Hazard anticipation of young novice drivers - SWOV

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Gonadotropin releasing hormone Gray matter Gonadotropin-releasing hormone or GnRH is considered a neurohormone. GnRH stimulates the synthesis and secretion of the gonadotropins that regulates normal growth, sexual development, and reproductive function. GnRH activity is very low during childhood, and is activated at puberty. Gray matter is one of the two components of the central nervous system and is mainly made up of neuronal cell bodies. The other component is white matter. Decrease in gray matter is related to synaptic pruning or also named dendridic and axonal arborisation. Because of synaptic pruning the brain operates more effectively. Gyrus cinguli Anterior Gyrus cinguli Posterior Hippocampus HPA-axis Frontal part of the gyrus cinguli. The gyrus cinguli is a structure of the limbic system. The gyrus cinguli anterior gets activated when some form of conflict is elicited such as in the Stroop task. Gyrus cinguli posterior is the hind part of gyrus cinguli. The gyrus cinguli posterior has a memory related function and gets activated by emotional stimuli. A structure within the limbic system that plays an important role in the consolidation of information from short-term memory to long-term memory and spatial navigation. Hypothalamic-Pituitary-Adrenal axis. An important role of the HPA response to stressors is to restore the physiological balance to prevent overreaction of defence mechanisms to stress. How the HPA axis functions depends to a large extend on sex hormones (testosterone and oestrogens). 305
Hypothalamus Inferior frontal Gyrus Insula Insular cortex Limbic system A structure within the limbic system involved in controlling many bodily functions (e.g. body temperature, hunger, thirst, fatigue, sleep, and circadian cycles). The inferior frontal gyrus plays a role in inhibition and risk aversion. The insulae or the insular cortex. The insulae play a role in diverse functions usually linked to emotion or the regulation of the body's homeostasis. These functions include perception, motor control, selfawareness, cognitive functioning, and interpersonal experience. The insulae get activated when deviant stimuli embedded in a stream of continuous stimuli are signaled. See Insula. With limbic systems a group of subcortical areas are denoted that among others play a role in experiencing negative emotions (the amygdala), feelings of anticipated pleasure (the nucleus accumbens), motivation (the gyrus cinguli anterior), long term memory storage (the hippocampus) and regulation of emotions not involving top-down control by the PFC (the hypothalamus). The gyrus cinguli is actually not considered to be a part of the limbic systems, but is closely related to the limbic systems. 306
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Hazard anticipation of young novice
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SWOV-Dissertatiereeks, Leidschendam
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Promotores: Prof. dr. W.H. Brouwer
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development of hazard perception te
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Table of contents 1. General introd
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1. General introduction 1.1. Hazard
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27% of all driver fatalities were d
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eported 73 car crashes during the p
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with respondents that started their
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2. Determinants that influence haza
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planning of a trip, choice of the m
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that encompasses the entire second
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peaks at 16.7 years of age in girls
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Figure 2.2. Model of the different
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Keating (2007) mentioned the matura
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Table 2.1. Relative fatality ratios
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When do these sex differences emerg
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Functional brain differences in boy
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oth groups had in common was their
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3. Extroversion: Extrovert persons
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is less in these brain areas, but a
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2.4.2. Peer group influences In ado
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deduced that car drivers younger th
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or little interference with the dri
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2.4.4. Socioeconomic and cultural b
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Preusser, 2002). The crash rate of
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impact on road safety. Despite the
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condition for the older, more exper
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person (e.g. a passenger or a pedes
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tasks was 3.10, 95% CI [1.73, 5.47]
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traffic situation is safe enough to
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2.6.1. Exposure In Section 1.2, the
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58 56 Male Drivers Female Drivers S
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100 Killed car occupants aged 18-24
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less well equipped to detect and re
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3.2. Hazard anticipation A hazard i
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Drivers are aware of hazards when t
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1. Possible other road users on col
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oriented and the vertical axis is t
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away from me, given the particular
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the task demands. The range of acce
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Figure 3.4. Zero-risk model (Näät
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with FTD, poor monitoring of the ri
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elatively high speed in the same di
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only associated with top-down activ
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information transformation processe
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(consciously) controlled action reg
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on the left lane of a motorway (in
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3.7.1, 3.7.2 and 3.7.3. This is don
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driver does not think that she or h
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for experienced drivers even in cir
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sound was heard) and some participa
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stage. In this stage, learners comm
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A theory that explains how we may l
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were about to turn left while their
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4. Hazard anticipation, age and exp
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hazards, drivers have to imagine a
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overview of their studies: McKenna
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with regard to the risk felt in the
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Participants were requested to pres
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of the visual acuity in the fovea.
