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  • 1. Balldin, Ulf
    et al.
    Derefeldt, Gunilla
    Eriksson, Lars
    Swedish Defence Research Agency, FOI,.
    Werchan, P. M.
    Andersson, Peter
    Yates, T. J.
    Color vision with rapid-onset acceleration2003Inngår i: Aviation, Space and Environmental Medicine, ISSN 0095-6562, E-ISSN 1943-4448, Vol. 74, nr 1, s. 29-36Artikkel i tidsskrift (Fagfellevurdert)
  • 2. Berglund, Aseel
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Willén, Bengt
    Svensson, Jonathan
    Petterstedt, Michael
    Lindahl, Björn
    Allerbo, Göran
    Combining visual, tactile and 3D audio displays to aid the dismounted soldier2008Konferansepaper (Annet vitenskapelig)
  • 3. Carlander, Otto
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Uni- and bimodal threat cueing with vibrotactile and 3D audio technologies in a combat vehicle2006Konferansepaper (Fagfellevurdert)
  • 4. Carlander, Otto
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Kindström, Mattias
    Horizontal localisation accuracy with COTS and professional 3D audio display technologies2006Konferansepaper (Fagfellevurdert)
  • 5. Carlander, Otto
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Oskarsson, Per-Anders
    Handling uni- and multimodal threat cueing with simultaneous radio calls in a combat vehicle setting2007Konferansepaper (Fagfellevurdert)
  • 6. Derefeldt, Gunilla
    et al.
    Skinnars, Örjan
    Alfredson, Jens
    Eriksson, Lars
    National Defence Research Establishment, Division of Human Sciences.
    Andersson, Peter
    Westlund, Johan
    Berggrund, Ulf
    Holmberg, J
    Santesson, R
    Improvement of tactical situation awareness with colour-coded horizontal-situation displays in combat aircraft1999Inngår i: Displays (Guildford), ISSN 0141-9382, E-ISSN 1872-7387, Vol. 20, nr 4, s. 171-184Artikkel i tidsskrift (Fagfellevurdert)
  • 7.
    Eriksson, Gabriella
    et al.
    Swedish National Road and Transport Research Institute.
    Patten, Christopher
    Swedish National Road and Transport Research Institute.
    Svenson, Ola
    Stockholm University.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Estimated time of arrival and debiasing the time saving bias2015Inngår i: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, nr 12, s. 1939-1946Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    The time saving bias predicts that the time saved when increasing speed from a high speed is overestimated, and underestimated when increasing speed from a slow speed. In a questionnaire, time saving judgements were investigated when information of estimated time to arrival was provided. In an active driving task, an alternative meter indicating the inverted speed was used to debias judgements. The simulated task was to first drive a distance at a given speed, and then drive the same distance again at the speed the driver judged was required to gain exactly 3 min in travel time compared with the first drive. A control group performed the same task with a speedometer and saved less than the targeted 3 min when increasing speed from a high speed, and more than 3 min when increasing from a low speed. Participants in the alternative meter condition were closer to the target. The two studies corroborate a time saving bias and show that biased intuitive judgements can be debiased by displaying the inverted speed.

    Practitioner Summary: Previous studies have shown a cognitive bias in judgements of the time saved by increasing speed. This simulator study aims to improve driver judgements by introducing a speedometer indicating the inverted speed in active driving. The results show that the bias can be reduced by presenting the inverted speed and this finding can be used when designing in-car information systems.

