Inst. Psychologie und Arbeitswissenschaft

105 Items

Recent Submissions
ACT-Droid

Dörr, Lisa-Madeleine ; Russwinkel, Nele ; Prezenski, Sabine (2016)

ACT-Droid is a tool for directly connecting ACT-R with Android applications on smartphones or tablets. The advantage of this tool is that no prototyping of the application is needed. This tool is especially useful to evaluate applications according to usability by using general modeling approaches.

How to Uncover Sources of Unwarranted Practice Variation: A Case Study in Emergency Medicine

Feufel, Markus A. (2018-05)

Forty years of statistical database analyses have demonstrated the existence of unwarranted practice variation in care delivery, that is, variations independent of medical need, evidence, or patient preference. Alas, little is known about the underlying mechanisms and thus finding interventions to reduce unwarranted variations remains difficult, hampering quality, equity, and efficiency of care...

Decisionmaking in practice: The dynamics of muddling through

Flach, John M. ; Feufel, Markus A. ; Reynolds, Peter L. ; Henrickson Parker, Sarah ; Kellogg, Kathryn M. (2017-05)

An alternative to conventional models that treat decisions as open-loop independent choices is presented. The alterative model is based on observations of work situations such as healthcare, where decisionmaking is more typically a closed-loop, dynamic, problem-solving process. The article suggests five important distinctions between the processes assumed by conventional models and the reality ...

Manual flying and energy awareness

Müller, Simon ; Schreiter, Karolin ; Luckner, Robert ; Manzey, Dietrich (2017)

In order to enable pilots to better maintain energy awareness and energy management in manual flight, a new concept has been proposed, which transfers the demand control principle of fly-by-wire control laws also to the control of thrust. It includes a total-energy-related augmented thrust controller combined with a modified cockpit instrumentation enriched by specific energy displays. In order...

Enhancing manual flight precision and reducing pilot workload using a new manual control augmentation system for energy angle

Schreiter, Karolin ; Müller, Simon ; Luckner, Robert ; Manzey, Dietrich (2017)

With rising demands on flight precision and more complex flight trajectories, pilots' workload during manual flight is increasing. This is especially the case for thrust and spoiler control during approach and landing. The presented nxControl system enables pilots to manually control the longitudinal load factor nx instead of engine parameters and spoiler deflections. This load factor is equiva...

Demand control law for total energy angle tested at manual steep approaches

Schreiter, Karolin ; Müller, Simon ; Luckner, Robert ; Manzey, Dietrich (2018)

With rising demands on flight precision and more complex flight trajectories, pilots' workload during manual flight is increasing. This is especially the case for flight path and speed control with thrust and spoilers during approach and landing. The objective of the nxControl system is to enable pilots to manually control the longitudinal load factor nx instead of engine parameters and spoiler...

Untersuchung der mentalen Repräsentation von Energiemanagement bei der Flugzeugführung zur Entwicklung eines Pilotenassistenzsystems

Müller, Simon ; Manzey, Dietrich ; Bleyer, Anne ; Schreiter, Karolin ; Voigt, Anja ; Luckner, Robert (2013)

Um die mentale Repräsentation des Energiemanagements bei der manuellen Flugzeugführung zu untersuchen, wurde eine Simulatorkampagne mit n = 12 lizenzierten Verkehrspiloten durchgeführt. Ihre Aufgabe war es, künstlich generierte Höhen- und Geschwindigkeitsablagen auf dem Gleitpfad des Instrumentenlandesystems (ILS) im Endanflug zu korrigieren. Dabei wurde untersucht, ob und inwiefern sie von dem...

nxControl instead of pitch-and-power

Schreiter, Karolin ; Müller, Simon ; Luckner, Robert ; Manzey, Dietrich (2014)

A command system for manual control of the longitudinal load factor (nx) of an aircraft is designed that completes existing flight control command systems (e.g. sidesticks normal load factor nz). nxControl's aim is to assist pilots during manual flight by reducing the workload for monitoring flight parameters and the controlling of thrust and airbrakes. Important for nxControl concept is the di...

Simulatorstudie zur Ermittlung mentaler Handlungsmodelle von Piloten beim Energiemanagement

Müller, Simon ; Schreiter, Karolin ; Manzey, Dietrich (2013)

Im Rahmen des Forschungsprojektes "nxControl" wurde eine Simulatorstudie mit zwölf lizenzierten Verkehrspiloten zur Ermittlung mentaler Handlungsmodelle beim Energieabbau durchgeführt. Die Aufgabe der Piloten war es, drei Sink- und drei Landeanflüge mit variierten Randbedingungen zu absolvieren. Anhand der Versuchsergebnisse sollen Empfehlungen für die pilotenzentrierte Entwicklung eines Assist...

nxControl instead of pitch-and-power: a concept for enhanced manual flight control

Müller, Simon ; Schreiter, Karolin ; Manzey, Dietrich ; Luckner, Robert (2016)

A command system for manual control of the longitudinal load factor in flight path direction of an aircraft is designed that completes existing flight control command systems (e.g. with sidesticks that command normal load factor). The system is called nxControl. It aims to assist pilots during manual flight by reducing the workload for monitoring flight parameters as well as for controlling thr...

