematic methodologies that analyze verbal cues and with physiological and neuroscientific methods. However, the rates at which people are able to detect lies are still well below the legal standard of “beyond a reasonable doubt.” This means that the utmost caution must be exercised when such methods are employed. In investigations where independent evidence exists, there is emerging evidence that interviews based on a free account followed by the gradual introduction of the evidence by investigators can reveal inconsistencies in a guilty interviewee’s account. Automated machine-learning methods also hold some promise.

• Johnson, Miriam S.; Hyvik, Martine Stordrange; Johansen, Ida Caroline Bråthen; Magnussen, Svein; Grung, Rolf Magnus & Røed, Ragnhild Klingenberg [Vis alle 8 forfattere av denne artikkelen] (2023). The Use and Productivity of Visual Aids as Retrieval Support in Police Interviews of Preschool-Aged Victims of Abuse. Journal of Police and Criminal Psychology. ISSN 0882-0783. doi: 10.1007/s11896-023-09627-w. Fulltekst i vitenarkiv Vis sammendrag

  Professional use of external retrieval cues, such as various types of visual aids, has been utilized in investigative interviews of children for decades based on the assumption that aids can facilitate children’s recollection of abusive incidents. Although analog studies and surveys have provided insight into various aspects of visual aid utilization, there is a scarcity of field studies that addresses the use of visual aids in large samples of authentic investigative interviews of preschool-aged children. In the present study, the use and productivity of visual aids were examined in 140 investigative interviews of 3- to 6-year-old children, all of whom disclosed abuse in cases that progressed to prosecution. The exploratory analyses focused on the overall use of visual aids, the types of questions posed along with visual aids when the interviewer directly asks questions regarding the investigated incident(s), and the extent to which the children provided forensically relevant information in response to questions used along with visual aids. It was found that visual aids were utilized to elicit information regarding the investigated incident(s) in 92% (n = 129) of the interviews, with emotion cards and drawing materials being the most common aids used. The highest proportion of questions asked alongside visual aids were directive (41.6%) and option-posing (37.3%) questions, followed by suggestive questions (17.9%), and a rather low proportion of open-ended invitations (3.2%). In addition to visual aids, open-ended invitations elicited the most forensically relevant information from the interviewees. The need for standardized guidelines and specialized training for the use of visual aids in investigative interviews of young children is discussed.

• Johnson, Miriam S.; Magnussen, Svein; Asmyhr, Anders Foyn; Helgeland, Johanna Jensen; Jonassen, Marie Pilegaard & Lundal, Emil [Vis alle 14 forfattere av denne artikkelen] (2023). Doctored photographs create false memories of spectacular childhood events. A replication of Wade et al. (2002) with a Scandinavian twist. Memory. ISSN 0965-8211. 31(7), s. 1011–1018. doi: 10.1080/09658211.2023.2200595. Fulltekst i vitenarkiv
• Brennen, Tim & Magnussen, Svein (2022). Memory. I Tierney, Robert J.; Rizvi, Fazal & Erkican, Kadriye (Red.), International Encyclopedia of Education (4th Edition). Elsevier. ISSN 9780128186299. s. 219–228. doi: 10.1016/B978-0-12-818630-5.14017-5. Fulltekst i vitenarkiv
• Brennen, Tim & Magnussen, Svein (2022). The Science of Lie Detection by Verbal Cues: What Are the Prospects for Its Practical Applicability? Frontiers in Psychology. 13. doi: 10.3389/fpsyg.2022.835285. Fulltekst i vitenarkiv
• Bjørndal, Ludvig Daae; Brennen, Tim & Magnussen, Svein (2021). Norske dommeres kunnskap om påliteligheten av øyevitneforklaringer – 12 år senere. Lov og Rett. ISSN 0024-6980. 60, s. 521–532. doi: 10.18261/issn.1504-3061-2021-09-03. Fulltekst i vitenarkiv
• Baugerud, Gunn Astrid; Johnson, Miriam Sinkerud; Hansen, Helle Birgitte; Magnussen, Svein J & Lamb, Michael E. (2021). Portraits in straw: A reply to Melinder et al. (2020). Applied Cognitive Psychology. ISSN 0888-4080. 35(2), s. 570–573. doi: 10.1002/acp.3791. Fulltekst i vitenarkiv
• Sumampouw, Nathanael; Bjørndal, Ludvig Daae; Magnussen, Svein; Otgaar, Henry & Brennen, Tim (2021). Knowledge about eyewitness testimony: a survey of Indonesian police officers and psychologists. Psychology, Crime and Law. ISSN 1068-316X. 28, s. 763–777. doi: 10.1080/1068316X.2021.1962868. Fulltekst i vitenarkiv Vis sammendrag

  Faulty eyewitness testimony can be a notorious source of mistakes in the legal system potentially leading to wrongful convictions and miscarriages of justice. The current study examined the knowledge of a sample of police officers (n = 270) and psychologists (n = 63) in Indonesia regarding factors known to influence the validity of eyewitness testimony given by adults and children. Previous studies have documented that police and psychologists in Western countries have less-than-optimal knowledge about the psychology of eyewitness testimony. Similarly, our non-Western sample also demonstrated a lack of knowledge that may be damaging in the legal context such as the belief that recall of minor details indicates accuracy of memory. For both adult and child eyewitnesses, the psychologists performed significantly better than the police but at the item level these differences were small in size. Intriguingly, we also found that psychologists were more likely than the police officers to endorse the item about repression of memories. The findings show the need for teaching on the psychology of eyewitness testimony for professional groups involved in the legal arena.