  • 8.
    Eriksson, Gabriella
    et al.
    Stockholms universitet.
    Svenson, Ola
    Stockholms universitet.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    The time-saving bias in static-cognitive and dynamic-driving judgements2013Inngår i: / [ed] U. Ansorge, E. Kircher, C. Lamm & H. Leder, 2013, s. 73-Konferansepaper (Fagfellevurdert)
  • 9.
    Eriksson, Gabriella
    et al.
    Stockholm University, Sweden.
    Svenson, Ola
    Stockholm University.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier. Swedish National Rd & Transport Research Institute, Linkoping, Sweden.
    The time-saving bias: Judgements, cognition and perception2013Inngår i: Judgment and Decision Making, E-ISSN 1930-2975, Vol. 8, nr 4, s. 492-497Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Biases in people's judgments of time saved by increasing the speed of an activity have been studied mainly with hypothetical scenarios (Svenson, 2008). The present study asked whether the classic time-saving bias persists as a perceptual bias when we control the speed of an activity and assess the perceived time elapsed at different speeds. Specifically, we investigated the time-saving bias in a driving simulator. Each participant was asked to first drive a distance at a given speed and then drive the same distance again at the speed she or he judged necessary to gain exactly three minutes in travel time compared to the first trip. We found that that the time-saving bias applies to active driving and that it affects the choice of driving speed. The drivers' time-saving judgements show that the perception of the time elapsed while driving does not eliminate the time-saving bias.

  • 10.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Age, cognitive load, and multimodal effects on driver response to directional warning2019Inngår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 76, s. 147-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Inattention can be considered a primary cause of vehicular accidents or crashes, and in-car warning signals are applied to alert the driver to take action even in automated vehicles. Because of age related decline of the older driver's abilities, in-car warning signals may need adjustment to the older driver. We therefore investigated the effects of uni-, bi- and trimodal directional warnings (i.e., light, sound, vibration) on young and older drivers' responses in a driving simulator. A young group of 15 drivers (20-25 years of age) and an older group of 16 drivers (65-79 years of age) participated. In the simulations, warning signal was presented at the left, the center, or the right in front of the participant. With a warning at the left, the center, and the right the correct response was to steer to the right, brake, and steer to the left, respectively. The main results showed the older drivers' responses were slower for each type of warning compared with the young drivers' responses. Overall, the responses were slower with an added cognitively loading task. The only multimodal type of warning inducing overall faster response than its constituent warning types was the vibration-sound, and only for the older drivers. Additionally, with the groups' responses collapsed, such a true multimodal effect on response time also showed for the center vibration-sound warning (i.e., braking response). The only multimodal warning showing clear reduction in response errors compared with its constituent warning types was the vibration-sound for the older drivers during extra cognitive load. The main conclusion is that older drivers can benefit from bimodal warning, as compared with unimodal, in terms of faster and more accurate response. The potential superiority of trimodal warning is nevertheless argued.

  • 11.
    Eriksson, Lars
    Swedish Defence Research Agency, FOI, Sweden.
    Toward a visual flow integrated display format to combat pilot spatial disorientation2010Inngår i: The International journal of aviation psychology, ISSN 1050-8414, E-ISSN 1532-7108, Vol. 20, nr 1, s. 1-24Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Aiming to ascertain basic display guidelines for improved support of pilot spatial orientation (SO), the visual resonance with the perceptual mechanism for SO was explored in 2 experiments. Postural responses indicated the efficiency of visual cues to control proprioception and equilibrium sense. A display design is suggested that integrates the results with the concepts for an operational head-up display symbology. By means of improved perception of integrated pitch, roll, and yaw information and resonance of synthetic visual flow with the SO mechanism, the design may in the future contribute to combatting pilot spatial disorientation.

  • 12.
    Eriksson, Lars
    Department of Psychology, Uppsala University,.
    Visual flow display for pilot spatial orientation2010Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Pilot spatial disorientation (SD) is a significant cause of incidents and fatal accidents in aviation. The pilot is susceptible to SD especially in low visibility when the visual system is deprived of information from outside the cockpit. This thesis presents the notion of visual flow displays as enhancement of symbology on flight displays primarily in low visibility for improved support of the pilot’s spatial orientation (SO) and control actions.

    In Studies I and II, synthetic visual flow of forward ego-motion was presented on displays and postural responses were used as measures of display effectiveness in determining SO. The visual flow significantly affected SO, and although the increased stimulation of the visual periphery from a width of 45° to about 105° increased the effects there was no further effect at a width of about 150° (Studies I and II). Studies I and II also showed that omitting 20°- or 30°-wide central fields of view from the visual flow either reduced or not reduced the effects. Further, although inconclusive, Study II may indicate that horizon symbology in central visual field may enhance the effects of peripheral visual flow. The appropriate integration of peripheral visual flow with the head-up display symbology of the Gripen aircraft was presented.