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working memory. Both bottom-up proc
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without gaze control (the gray arro
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urban areas than on rural roads, no
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the right between the parked cars i
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that in the video clips no visible
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• Young learner drivers (age rang
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• Did you have moments that you t
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difference between overt latent haz
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4.2.3. Procedure On arrival, the ex
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ecognition task, risk assessment an
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Table 4.1. Percentage of the partic
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that cognitive aspects of hazard an
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80 70 Mean percentage mentioned cov
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Table 4.3. Percentages of latent ha
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latent hazards was higher than the
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Discussion about fixated latent haz
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mentioned latent hazards, young lea
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Gaze directions and fixation durati
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4.3.3. Relationship between the two
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selection task cannot be used to te
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Underwood, Chapman et al. (2002) an
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more difficulties to detect and rec
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5. Testing hazard anticipation, an
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• The video task and the photo ta
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animation clips were made, each las
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The photo task Three experts on the
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5.2.3. Procedure Participants were
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5.2.6. Overt and covert latent haza
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The effect size was small, η 2 P =
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action selection task of Chapter 4,
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3. Effect of interruptions The inte
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5.3.3. Procedure Participants were
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The mean click score was M = 7.7 (S
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ottom-up gaze control (the tractor
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6. Simulator-based hazard anticipat
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al., 2002; Regan, Triggs, & Godley,
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esources to vehicle control (steeri
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of the University of Massachusetts
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In contrast, Ivancic & Hesketh (200
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students, whereas participants that
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for the training were based on thos
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6.2.3. Training intervention SimRAP
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A screen capture of the centre scre
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Table 6.2. (continued) critical sit
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at least sixteen of the nineteen si
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latent hazards. This is not very su
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For the control group the opposite
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The combined three near transfer si
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training program was mostly on over
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7. Discussion and conclusions 7.1.
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ehaviour could be the cause of unsa
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transport. It can also be status, a
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of this is an intervention in the a
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performance in hazard detection and
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than both other groups. It is likel
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etter scanning for latent hazards i
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hazards are a good indicator of som
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order to avoid attribution of an ex
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References Abelson, R.P. (1981). Ps
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underlying reaction time to visual
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Darby, P., Murray, W. & Raeside, R.
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Fuller, R. (2007b). Motivational de
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Irwin, D.E. (2004). Fixation locati
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Louwerens, J.W., Gloerich, A.B.M.,
Page 256 and 257: Murray, Å. (1998). The home and sc
Page 258 and 259: Roth, M. (2009). Social support as
Page 260 and 261: Ulleberg, P. (2001). Personality su
Page 262 and 263: Summary Driving most of the times,
Page 264 and 265: Deficit Hyperactivity Disorder (ADH
Page 266 and 267: framework of Brouwer & Schmidt (200
Page 268 and 269: and older learner drivers. From the
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Page 272: group than before the training and
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Page 277 and 278: status en een auto betekent ook vri
Page 279 and 280: Belangrijk is dat zowel bij zichtba
Page 281 and 282: en ervaren bestuurders (Huestegge e
Page 283 and 284: afgerond, hadden ook een significan
Page 285 and 286: om hun veiligheidsmarge te vergrote
Page 288: About the author Willem Vlakveld wa
Page 291 and 292: 4. On a rural road when driving str
Page 293 and 294: they keep on walking in the same di
Page 295 and 296: 5. The driver drivers straight on a
Page 298 and 299: Appendix 3 Additional latent hazard
Page 300 and 301: Appendix 4 Glossary of abbreviation
Page 302 and 303: economic progress and world trade.
Page 304 and 305: Appendix 5 Glossary on brain issues
Page 308 and 309: MEG Motor cortex MRI Myelination Ne
Page 310 and 311: PFC Serotonin Striatum Synaptic pru
Page 312 and 313: SWOV-Dissertatiereeks In deze reeks
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