• Magnussen, Svein & Stridbeck, Ulf (2020). Vurdering av troverdighet: hva sier forskningen anno 2020? Tidsskrift for strafferett. ISSN 1502-685X. 20(1), s. 6–17. doi: 10.18261/ISSN.0809-9537-2020-01-02. Fulltekst i vitenarkiv Vis sammendrag

  Artikkelen gir en oppdatert fremstilling av forskningen på løgn og løgnavsløring i et rettslig og samfunnsmessig perspektiv. Forskningen er klar: Det foreligger intet alternativ til etterforskning. Det er så å si umulig å avsløre løgn og uriktige forklaringer på grunnlag av hvordan vitner fremstår; det er heller ikke mulig på grunnlag av atferdsobservasjon å avsløre personer som seiler under falskt flagg i dagliglivet, eller personer med kriminelle hensikter. Artikkelen advarer mot kurs og programmer som tilbyr enkle oppskrifter på løgnavsløring.

• Rachlew, Asbjørn; Brøste, Inger-Lise; Melinder, Annika Maria D & Magnussen, Svein (2020). Recruiting Eyewitness Science in Criminal Investigations: The Pocket Man Case. Journal of Forensic Psychology Research and Practice. ISSN 2473-2850. 20(3), s. 205–213. doi: 10.1080/24732850.2020.1714407. Fulltekst i vitenarkiv Vis sammendrag

  Do surveillance shots and phantom drawings of the perpetrator in child abuse cases, images that are widely published in public media, contaminate the identifications made by young victims? This question was raised in the later phases of the investigations into a Norwegian child abuse case that involved a large number of victims, where a suspect was apprehended, and a photo lineup with the victims was planned. The police sought to answer the question by conducting a simple experiment: Two samples of participants – children in the age range of the real victims but from a different part of the country, and police cadets – were presented with the published photographs and drawings of the suspect; after a short interval, they were asked to pick the man they had seen in a 12-person photo lineup that was planned to be used with the real victims. The results showed that media exposure – surveillance shots and phantom drawings – in this case did not increase the probability of selecting the suspect. It is concluded that criminal investigations in some cases may profit from research evaluations of police procedures and eyewitness performance, supporting the investigative process by sorting out unreliable procedures and increasing the quality of the evidence.

• Brøste, Inger-Lise; Magnussen, Svein; Melinder, Annika Maria D & Rachlew, Asbjørn (2020). Forskning i etterforskning: Politiets kvalitetssikring av vitnekonfrontasjonene i lommemannsaken. Tidsskrift for strafferett. ISSN 1502-685X. 20(2), s. 146–155. doi: 10.18261/ISSN.0809-9537-2020-02-02. Fulltekst i vitenarkiv
• Baugerud, Gunn Astrid; Hansen, Helle Birgitte; Johnson, Miriam S.; Magnussen, Svein & Lamb, Michael E. (2020). Forensic interviews with preschool children: An analysis of extended interviews in Norway (2015-2017). Applied Cognitive Psychology. ISSN 0888-4080. 34(3), s. 654–663. doi: 10.1002/acp.3647. Fulltekst i vitenarkiv Vis sammendrag

  This study examined the quality of forensic interviews conducted by specially trained police officers in the Norwegian Barnahus between 2015 and 2017, using the sequential interview (SI) model, a Norwegian version of the extended interview model that has not previously been studied. Two hundred and seven interviews of alleged abused preschool children (3–7 years old) were selected from around the country. Developmental trends in interview dynamics and the pattern of disclosure were analyzed. Analyses showed that the interviews were long but involved few open-ended and many suggestive questions, especially in interviews with the youngest children who did not disclose. Because similar findings were obtained in previous studies of Norwegian interviews not using this model, the findings suggest that the SI interview model does little to improve the formal quality of forensic interviews with very young children, and show the need to develop new forms of interviewer training which are more intensive than those currently employed.

• Magnussen, Svein & Teigen, Karl Halvor (2020). Kognitive snarveier og slagsider i vurdering av bevis. Lov og Rett. ISSN 0024-6980. 59(1), s. 19–42. doi: 10.18261/issn.1504-3061-2020-01-03. Fulltekst i vitenarkiv
• Bjørndal, Ludvig Daae; McGill, Lucy; Magnussen, Svein J; Richardson, Stéphanie; Saraiva, Renan & Stadel, Marie [Vis alle 7 forfattere av denne artikkelen] (2020). Norwegian judges' knowledge of factors affecting eyewitness testimony: A 12-year follow-up. Psychiatry, Psychology and Law. ISSN 1321-8719. 28(5), s. 665–682. doi: 10.1080/13218719.2020.1837028. Fulltekst i vitenarkiv Vis sammendrag