    Acceleration in a human centrifuge was used in Study III to investigate the effects of synthetic visual flow on the primarily vestibular-dependent somatogravic illusion of pitch-up. Two experiments revealed a reduced illusion with the visual flow. The results of Experiment 2 showed the visual flow scene not only reduced the illusion compared with a darkness condition but also compared with the visual scene without visual flow. Thus, similar to the main findings of Studies I and II, synthetic visual flow can significantly affect SO and supports the visually dependent SO system in an essential manner.

  • 13.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Berglund, Aseel
    Willén, Bengt
    Svensson, Jonathan
    Petterstedt, Michael
    Carlander, Otto
    Lindahl, Björn
    Allerbo, Göran
    On visual, vibrotactile and 3D audio directional cues for dismounted soldier waypoint navigation2008Konferansepaper (Fagfellevurdert)
  • 14.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Bolling, Anne
    Alm, Torbjörn
    Andersson, Anders
    Ahlström, Christer
    Blissing, Björn
    Nilsson, Göran
    LDW or rumble strips in unintentional lane departures: Driver acceptance and performance2012Inngår i: Advances in Human Aspects of Road and Rail Transportation / [ed] N.A. Stanton, CRC Press, 2012, s. 77-86Konferansepaper (Fagfellevurdert)
  • 15.
    Eriksson, Lars
    et al.
    National Defence Research Establishment, Division of Human Sciences.
    Börjesson, Erik
    Uppsala universitet.
    An application of the optic sphere theory in discrimination of slant with minimal information1997Inngår i: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 38, nr 4, s. 275-287Artikkel i tidsskrift (Fagfellevurdert)
  • 16.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Lundqvist, Linda-Marie
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Age and cognitive load effects on response to multisensory warning in simulated driving2015Konferansepaper (Fagfellevurdert)
  • 17.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Palmqvist, Lisa
    Umeå University.
    Andersson Hultgren, Jonas
    Swedish National Road and Transport Research Institute.
    Blissing, Björn
    Swedish National Road and Transport Research Institute.
    Nordin, Steven
    Umeå University.
    Performance and presence with head-movement produced motion parallax in simulated driving2015Inngår i: Transportation Research Part F: Traffic Psychology and Behaviour, ISSN 1369-8478, E-ISSN 1873-5517, Vol. 34, s. 54-64Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Driving simulator studies can reveal relevant and valid aspects of driving behavior, but underestimation of distance and speed can negatively affect the driver’s performance, such as in performance of overtaking. One possible explanation for the underestimation of distance and speed is that two-dimensional projection of the visual scene disrupts the monocular-based illusory depth because of conflicting binocular and monocular information of depth. A possible solution might involve the strengthening of the monocular information so that the binocular information becomes less potent. In the present study, we used an advanced high-fidelity driving simulator to investigate whether adding the visual depth information of motion parallax from head movement affects sense of presence, judgment of distance and speed, and performance measures coupled with overtaking. The simulations included two types of driving scenario in which one was urban and the other was rural. The main results show no effect of this head-movement produced motion parallax on sense of presence, head movement, time to collision, distance judgment, or speed judgment. However, the results show an effect on lateral positioning. When initiating the overtaking maneuver there is a lateral positioning farther away from the road center as effect of the motion parallax in both types of scenario, which can be interpreted as indicating use of naturally occurring information that change behavior at overtaking. Nevertheless, only showing tendencies of effects, absent is any clear additional impact of this motion parallax in the simulated driving.

