Increasing seatbelt usage in logging skidders through behaviour modification and seatbelt design : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Psychology at Massey University

This study examined methods for increasing seatbelt usage in one type of heavy logging machine (the skidder). This machine is used extensively for extracting felled trees and transporting them from where they are cut down to a central processing area. Preliminary investigations suggested that the operators of these machines failed to wear their seatbelts because they were poorly designed and because the operators simply forgot. A survey of the literature on increasing safety behaviours found that the two most powerful techniques were behaviour modification and human factors engineering (or ergonomics). Therefore, these were the two techniques used here. The standard seatbelts were redesigned to make them easier to use and an orange flashing reminder light was installed into the machines of seven full-time skidder operators. These machines were operating in either Kaingaroa, Rotoehu, Tahorakuri or Te Whakao Forests in the central North Island of New Zealand. The experiment used a multiple baseline single subject design, with the subjects receiving each treatment twice. With the installation of the redesigned seatbelt, mean seatbelt usage for six subjects rose from 21% to 31%. One subject refused to wear a seatbelt throughout the experiment. Installing the reminder light increased seatbelt usage by a further 1%. Removing the new seatbelt design caused usage to drop 16%. A further decrease of 5% occurred with the return to baseline phase when the reminder light had also been removed. The second introduction of the new seatbelt resulted in an increase in usage from 10% to a mean level of 46%. This was increased a further 22% with the reintroduction of the reminder light. The results showed that an easier to use seatbelt in combination with a reminder light can increase the level of seatbelt usage. The results also provide further evidence of the power of both behaviour modification techniques and human factors engineering in the field of occupational safety

Driving distractions: an insight gained from roadside interviews on their prevalence and factors associated with driver distraction

The present research investigated the proportion of drivers that engage in a wide range of observable and unobservable driving distractions, along with a number of variables associated with driver distraction. A total of 426 semi-structured interviews were performed, with the results weighed according to the proportion of driver licences among city residents of each gender and age group (18–24, 25–44, 45–64, and 65+). Drivers were most inclined to think about phone-related activities when asked about driving distractions, although the vast majority also recognised that a wide variety of other activities can be regarded as distractions. Drivers were aware of the ban on handheld mobile phone activities, but their knowledge of the law was less accurate in relation to other illegal activities, such as manipulating a SatNav while driving. Almost 90% of participants reported engaging in distractions while driving, such as: looking at something outside the vehicle, thinking about things unrelated to the driving task and manipulating the audio entertainment system. The figures for text messaging, having a handheld or hands-free conversation were also relatively high (43.7%, 32.2%, and 25.4%, respectively). Texting while driving was perceived to be the most dangerous secondary activity, followed by having a handheld conversation, with significant differences between distractions. Further, hands-free conversations were perceived to be significantly less risky than handheld conversations. Perceived descriptive norms consistently predicted engagement in all distraction types. The results show that drivers are well aware that secondary activities can be distracting and are risky, and yet a substantial proportion of drivers reported engaging in a wide variety of distractions while driving

Factors Influencing the Effective Life of Chainsaw Protective Legwear

In 1983, chainsaw cuts to the leg accounted for 29% of all reported lost time accidents in the New Zealand logging industry. The introduction of protective legwear reduced this figure to 8% in 1986. Since this time chainsaw cuts to the leg have continued to account for more than 5% of all injuries. There were several possible explanations for this failure to eliminate chainsaw cuts to the leg, including the deterioration of the protective legwear over time. Therefore, two research projects were established. The first attempted to find out how long the legwear was able to protect the user at the level required by the New Zealand Standard. This research found that the legwear failed after 6 months use by loggers working in New Zealand plantation forests. The second project was established to determine which factors caused the deterioration of the legwear's protective properties. This project found that exposure to even small quantities of oil resulted in the legwear comprehensively failing the New Zealand Standards test

Advances in Driving Anger

Driving anger is the most widely studied emotion in the driving context and one of the more commonly studied topics in traffic and transportation psychology. Anger has a substantial impact on driving behaviour and is both a cause and a consequence of numerous negative driving outcomes. Over the years, what we have come to know about driving anger has developed in proportion to the increase in quality of research dedicated to this topic. The idea behind this special issue is to provide a forum in which to better understand driving anger: to highlight what has been learned about driving anger over the past quarter century and to stimulate new research for the next decade

Gender roles, sex and the expression of driving anger

The present study investigated the validity of the 25-item Driving Anger Expression Inventory (DAX) as well as the role of sex and gender-roles in relation to the expression of driving anger in a sample of 378 French drivers (males = 38%, M = 32.9 years old). Confirmatory Factor Analysis supported the four-factor structure of the 25-item DAX (Adaptive/Constructive Expression; Use of the Vehicle to Express Anger; Verbal Aggressive Expression and Personal Physical Aggressive Expression) and two of the three aggressive factors were found to have significant positive relationships with driving anger, while adaptive/constructive expression was negatively related to driving anger. Use of the vehicle to express anger was not significantly related to crash involvement, but was significantly related to all other crash-related conditions (traffic tickets, loss of concentration, loss of control of the vehicle, near crash). The presence of feminine traits, but not sex, was predictive of adaptive/constructive behaviours, while masculine traits predicted more frequent verbal aggressive expression, use of the vehicle to express anger, personal physical aggressive expression and total aggressive expression. This finding may account for the inconsistent relationship found between driving anger and sex in previous research. This research also found that the 25-item DAX is a valid tool to measure the expression of driving anger and that the endorsement of masculine traits are related to more aggressive forms of driving anger expression