  Eyewitness evidence often plays a critical role in decisions made in the criminal justice system. To evaluate eyewitness testimony accurately, judges must be aware of factors that can contaminate this type of evidence. In 2008, a survey of judges in Norway revealed a lack of awareness of several factors that affect eyewitness testimony. In the current study, a survey was administered to Norwegian judges (N=98) to evaluate their knowledge of factors that affect eyewitness testimony. Results showed that judges’ overall knowledge scores were similar to those reported in 2008, but substantial increases and decreases in knowledge were observed for specific factors. Additional analyses indicated that increased uncertainty regarding some eyewitness factors led to a decline in accuracy when compared to responses observed in 2008. The current study provides an updated assessment of judges’ knowledge of eyewitness factors and highlights the need for more comprehensive training for judges regarding these factors.

• Brennen, Tim & Magnussen, Svein (2020). Research on non-verbal signs of lies and deceit: A blind alley. Frontiers in Psychology. doi: 10.3389/fpsyg.2020.613410. Fulltekst i vitenarkiv
• Magnussen, Svein (2020). Er sikre vitner pålitelige vitner? Lov og Rett. ISSN 0024-6980. 59(5), s. 312–321. Fulltekst i vitenarkiv
• Dodier, Olivier; Melinder, Annika Maria D; Otgaar, Henry; Payoux, Mélany & Magnussen, Svein (2019). Psychologists and psychiatrists in court: What do they know about eyewitness memory? A comparison between experts in inquisitorial and adversarial legal systems. Journal of Police and Criminal Psychology. ISSN 0882-0783. 34, s. 254–262. doi: 10.1007/s11896-019-09339-0. Fulltekst i vitenarkiv
• Grøndahl, Pål; Wessel, Ellen Margrethe & Magnussen, Svein (2019). Blokkeres traumatiske minner fra bevisstheten? Tidsskrift for Den norske legeforening (Tidsskriftet). ISSN 0029-2001. 139(10), s. 1–5. doi: 10.4045/tidsskr.18.0936. Fulltekst i vitenarkiv Vis sammendrag

  Traumatiske hendelser fører ikke til amnesi for hendelsesforløpet, ifølge nyere hukommelsesforskning. Men både diagnosemanualer, fagfolk og rettssystemet opererer med psykogent betinget amnesi som forklaringsmodell.

• Kostopoulos, Maria Bjørdal; Iversen, Stine; Magnussen, Svein & Melinder, Annika Maria D (2019). Beliefs About Young Children as Witnesses: a Survey of Experienced Defense Lawyers and Psychological Expert Witnesses in Norway. International Journal on Child Maltreatment: Research, Policy and Practice. ISSN 2524-5236. 2, s. 309–322. doi: 10.1007/s42448-019-00029-2. Fulltekst i vitenarkiv
• Magnussen, Svein; Eilertsen, Dag-Erik; Stridbeck, Ulf; Teigen, Karl Halvor & Wessel, Ellen Margrethe (2017). Misforstått kritikk. Tidsskrift for Rettsvitenskap. ISSN 0040-7143. 130, s. 109–111. doi: 10.18261/issn.1504-3096-2017-01-06. Fulltekst i vitenarkiv
• Wessel, Ellen Margrethe; Eilertsen, Dag-Erik; Langnes, Espen; Magnussen, Svein & Melinder, Annika Maria D (2016). Disclosure of child sexual abuse: expressed emotions and credibility judgments of a child mock victim. Psychology, Crime and Law. ISSN 1068-316X. 22(4), s. 331–343. doi: 10.1080/1068316X.2015.1109087. Fulltekst i vitenarkiv
• Magnussen, Svein; Eilertsen, Dag-Erik; Teigen, Karl Halvor; Stridbeck, Ulf & Wessel, Ellen Margrethe (2016). Urimelig tvil: et tilsvar. Tidsskrift for Rettsvitenskap. ISSN 0040-7143. 129, s. 300–305. Fulltekst i vitenarkiv
• Baugerud, Gunn Astrid; Howe, Mark L; Magnussen, Svein & Melinder, Annika Maria D (2016). Maltreated and non-maltreated children's true and false memories of neutral and emotional word lists in the Deese/Roediger-McDermott task. Journal of Experimental Child Psychology. ISSN 0022-0965. 143, s. 102–110. doi: 10.1016/j.jecp.2015.10.007. Fulltekst i vitenarkiv
• Melinder, Annika Maria D; Burrell, Lisa Victoria; Eriksen, Maria Olaussen; Magnussen, Svein & Wessel, Ellen Margrethe (2016). The Emotional Child Witness Effect Survives Presentation Mode. Behavioral sciences & the law. ISSN 0735-3936. 34(1), s. 113–125. doi: 10.1002/bsl.2232. Fulltekst i vitenarkiv Vis sammendrag

  The emotional witness effect – the phenomenon whereby people are affected by the emotional manner in which a witness presents testimony – constitutes a possible source of wrongful decisions in legal contexts. One stereotypical view of abused children is that they should be sad when talking about their experiences of maltreatment, whereas children may in fact express a variety of emotional expressions when talking about abusive events. This raises the question as to whether there is an optimal mode in which to present child victim testimony that could reduce the possible influence of displayed emotions. In the present study, mock police interviews were carried out with female child actors, role-playing the victims of physical abuse by their stepfather, telling the same story with four emotional expressions (neutral, sad, angry, or positive). Laypersons (N = 465) were presented with the interviews as transcripts with the emotional reactions of the child witness noted, audio recordings, or videotaped recordings. Participants then rated the credibility of the victim witness. Replicating previous results, the “sad” expression elicited the highest credibility ratings across all modes of presentations. Presentation mode affected ratings of credibility, with the transcript versions resulting in the highest ratings.