  • 18.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Tribukait, Arne
    von Hofsten, Claes
    Eiken, Ola
    On reducing the somatogravic illusion with HMD conveyed visual flow2006Konferansepaper (Fagfellevurdert)
  • 19.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Tribukait, Arne
    von Hofsten, Claes
    Eiken, Ola
    Reducerad "somatogravic illusion" med huvudmonterad display presentation av syntetiskt visuellt flöde2006Konferansepaper (Fagfellevurdert)
  • 20.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Undén, Katarina
    von Hofsten, Claes
    Towards wide-field display of the Gripen HUD interface to combat spatial disorientation2005Konferansepaper (Fagfellevurdert)
  • 21.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    van Erp, Jan
    Carlander, Otto
    Levin, Britta
    van Veen, Hendrik
    Veltman, Hans
    Taktil och visuell indikering av hot med stridsflygscenario i dynamiska flygsimulatorn2006Konferansepaper (Fagfellevurdert)
  • 22.
    Eriksson, Lars
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    van Erp, Jan
    Carlander, Otto
    Levin, Britta
    van Veen, Hendrik
    Veltman, Hans
    Vibrotactile and visual threat cueing with high G threat intercept in dynamic flight simulation2006Konferansepaper (Fagfellevurdert)
  • 23. Eriksson, Lars
    et al.
    von Hofsten, Claes
    Uppsala universitet.
    Effects of visual flow display of flight maneuvers on perceived spatial orientation2005Inngår i: Human Factors, ISSN 0018-7208, E-ISSN 1547-8181, Vol. 47, nr 2, s. 378-393Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Postural responses were utilized as measures of the effectiveness of a wide-angle visual flow display in determining perceived spatial orientation (SO). The general experimental setup included a 150 degrees x 34 degrees wide-field display showing flight over computer-generated ground with horizon. Simulated roll maneuvers on this display induced postural sway in the observer that was registered by a head-tracker system. Two experiments with 16 participants in each investigated the effects of visual flow, display exclusions in the central visual field, and display extensions into the visual periphery. Clear vestibular and proprioceptive suppression effects were demonstrated on postural sway with the inclusion of visual flow of forward ego motion in roll maneuvers. Compared with the full view, up to 20 degrees x 20 degrees central field omission either did not reduce the effect or reduced the effect but, frequently, only moderately. Limiting the display area to 45 degrees in the horizontal dimension reduced display effectiveness significantly, whereas a 105 degrees area did not, compared with the full view. Utilizing postural responses as indications of visual display resonance with our SO mechanism, actual or potential applications of this research include the design of an interface integrating flight-adapted visual flow to counteract or reduce pilot spatial disorientation.

  • 24.
    Eriksson, Lars
    et al.
    FOI.
    von Hofsten, Claes
    Uppsala Universitet.
    Tribukait, Arne
    FOI.
    Eiken, Ola
    FOI.
    Andersson, Peter
    Hedström, Johan
    Chalmers tekniska högskola.
    Visual flow scene effects on the somatogravic illusion in non-pilots2008Inngår i: Aviation, Space and Environmental Medicine, ISSN 0095-6562, E-ISSN 1943-4448, Vol. 79, nr 9, s. 860-866Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Introduction: The somatogravic illusion (SGI) is easily broken when the pilot looks out the aircraft window during daylight flight, but it has proven difficult to break or even reduce the SGI in non-pilots in simulators using synthetic visual scenes. Could visual-flow scenes that accommodate compensatory head movement reduce the SGI in naïve subjects? Methods: We investigated the effects of visual cues on the SGI induced by a human centrifuge. The subject was equipped with a head-tracked, head-mounted display (HMD) and was seated in a fixed gondola facing the center of rotation. The angular velocity of the centrifuge increased from near zero until a 0.57-G centripetal acceleration was attained, resulting in a tilt of the gravitoinertial force vector, corresponding to a pitch-up of 30°. The subject indicated perceived horizontal continuously by means of a manual adjustable-plate system. We performed two experiments with within-subjects designs. In Experiment 1, the subjects (N = 13) viewed a darkened HMD and a presentation of simple visual flow beneath a horizon. In Experiment 2, the subjects (N = 12) viewed a darkened HMD, a scene including symbology superimposed on simple visual flow and horizon, and this scene without visual flow (static). Results: In Experiment 1, visual flow reduced the SGI from 12.4 ± 1.4° (mean ± SE) to 8.7 ± 1.5°. In Experiment 2, the SGI was smaller in the visual flow condition (9.3 ± 1.8°) than with the static scene (13.3 ± 1.7°) and without HMD presentation (14.5 ± 2.3°), respectively. Conclusion: It is possible to reduce the SGI in non-pilots by means of a synthetic horizon and simple visual flow conveyed by a head-tracked HMD. This may reflect the power of a more intuitive display for reducing the SGI.  