Gender roles, sex and the expression of driving anger

The present study investigated the validity of the 25-item Driving Anger Expression Inventory (DAX) as well as the role of sex and gender-roles in relation to the expression of driving anger in a sample of 378 French drivers (males = 38%, M = 32.9 years old). Confirmatory Factor Analysis supported the four-factor structure of the 25-item DAX (Adaptive/Constructive Expression; Use of the Vehicle to Express Anger; Verbal Aggressive Expression and Personal Physical Aggressive Expression) and two of the three aggressive factors were found to have significant positive relationships with driving anger, while adaptive/constructive expression was negatively related to driving anger. Use of the vehicle to express anger was not significantly related to crash involvement, but was significantly related to all other crash-related conditions (traffic tickets, loss of concentration, loss of control of the vehicle, near crash). The presence of feminine traits, but not sex, was predictive of adaptive/constructive behaviours, while masculine traits predicted more frequent verbal aggressive expression, use of the vehicle to express anger, personal physical aggressive expression and total aggressive expression. This finding may account for the inconsistent relationship found between driving anger and sex in previous research. This research also found that the 25-item DAX is a valid tool to measure the expression of driving anger and that the endorsement of masculine traits are related to more aggressive forms of driving anger expression

Gender roles and the expression of driving anger among Ukrainian drivers

The current study investigated the validity of the revised (25-item) version of the driving anger expression inventory (DAX) on a novel sample of 385 drivers from Ukraine. The roles of sex and gender in relation to self-reported aggressive tendencies were also examined. Confirmatory factor analysis supported the four-factor structure of the DAX (adaptive/constructive expression; use of the vehicle to express anger; verbal aggressive expression; and personal physical aggressive expression), and the three aggressive factors were found to have positive relationships with trait anger and driving anger, while adaptive/constructive expression was negatively related to trait and driving anger. Drivers who reported recent near-misses or loss of concentration scored higher on verbal aggressive expression. Those who had recently received a traffic ticket also reported higher levels of all three types of aggressive anger expression. Further, the presence of feminine traits, but not sex, predicted more adaptive/constructive behaviors and lower scores for verbal aggressive expression, personal physical aggressive expression, and total aggressive expression. However, masculine traits did not predict any of these factors. This research concludes that the revised DAX is a valid tool to measure the expression of driving anger and that the endorsement of feminine traits is related to less aggressive expression of driving anger

Transport company safety climate - the impact on truck driver behaviour and crash involvement

Objective: The present study investigated the relationships between safety climate and driving behavior and crash involvement. Methods: A total of 339 company-employed truck drivers completed a questionnaire that measured their perceptions of safety climate, crash record, speed choice, and aberrant driving behaviors (errors, lapses, and violations). Results: Although there was no direct relationship between the drivers' perceptions of safety climate and crash involvement, safety climate was a significant predictor of engagement in risky driving behaviors, which were in turn predictive of crash involvement. Conclusions: This research shows that safety climate may offer an important starting point for interventions aimed at reducing risky driving behavior and thus fewer vehicle collisions

Difficulties in emotion regulation and risky driving among Lithuanian drivers

Background: Risky driving is a common cause of traffic accidents and injuries. However, there is no clear evidence of how difficulties in emotion regulation contribute to risky driving behavior, particularly in small post-Soviet countries. The present study aimed to investigate the relationship between difficulties in emotion regulation and self-reported risky driving behavior in a sample of Lithuanian drivers. Methods: A total of 246 nonprofessional Lithuanian drivers participated in a cross-sectional survey. Difficulties in emotion regulation were assessed using the Difficulties in Emotion Regulation Scale (DERS; Gratz and Roemer 2004), and risky driving behavior was assessed using the Manchester Driver Behaviour Questionnaire (DBQ; Lajunen et al. 2004). Results: Males scored higher than females in aggressive violations and ordinary violations. Females scored higher for the nonacceptance of emotional responses, whereas males had more difficulties with emotional awareness than females. More difficulties in emotion regulation were positively correlated with driving errors, lapses, aggressive violations, and ordinary violations for both males and females. Structural equation modeling showed that difficulties in emotion regulation explained aggressive and ordinary violations more clearly than lapses and errors. When controlling for interactions among the distinct regulation difficulties, difficulties with impulse control and difficulties engaging in goal-directed behavior predicted risky driving. Furthermore, nonacceptance of emotional responses and limited access to emotion regulation strategies were related to less violations and more driving errors. Conclusion: Emotion regulation difficulties were associated with the self-reported risky driving behaviors of Lithuanian drivers. This provides useful hints for improving driver training programs in order to prevent traffic injuries

The relationship between religion and risky behaviors among Iranian university students

One factor that protects an individual from risky behavior is religiosity, which is referred to as a shield against risky behaviors. Belief in God and religion plays an important role in young people’s lives, and in comparison with their non-religious peers. They engage less frequently in risky behaviors, such as violence and sexual relations. The present study investigated the relationship between religiosity and engagement in risky behaviors among students from the Pishva branch of the Islamic Azad University, Tehran Province in Iran. This is a descriptive, analytic cross-sectional study. The sample was comprised of 448 students from different degree majors attending the University. Participants completed two questionnaires, including the Risk-Taking Scale and Duke University Religion Index. The data analyses used one-way ANOVAs and Pearson’s correlations. This study found that students who engaged more often in organized religious activities and had higher intrinsic religiosity were less likely to engage in risky behaviors such as sexual risk taking, careless driving, violence, smoking, along with alcohol and drug abuse. Participants with higher involvement in private religious activities reported lower tendencies for the above-mentioned risky behaviors, except sexual risk taking. The findings of this study indicate that the different dimensions of religiousness are related to students’ tendency to avoid risky behavior. Thus, it appears that religion may have a role to play in preventing risky taking behavior in Iran