• Melinder, Annika Maria D & Magnussen, Svein (2015). Psychologists and psychiatrists serving as expert witnesses in court: what do they know about eyewitness memory? Psychology, Crime and Law. ISSN 1068-316X. 21, s. 53–61. doi: 10.1080/1068316x.2014.915324. Fulltekst i vitenarkiv
• Magnussen, Svein (2015). Psychology of visual memory. I Wright, James D. (Red.), International Encyclopedia of the Social & Behavioral Sciences, 2nd Edition. Elsevier. ISSN 9780080970868. s. 175–180. Fulltekst i vitenarkiv
• Grøndahl, Pål & Magnussen, Svein (2015). Psykogene bevissthetsforstyrrelser. I Grøndahl, Pål & Stridbeck, Ulf (Red.), Rettspsykiatriske beretninger : om sakkyndighet og menneskeskjebner. Gyldendal Akademisk. ISSN 9788205484597. s. 126–145. Fulltekst i vitenarkiv Vis sammendrag

  Rettspsykiatrien har siden fagfeltets begynnelse på 1800-tallet vært gjenstand for debatt, kritikk og kontroverser. Debattene har gjerne oppstått i tilknytning til høyprofilerte og vanskelige saker som f.eks. 22. juli-saken i 2012. Denne boken går i dybden av rettspsykiatrien. Det beskrives hvordan fagfeltet ble til, hvordan rettspsykiatrien er bygget opp, hvilke regler som gjelder, og hvilke kliniske tilstander som er sentrale. Boken gir fengende fortellinger om rettspsykiatriske historier som kan være av interesse for leg og lærd. Samlet har boken 20 bidragsytere som belyser ulike temaområder. Slik sett er ikke boken en tradisjonell lærebok, men snarere en kasuistisk men samtidig forskningsbasert bok der rettspsykiatriens egentlige vesen stilles under lupen.