  • 25. Fischer, Martin
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Oeltze, Katarina
    Evaluation of methods for measuring speed perception in a driving simulator2012Konferansepaper (Fagfellevurdert)
  • 26.
    Gröhn, Cornelia
    et al.
    Karlstads universitet.
    Norgren, Elin
    Karlstads universitet.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    A systematic review of the neural correlates of multisensory integration in schizophrenia2022Inngår i: Schizophrenia Research: Cognition, E-ISSN 2215-0013, Vol. 27, s. 1-25, artikkel-id 100219Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Multisensory integration (MSI), in which sensory signals from different modalities are unified, is necessary for our comprehensive perception of and effective adaptation to the objects and events around us. However, individuals with schizophrenia suffer from impairments in MSI, which could explain typical symptoms like hallucination and reality distortion. Because the neural correlates of aberrant MSI in schizophrenia help us understand the physiognomy of this psychiatric disorder, we performed a systematic review of the current research on this subject. The literature search concerned investigated MSI in diagnosed schizophrenia patients compared to healthy controls using brain imaging. Seventeen of 317 identified studies were finally included. To assess risk of bias, the Newcastle-Ottawa quality assessment was used, and the review was written according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA). The results indicated that multisensory processes in schizophrenia are associated with aberrant, mainly reduced, neural activity in several brain regions, as measured by event-related potentials, oscillations, activity and connectivity. The conclusion is that a fronto-temporal region, comprising the frontal inferior gyrus, middle temporal gyrus and superior temporal gyrus/sulcus, along with the fusiform gyrus and dorsal visual stream in the occipital-parietal lobe are possible key regions of deficient MSI in schizophrenia.

    Fulltekst (pdf)
    fulltext
  • 27. Johansson, Emma
    et al.
    Karlsson, E.
    Larsson, E.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Implementation and evaluation of lane departure warning and assistance systems2012Inngår i: Advances in Human Aspects of Road and Rail Transportation / [ed] N.A. Stanton, USA publshing , 2012, s. 37-46Konferansepaper (Fagfellevurdert)
  • 28. Jungert, Erland
    et al.
    Grönwall, C.
    Hallberg, N.
    Kylesten, B.
    Lantz, F
    Eriksson, Lars
    FOI (Swedish Defence Research Agency), Linköping.
    A generic architecture for surveillance systems2010Inngår i: DSM 2010: Proceedingsof the Sixteenth International Conference on Distributed Multimedia Systems, 2010, s. 57-63Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Surveillance systems are generally intended for the protection of physical objects such as stationary installations and transport vehicles. Development of surveillance systems is an extensive development process, which involves considerations of a large number of design aspects that relates to a variety of disciplines, e.g. sensors systems, communications, decision-support functionality, multimedia usage and design and user interaction. Furthermore, there is an extensive need for a comprehensive understanding of the usage domain. Needs and requirements analyses are of utmost importance when developing surveillance systems. The objective of the work presented is a generic architecture for surveillance systems. The outline of the architecture is based on needs assessment and on analysis of required capabilities. The architecture comprehensively describes how surveillance capabilities are achieved by processes, actors and systems support.