Verbesserung von Flugpräzision und Arbeitsbeanspruchung bei manuellen RNP-Anflügen durch Vorgaberegler und Anzeigen für den Energiewinkel (nxControl)

Schreiter, Karolin ; Müller, Simon ; Luckner, Robert ; Manzey, Dietrich (2016)

Mit steigenden Präzisionsanforderungen bei immer komplexeren Flugtrajektorien erhöht sich die Arbeitsbeanspruchung der Piloten im manuellen Flug besonders bei der Ansteuerung von Triebwerken und Bremsklappen. Die konventionelle Steuerung über Hilfsparameter wie Triebwerksdrehzahl bzw. Hebelstellung erlaubt keine exakte Vorhersage der Zustandsänderung. Stattdessen muss abgewartet und die Eingabe...

nxControl: Konzept zur Vorgaberegelung für die Längsbeschleunigung des Flugzeugs

Schreiter, Karolin ; Müller, Simon ; Luckner, Robert (2013)

Der zukünftige Luftverkehr erfordert präzisere Einhaltung von komplexeren Trajektorien. Automatische Flugführung mittels Autopilot und Autothrottle erlauben bereits heute die Einhaltung komplexer Flugtrajektorien. Jedoch muss stets gewährleistet sein, dass die Piloten die erhöhten Anforderungen an die Bahnführung auch im manuellen Flug erfüllen können. Moderne Verkehrsflugzeuge sind mit elektro...

Paper "Size Matters" Excel Data prepared for SPSS

Meier, Felix Christian ; Schöbel, Markus ; Feufel, Markus (2018)

The present excel file includes all data used for the study and it is prepared to be fed into SPSS. First column shows a number. Every car got number as it was collected during experiment. In the second column the pairs of legally and illegally parked cars are counted. In the third column and fifth column brand and model of each car are coded. The fourth column shows the values of a car brand s...

Granger causal connectivity dissociates navigation networks that subserve allocentric and egocentric path integration

Lin, Chin-Teng ; Chiu, Te-Cheng ; Wang, Yu-Kai ; Chuang, Chun-Hsiang ; Gramann, Klaus (2018)

Studies on spatial navigation demonstrate a significant role of the retrosplenial complex (RSC) in the transformation of egocentric and allocentric information into complementary spatial reference frames (SRFs). The tight anatomical connections of the RSC with a wide range of other cortical regions processing spatial information support its vital role within the human navigation network. To bet...

Asymmetric effects of false positive and false negative indications on the verification of alerts in different risk conditions

Wiczorek, Rebecca ; Meyer, Joachim (2016)

Indications from alerts or alarm systems can be the trigger for decisions, or they can elicit further information search. We report an experiment on the tendency to collect additional information after receiving system indications. We varied the proclivity of the alarm system towards false positive or false negative indications and the perceived risk of the situation. Results showed that false ...

Investigating benefits of likelihood alarm systems in presence of alarm validity information

Wiczorek, Rebecca ; Balaud, Magali ; Manzey, Dietrich (2015)

Providing operators additional information helping them to validate alarms has been found to be a countermeasure for problems related to the cry wolf effect (i.e., operators ignoring alarms). Adding information can be realized with likelihood alarm systems (LAS) or with access to alarm validity information (AVI). The two studies presented here examined behavior and performance consequences of t...

Implementing energy status in head-down cockpit displays: impact of augmented energy information on pilot’s performance

Müller, Simon ; Manzey, Dietrich ; Schreiter, Karolin ; Luckner, Robert (2015)

It is safety critical for pilots to be aware of the aircraft’s energy state in terms of proper altitude and airspeed. A loss of energy awareness is an important human factors issue in modern civil aircraft. In order to maintain the energy awareness and support the manual flying skills, several cockpit display concepts suggest to augment the current energy status of the aircraft on primary fligh...

Developing and validating an English version of the meCUE questionnaire for measuring user experience

Minge, Michael ; Thüring, Manfred ; Wagner, Ingmar (2016)

Based on the Component model of User Experience (CUE), a standardized questionnaire (meCUE) was developed measuring key aspects of user experience (UX) for interactive products. The questionnaire consists of 34 items and covers four components: product perceptions (usefulness, usability, visual aesthetics, status, commitment), user emotions (positive, negative), consequences of usage (intention...

Monitoring and cross-checking automation

Cymek, Dietlind Helene ; Jahn, S. ; Manzey, Dietrich (2016)

The present study addresses effects of human redundancy on automation monitoring and cross-checking. Thirty-six participants performed a multi-task, consisting of three subtasks that mimic basic work demands of operators in a control room of a chemical plant. One of the tasks was to monitor and cross-check a highly reliable and safety-critical automated process. Participants were randomly assig...

Image size influences visual search and perception of hemorrhages when reading Cranial CT: an eye-tracking study

Venjakob, Antje C. ; Marnitz, Tim ; Phillips, Peter ; Mello-Thoms, Claudia R. (2016)

Objective: The aim of this study was to explore reader gaze, performance, and preference during interpretation of cranial computed tomography (cCT) in stack mode at two different sizes. Background: Digital display of medical images allows for the manipulation of many imaging factors, like image size, by the radiologists, yet it is often not known what display parameters better suit human percep...