• Sneve, Markus Handal; Sreenivasan, Kartik K; Alnæs, Dag; Endestad, Tor & Magnussen, Svein (2015). Short-term retention of visual information: Evidence in support of feature-based attention as an underlying mechanism. Neuropsychologia. ISSN 0028-3932. 66, s. 1–9. doi: 10.1016/j.neuropsychologia.2014.11.004. Fulltekst i vitenarkiv
• Johnson, Miriam Sinkerud; Magnussen, Svein; Thoresen, Christian; Lønnum, Kyrre; Burrell, Lisa Victoria & Melinder, Annika Maria D (2015). Best practice recommendations still fail to result in action: A national 10-year follow-up of investigative interviews in CSA cases. Applied Cognitive Psychology. ISSN 0888-4080. 29(5), s. 661–668. doi: 10.1002/acp.3147. Fulltekst i vitenarkiv
• Magnussen, Svein; Eilertsen, Dag-Erik; Stridbeck, Ulf; Teigen, Karl Halvor & Wessel, Ellen Margrethe (2014). «UTOVER RIMELIG TVIL»? En kvantitativ studie av sikkerhet i bevisvurdering i straffesaker hos norske fagdommere og lekdommere. Tidsskrift for Rettsvitenskap. ISSN 0040-7143. 127, s. 384–396. Fulltekst i vitenarkiv
• Magnussen, Svein & Melinder, Annika Maria D (2014). Umiddelbarhetsprinsippet i bevisvurdering - en utfordring til rettssikkerheten? Lov og Rett. ISSN 0024-6980. 53, s. 607–621. Fulltekst i vitenarkiv
• Korsnes, Maria Stylianou & Magnussen, Svein (2014). fMRI evidence for dissociation between priming and conscious recognition. Journal of Integrative Neuroscience (JIN). ISSN 0219-6352. 13(3), s. 509–517. doi: 10.1142/S0219635214500149. Fulltekst i vitenarkiv
• Wise, Richard A; Sartori, Giuseppe; Magnussen, Svein & Safer, Martin A (2014). An examination of the causes and solutions to eyewitness error. Frontiers in Psychiatry. 5. doi: 10.3389/fpsyt.2014.00102. Fulltekst i vitenarkiv
• Baugerud, Gunn Astrid; Magnussen, Svein & Melinder, Annika Maria D (2014). High accuracy but low consistency in children's long-term recall of a real-life stressful event. Journal of Experimental Child Psychology. ISSN 0022-0965. 126, s. 357–368. doi: 10.1016/j.jecp.2014.05.009. Fulltekst i vitenarkiv
• Magnussen, Svein (2014). How I Started Living a Double Life in Psychological Science. Applied Cognitive Psychology. ISSN 0888-4080. 28(2), s. 287–288. doi: 10.1002/acp.2977. Fulltekst i vitenarkiv
• Magnussen, Svein; Eilertsen, Dag-Erik; Teigen, Karl Halvor & Wessel, Ellen Margrethe (2014). The Probability of Guilt in Criminal Cases: Are People Aware of Being 'Beyond Reasonable Doubt'? Applied Cognitive Psychology. ISSN 0888-4080. 28(2), s. 196–203. doi: 10.1002/acp.2978. Fulltekst i vitenarkiv
• Greenlee, Mark W. & Magnussen, Svein (2014). Probing human vision with spatial adaptation. I Geremek, Adam; Greenlee, Mark & Magnussen, Svein (Red.), Perception beyond gestalt: Progress in vision research. Routledge. ISSN 9780415658010. s. 98–117. Fulltekst i vitenarkiv
• Geremek, Adam; Greenlee, Mark W. & Magnussen, Svein (2014). Perception beyond Gestalt. Introductory remarks. I Geremek, Adam; Greenlee, Mark & Magnussen, Svein (Red.), Perception beyond gestalt: Progress in vision research. Routledge. ISSN 9780415658010. s. 1–5. Fulltekst i vitenarkiv
• Hofsten, Olov von; Hofsten, Claes von; Sulutvedt, Unni; Laeng, Bruno; Brennen, Tim & Magnussen, Svein (2014). Simulating newborn face perception. Journal of Vision. 14:16(13). doi: 10.1167/14.13.16. Fulltekst i vitenarkiv
• Melinder, Annika Maria D & Magnussen, Svein (2014). Psychologists and psychiatrists serving as expert witnesses in court: what do they know about eyewitness memory? Psychology, Crime and Law. ISSN 1068-316X. 21(1), s. 53–61. doi: 10.1080/1068316X.2014.915324. Fulltekst i vitenarkiv
• Magnussen, Svein; Safer, Martin A; Sartori, Giuseppe & Wise, Richard A (2013). What Italian defense attorneys know about factors affecting eyewitness accuracy: a comparison with U.S. and Norwegian samples. Frontiers in Psychiatry. 4. doi: 10.3389/fpsyt.2013.00028. Fulltekst i vitenarkiv
• Vogt, Stine Elisabeth & Magnussen, Svein (2013). Eye movements, memory and visual expertise. I Wagner, Christoph; Greenlee, Mark W. & Wolff, Christian (Red.), Aisthesis. Wahrnehmungsprozesse in Kunst und Technik. Verlag Schnell + Steiner GmbH. ISSN 9783795422417. s. 51–62. Fulltekst i vitenarkiv
• Mirandola, Chiara; Ferruzza, C; Cornoldi, C. & Magnussen, Svein (2013). Beliefs about memory among psychology students and their professors in psychodynamic clinical and experimental study programs. Revue européenne de psychologue appliquée. ISSN 1162-9088. 63(5), s. 251–256. doi: 10.1016/j.erap.2013.07.004. Fulltekst i vitenarkiv
• Wessel, Ellen Margrethe; Magnussen, Svein & Melinder, Annika Maria D (2013). Expressed emotions and perceived credibility of child mock victims disclosing physical abuse. Applied Cognitive Psychology. ISSN 0888-4080. 27, s. 611–616. doi: 10.1002/acp.2935. Fulltekst i vitenarkiv
• Magnussen, Svein (2013). Visual working memory. I Pashler, Harold (Red.), Encyclopedia of the Mind. Sage Publications. ISSN 9781412950572. s. 765–769. Fulltekst i vitenarkiv
• Sneve, Markus Handal; Magnussen, Svein; Alnæs, Dag; Endestad, Tor & D'Esposito, Mark (2013). Top–Down Modulation from Inferior Frontal Junction to FEFs and Intraparietal Sulcus during Short-term Memory for Visual Features. Journal of Cognitive Neuroscience. ISSN 0898-929X. 25, s. 1944–1956. doi: 10.1162/jocn_a_00426. Fulltekst i vitenarkiv
• Magnussen, Svein & Melinder, Annika Maria D (2012). What psychologists know and believe about memory: A survey of pratitioners. Applied Cognitive Psychology. ISSN 0888-4080. 26(1), s. 54–60. doi: 10.1002/acp.1795. Fulltekst i vitenarkiv
• Stridbeck, Ulf & Magnussen, Svein (2012). Opening Potentially Wrongful Convictions - Look to Norway. The Criminal Law Quarterly. ISSN 0011-1333. 58(2), s. 267–282. Fulltekst i vitenarkiv
• Fiore, Felicia; Cornoldi, Cesare; Beni, Rossana De; D'Urso, Valentina; Eilertsen, Dag-Erik & Magnussen, Svein (2012). Short-term memory for flavour. Journal of Cognitive Psychology. ISSN 2044-5911. 24(2), s. 134–139. doi: 10.1080/20445911.2011.598854. Fulltekst i vitenarkiv
• Stridbeck, Ulf & Magnussen, Svein (2012). Prevention of wrongful convictions: Norwegian legal safeguards and the Criminal Cases Review Commission. University of Cincinnati law review. ISSN 0009-6881. 80(4), s. 1373–1390. Fulltekst i vitenarkiv
• Magnussen, Svein & Melinder, Annika Maria D (2012). Vitnepsykologisk sakkyndighet i norsk rett: Hva vet norske psykologer og psykiatere om påliteligheten av vitners hukommelse? Tidsskrift for Norsk psykologforening (Psykologtidsskriftet). ISSN 0332-6470. 49(4), s. 338–347. Fulltekst i vitenarkiv
• Sneve, Markus Handal; Alnæs, Dag; Endestad, Tor; Greenlee, Mark W. & Magnussen, Svein (2012). Visual short-term memory: Activity supporting encoding and maintenance in retinotopic visual cortex. NeuroImage. ISSN 1053-8119. 63(1), s. 166–178. doi: 10.1016/j.neuroimage.2012.06.053. Fulltekst i vitenarkiv Vis sammendrag