  • 29. Jungert, Erland
    et al.
    Grönwall, C.
    Hallberg, N.
    Kylesten, B.
    Lantz, F.
    Eriksson, Lars
    FOI (Swedish Defence Research Agency), Linköping.
    Capability engineering for development of security systems2010Inngår i: The 1st National Symposium on Technology and Methodology for Security and Crisis Management, 2010, s. 42-Konferansepaper (Annet vitenskapelig)
  • 30.
    Lidestam, Björn
    et al.
    Swedish National Road and Transport Research Institute; Linköping University, Sweden.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Eriksson, Olle
    Swedish National Road and Transport Research Institute, Sweden.
    Speed perception affected by field of view: Energy-based versus rhythm-based processing2019Inngår i: Transportation Research Part F: Traffic Psychology and Behaviour, ISSN 1369-8478, E-ISSN 1873-5517, Vol. 65, s. 227-241Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Two experiments were carried out to test speed perception dependency on field of view (FoV), virtual road markings (VRMs), and presentation orders. The primary purpose was to examine how the extent of the optic flow (foremost peripherally–vertically) informs the driver about egospeed. A second purpose was to examine different task demands and stimulus characteristics supporting rhythm-based versus energy-based processing. A third purpose was to examine speed changes indicative of changes in motion sensitivity. Participants were tested in a car simulator, with FoV resembling low front-door windows, and with VRMs inside the car. Three main results were found. Larger FoV, both horizontally and peripherally–vertically, significantly reduced participants' speed, as did VRMs. Delineator posts and road center lines were used for participants' rhythm-based processing, when the task was to drive at target speeds. Rich motion-flow cues presented initially resulted in lower egospeed in subsequent conditions with relatively less motion-flow cues. The practical implication is that non-iconic, naturalistic and intuitive interfaces can effectively instill spontaneous speed adaptation in drivers.

    Fulltekst (pdf)
    Lidestam2019
  • 31. Lif, Patrik
    et al.
    Oskarsson, Per-Anders
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Transmission and reception of commander's intent in a hierarchical chain of command2010Konferansepaper (Fagfellevurdert)
  • 32.
    Lindblom, Sophia
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Hiltunen, Arto
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Criminality, thinking patterns and treatment effects: Evaluation of the Swedish cognitive intervention programme ‘new challenges’ targeting adult men with a criminal lifestyle2018Inngår i: Journal of Scandinavian Studies in Criminology and Crime Prevention, ISSN 1404-3858, E-ISSN 1651-2340, Vol. 19, s. 204-224Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The cognitive intervention programme 'New Challenges' targeting adult men with a criminal lifestyle was evaluated in a pilot study. The participants were divided into a cognitive treatment group (n = 32) and a control group (n = 11). In the control group, six participants had no treatment and five participated in 12-step treatment. The participants were measured pre and post using the Psychological Inventory of Criminal Thinking Styles (PICTS), the abridged version of sense of coherence (SOC), Positive and Negative Affect Scale, and Bergström's quality of programme delivery (QPD). The results of the treatment group showed that criminal thinking patterns dropped significantly from high values to close to normal level. SOC and positive affect increased significantly in the treatment group. Both SOC and positive affect showed positive correlation with QPD. Regarding the possible influence of the 12-step treatment, there was no difference in the control group between participants receiving 12-step treatment and those not receiving treatment. The main conclusion is that the cognitive treatment programme 'New Challenges' can contribute to reduced criminal thinking and increased SOC and positive affect, which may prove to be important precursors of reduced criminality.

    Fulltekst (pdf)
    Criminality, thinking patterns and treatment e ff ects – evaluation of the Swedish cognitive intervention programme ‘ new challenges ’ targeting adult men with a criminal lifestyle
  • 33.
    Lindblom, Sophia
    et al.
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Hiltunen, Arto
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier.
    Evaluation of the Cognitive Intervention Programme "A New Direction" Targeting Young Offenders in Sweden2017Inngår i: Journal of Scandinavian Studies in Criminology and Crime Prevention, ISSN 1404-3858, E-ISSN 1651-2340, ISSN 1404-3858, Vol. 18, nr 2, s. 176-190Artikkel i tidsskrift (Fagfellevurdert)
  • 34.
    Oskarsson, Per-Anders
    et al.
    FOI, Totalförsvarets forskningsinstitut.
    Eriksson, Lars
    VTI, Statens väg- och transportforskningsinstitut.
    Carlander, Otto
    Motorola Mobility.
    Enhanced perception and performance by multimodal threat cueing in simulated combat vehicle2012Inngår i: Human Factors, ISSN 0018-7208, E-ISSN 1547-8181, Vol. 54, nr 1, s. 121-136Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective:In a simulated combat vehicle, uni-, bi-, and trimodal cueing of direction to threat were compared with the purpose to investigate whether multisensory redundant information may enhance dynamic perception and performance.                 