  Recent studies have demonstrated that retinotopic cortex maintains information about visual stimuli during retention intervals. However, the process by which transient stimulus-evoked sensory responses are transformed into enduring memory representations is unknown. Here, using fMRI and short-term visual memory tasks optimized for univariate and multivariate analysis approaches, we report differential involvement of human retinotopic areas during memory encoding of the low-level visual feature orientation. All visual areas show weaker responses when memory encoding processes are interrupted, possibly due to effects in orientation-sensitive primary visual cortex (V1) propagating across extrastriate areas. Furthermore, intermediate areas in both dorsal (V3a/b) and ventral (LO1/2) streams are significantly more active during memory encoding compared with non-memory (active and passive) processing of the same stimulus material. These effects in intermediate visual cortex are also observed during memory encoding of a different stimulus feature (spatial frequency), suggesting that these areas are involved in encoding processes on a higher level of representation. Using pattern-classification techniques to probe the representational content in visual cortex during delay periods, we further demonstrate that simply initiating memory encoding is not sufficient to produce long-lasting memory traces. Rather, active maintenance appears to underlie the observed memory-specific patterns of information in retinotopic cortex.

• Wessel, Ellen Margrethe; Bollingmo, Guri Cecilie; Sønsteby, Carine; Eilertsen, Dag-Erik; Nielsen, Linda Marie & Magnussen, Svein (2012). The emotional witness effect: story content, emotional valence and credibility of a male suspect. Psychology, Crime and Law. ISSN 1068-316X. 18(5), s. 417–430. doi: 10.1080/1068316X.2010.502119. Fulltekst i vitenarkiv
• Wu, Esther Xiu Wen; Laeng, Bruno & Magnussen, Svein (2012). Through the eyes of the own-race bias: Eye-tracking and pupillometry during face recognition. Social Neuroscience. ISSN 1747-0919. 7(2), s. 202–216. doi: 10.1080/17470919.2011.596946. Fulltekst i vitenarkiv
• Sneve, Markus Handal; Alnæs, Dag; Endestad, Tor; Greenlee, Mark W. & Magnussen, Svein (2011). Modulation of activity in human visual area V1 during memory masking. PLOS ONE. 6(4). doi: 10.1371/journal.pone.0018651. Fulltekst i vitenarkiv
• Magnussen, Svein (2011). Vitnepsykologi. I Svartdal, Frode (Red.), Psykologi i praksis. Gyldendal Akademisk. ISSN 9788205415720. s. 313–318. Fulltekst i vitenarkiv
• Magnussen, Svein & Brennen, Tim (2011). Memory, Learning and cognition in education. Elsevier. ISSN 9780123814388. s. 85–91. Fulltekst i vitenarkiv Vis sammendrag

  "Artikler opprinnelig utgitt i 3.utg. av The International encyclopedia of education, 2010 - Forordet." (Kommentar i BIBSYS-posten)/tøf

• Melinder, Annika Maria D; Alexander, Kristen; Cho, Young Il; Goodman, Gail S; Thoresen, Christian & Lønnum, Kyrre [Vis alle 7 forfattere av denne artikkelen] (2010). Childrens eyewitness memory: A comparison of two interviewing strategies as realized by forensic professionals. Journal of Experimental Child Psychology. ISSN 0022-0965. 105(3), s. 156–177. doi: 10.1016/j.jecp.2009.04.004. Fulltekst i vitenarkiv
• Magnussen, Svein; Melinder, Annika Maria D; Stridbeck, Ulf & Raja, Abid Q (2010). Beliefs about factors affecting the reliability of eyewitness memory: A comparison of judges, jurors and the general public. Applied Cognitive Psychology. ISSN 0888-4080. 24(1), s. 122–133. doi: 10.1002/acp.1550. Fulltekst i vitenarkiv
• Korsnes, Maria Stylianou; Reiner, Miriam; Magnussen, Svein & Feldman, Marcus W. (2010). Visual recognition of shapes and textures: an fMRi study. Brain Structure and Function. ISSN 1863-2653. 214(4), s. 355–359. doi: 10.1007/s00429-010-0241-5. Fulltekst i vitenarkiv
• Magnussen, Svein & Wessel, Ellen Margrethe (2010). Displayed emotions in court: effects on credibility judgements. I Granhag, Per Anders (Red.), Forensic Psychology in Context Nordic and international approaches. Willan Publishing. ISSN 9781843928287. s. 247–263. Fulltekst i vitenarkiv Vis sammendrag

  Academics and researchers from the Nordic countries (Sweden, Iceland, Norway, Finland) have made a particularly strong contribution internationally to the rapidly developing disciplines of forensic and legal psychology. This book brings together the leading authorities in the field to look systematically at the central issues and concerns of their subject, looking at both investigative psychology and psychology in court. This book reflects the results of research in the Nordic countries themselves, but each chapter is at the same time concerned to situate their work within a broader comparative and international context. The book is a major contribution to the subject, and will be essential reading for anybody with interests in this field.

• Magnussen, Svein; Greenlee, Mark W.; Baumann, Oliver & Endestad, Tor (2009). Visual perceptual memory - anno 2008. I Bächman, Lars & Nyberg, Lars (Red.), Memory,Aging and the Brain. Psychology Press. ISSN 9781841696928. s. 53–75. Fulltekst i vitenarkiv
• Nilsen, Håvard & Magnussen, Svein (2009). Homo Academicus. I Gullestad, Siri Erika; Killingmo, Bjørn & Magnussen, Svein (Red.), Klinikk og laboratorium. Psykologi i hundre år. Universitetsforlaget. ISSN 9788215015637. s. 44–61. Fulltekst i vitenarkiv
• Magnussen, Svein; Nilsson, Lars-Göran; Ommundsen, Reidar & Ringnes, Hege Kristin (2009). Forskningslinjer. I Gullestad, Siri Erika; Killingmo, Bjørn & Magnussen, Svein (Red.), Klinikk og laboratorium. Psykologi i hundre år. Universitetsforlaget. ISSN 9788215015637. s. 207–225. Fulltekst i vitenarkiv
• Grenness, Carl-Erik & Magnussen, Svein (2009). Psykologi og kunst. Eksemplet Salvador Dali. I Hansen, Bjørg Røed & Magnussen, Svein (Red.), Psykologiens yttergrenser. Abstrakt forlag. ISSN 9788279352808. s. 159–195. Fulltekst i vitenarkiv
• Magnussen, Svein (2009). Psykologi og juss. Kan psykologi bidra til rettssikkerhet? I Hansen, Bjørg Røed & Magnussen, Svein (Red.), Psykologiens yttergrenser. Abstrakt forlag. ISSN 9788279352808. s. 111–130. Fulltekst i vitenarkiv
• Magnussen, Svein (2009). Implicit visual working memory. Scandinavian Journal of Psychology. ISSN 0036-5564. 50(6), s. 535–542. doi: 10.1111/j.1467-9450.2009.00783.x. Fulltekst i vitenarkiv
• Hansen, Bjørg Røed & Magnussen, Svein (2009). Introduksjon. I Hansen, Bjørg Røed & Magnussen, Svein (Red.), Psykologiens yttergrenser. Abstrakt forlag. ISSN 9788279352808. s. 9–13. Fulltekst i vitenarkiv
• Thoresen, Christian; Lønnum, Kyrre; Melinder, Annika Maria D & Magnussen, Svein (2009). Forensic Interviews with children in CSA Cases: A Large-Sample Study of Norwegian Police Interviews. Applied Cognitive Psychology. ISSN 0888-4080. 23(7), s. 999–1011. doi: 10.1002/acp.1534. Fulltekst i vitenarkiv
• Bollingmo, Guri Cecilie; Wessel, Ellen Margarethe; Sandvold, Yvonne; Eilertsen, Dag-Erik & Magnussen, Svein (2009). The effect of biased and non-biased information on judgments of witness credibility. Psychology, Crime and Law. ISSN 1068-316X. 15(1), s. 61–71. doi: 10.1080/10683160802131107. Fulltekst i vitenarkiv
• Bollingmo, Guri Cecilie; Wessel, Ellen Margarethe; Eilertsen, Dag-Erik & Magnussen, Svein (2008). Credibility of the emotional witness: A study of ratings by police investigators. Psychology, Crime and Law. ISSN 1068-316X. 14(1), s. 29-40–29-40. doi: 10.1080/10683160701368412. Fulltekst i vitenarkiv
• Magnussen, Svein; Wise, Richard A; Raja, AQ; Safer, Martin A; Pawlenko, Nell & Stridbeck, Ulf (2008). What judges know about eyewitness testimony: A comparison of Norwegian and US judges. Psychology, Crime and Law. ISSN 1068-316X. 14, s. 177–188. Fulltekst i vitenarkiv
• Magnussen, Svein; Melinder, Annika Maria D; Raja, Abid Q & Stridbeck, Ulf (2008). Faktorer som påvirker påliteligheten av øyevitner: Hva vet dommere og jurymedlemmer? Lov og Rett. ISSN 0024-6980. 47(8), s. 472–482. Fulltekst i vitenarkiv
• Baumann, Oliver; Endestad, Tor; Magnussen, Svein & Greenlee, Mark W. (2008). Delayed discrimination of spatial frequency for gratings of different orientation: behavioral and fMRI evidence for low-level perceptual memory stores in early visual cortex. Experimental Brain Research. ISSN 0014-4819. 188, s. 363–369. doi: 10.1007/s00221-008-1366-0. Fulltekst i vitenarkiv