    Background: Previous research has shown that multimodal display presentation can enhance perception of information and task performance.                 

    Method: Two experiments in a simulated combat vehicle were performed under the instructions to turn the vehicle toward the threat as fast and accurately as possible after threat cue onset. In Experiment 1, direction to threat was presented by four display types: visual head-down display, tactile belt, 3-D audio, and trimodal with the three displays combined. In Experiment 2, direction to threat was presented by three display types: visual head-up display (HUD)–3-D audio, tactile belt–3-D audio, and trimodal with HUD, tactile belt, and 3-D audio combined.                 

    Results: In Experiment 1, the trimodal display provided overall best performance and perception of threat direction. In Experiment 2, both the trimodal and HUD–3-D audio displays led to overall best performance, and the trimodal display provided overall the best perception of threat direction. None of the trimodal displays induced higher mental workload or secondary task interference.                 

    Conclusion: The trimodal displays provided overall enhanced perception and performance in the dynamically framed threat scenario and did not entail higher mental workload or decreased spare capacity.                 

    Application: Trimodal displays with redundant information may contribute to safer and more reliable peak performance in time-critical dynamic tasks and especially in more extreme and stressful situations with high perceptual or mental workload.                 

     

  • 35. Oskarsson, Per-Anders
    et al.
    Eriksson, Lars
    Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för psykologi.
    Lif, Patrik
    Lindahl, Björn
    Hedström, Johan
    Multimodal threat cueing in simulated combat vehicle2008Inngår i: Proceedings of the HFES 52nd Annual Meeting, Thousand Oaks: Sage Publications, 2008, s. 1287-1291Konferansepaper (Fagfellevurdert)
  • 36.
    Söderström, Sophia
    et al.
    University of Jyväskylä, Finland.
    Hiltunen, Arto
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Eriksson, Lars
    Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), Institutionen för sociala och psykologiska studier (from 2013).
    Lappalainen, Raimo
    University of Jyväskylä, Finland.
    Salutogenesis as a Mediator in Decreased Criminal Thinking: An Evaluation of Cognitive Programs for Juvenile and Adult Offenders2024Inngår i: Journal of Forensic Psychology Research and Practice, ISSN 2473-2850, E-ISSN 2473-2842Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This study is based on two previous studies that showed a post-treatment decrease in total criminal thinking (PICTS) and an increase in total sense of coherence (SOC) among youths and adults. The current study investigated whether these interventions changed the sub-scales of PICTS and SOC, and whether an increase in SOC would mediate a decrease in PICTS. Among both groups, the mean value of the sub-factors of PICTS decreased by the interventions, and increased for SOC sub-factors meaningfulness and manageability. Only among the adults, the increase in total sense of coherence and the sub-factor of manageability mediated the decrease of criminal thinking. 

    Fulltekst (pdf)
    fulltext
  • 37.
    van Erp, Jan
    et al.
    Department Human Interfaces, TNO Human Factors.
    Veltman, J. E.
    TNO Human Factors.
    Vos, W. K.
    TNO Human Factors.
    Eriksson, Lars
    FOI.
    Levin, Britta
    FOI.
    Carlander, Otto
    FOI.
    Tactile cueing effects on performance in simulated aerial combat with high acceleration2007Inngår i: Aviation, Space and Environmental Medicine, ISSN 0095-6562, E-ISSN 1943-4448, Vol. 78, nr 12, s. 1128-1134Artikkel i tidsskrift (Fagfellevurdert)
1 - 37 of 37
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