Se alle arbeider i NVA

• Magnussen, Svein (2025). Vitnepsykologi 3.0. Abstrakt forlag. ISBN 9788279354093. 388 s. Fulltekst i vitenarkiv
• Magnussen, Svein (2017). Vitnepsykologi 2.0. Abstrakt forlag. ISBN 9788279353881. 361 s. Fulltekst i vitenarkiv
• Geremek, Adam; Greenlee, Mark & Magnussen, Svein (2014). Perception beyond gestalt: Progress in vision research. Routledge. ISBN 9780415658010. 236 s. Fulltekst i vitenarkiv
• Gullestad, Siri Erika; Killingmo, Bjørn & Magnussen, Svein (2009). Klinikk og laboratorium. Psykologi i hundre år. Universitetsforlaget. ISBN 9788215015637. 301 s. Fulltekst i vitenarkiv
• Hansen, Bjørg Røed & Magnussen, Svein (2009). Psykologiens yttergrenser. Abstrakt forlag. ISBN 9788279352808. 261 s. Fulltekst i vitenarkiv
• Gullestad, Siri Erika; Killingmo, Bjørn & Magnussen, Svein (2009). Laboratorium og klinikk. Psykologisk institutt i Oslo 100 år. Universitetsforlaget. ISBN 9788215015637. 301 s. Fulltekst i vitenarkiv
• Magnussen, Svein (2009). Vidnepsykologi. Klim. ISBN 9788779555372. 300 s. Fulltekst i vitenarkiv

Se alle arbeider i NVA

• Brennen, Tim & Magnussen, Svein (2023). Here is the truth about how to spot when someone is lying. Psyche. Fulltekst i vitenarkiv
• Magnussen, Svein & Stridbeck, Ulf (2020). Nesten alt du vet om løgn, er feil. Morgenbladet. ISSN 0805-3847. Fulltekst i vitenarkiv
• Magnussen, Svein (2015). Psykologi og rettssikkerhet. Psykologisk tidsskrift. ISSN 1501-7508. 19(1), s. 12–18. Fulltekst i vitenarkiv
• Burrell, Lisa Victoria; Melinder, Annika Maria D; Eriksen, Maria Olaussen; Magnussen, Svein & Wessel, Ellen (2014). The emotional child witness effect paired with presentation mode. Fulltekst i vitenarkiv
• Baugerud, Gunn Astrid; Howe, Mark; Magnussen, Svein & Melinder, Annika Maria D (2014). Maltreated children’s performance on the DRM task with emotional and neutral word lists. Fulltekst i vitenarkiv
• Magnussen, Svein & Brennen, Tim (2010). Memory. I Peterson, Penelope; Baker, Eva & McGaw, Barry (Red.), International Encyclopedia of Education, Third edition, Volume 5. Elsevier. ISSN 9780080448930. s. 197–203. Fulltekst i vitenarkiv
• Alnæs, Dag; Endestad, Tor; Magnussen, Svein; Sneve, Markus Handal; Spillmann, Lothar & Werner, John S. (2010). Perceptual filling-in of the blind spot: an fMRI study. Perception. ISSN 0301-0066. 39, s. 175–175. Fulltekst i vitenarkiv
• Sneve, Markus Handal; Alnæs, Dag; Endestad, Tor; Greenlee, Mark W. & Magnussen, Svein (2010). Retrieval-related activity in early visual areas. Perception. ISSN 0301-0066. 39, s. 38–38. Fulltekst i vitenarkiv
• Thomas, James P.; Endestad, Tor & Magnussen, Svein (2009). Representation of stimulus uncertainty effects on speeded discrimination performance. Perception. ISSN 0301-0066. 38, s. 137–138. Fulltekst i vitenarkiv
• Sneve, Markus Handal; Magnussen, Svein; Endestad, Tor & Greenlee, Mark W. (2009). Memory modulation of area V1. Perception. ISSN 0301-0066. 38, s. 178–178. Fulltekst i vitenarkiv
• Hansen, Bjørg Røed & Magnussen, Svein (2009). Introduksjon. I Hansen, Bjørg Røed & Magnussen, Svein (Red.), Psykologiens yttergrenser. Abstrakt forlag. ISSN 9788279352808. s. 9–12. Fulltekst i vitenarkiv
• Baumann, Oliver; Endestad, Tor; Magnussen, Svein & Greenlee, Mark W. (2008). Perceptual memory representations studied in delayed discrimination of spatial frequency - behavioral and fMRI evidence for high-fidelity visual stores in early visual cortex. NeuroImage. ISSN 1053-8119. 41, s. 88–88. Fulltekst i vitenarkiv
• Magnussen, Svein; Peterson, Abby & Sundin, Jan (2011). Evaluation of the Swedish Research Council's Criminology Programme. Swedish Research Council. ISSN 9789173071987. Fulltekst i vitenarkiv

Se alle arbeider i NVA