Measuring drivers’ takeover performance in varying levels of automation: Considering the influence of cognitive secondary task

Mixed control by driver and automated system will remain in use for decades until fully automated driving is perfected. Thus, drivers must be able to accurately regain control of vehicles in a timely manner when the automated system sends a takeover request (TOR) at its limitation. Therefore, determining the factors that affect drivers’ takeover quality at varying levels of automated driving is important. Previous studies have shown that visually distracting secondary tasks impair drivers’ takeover performance and increase the subjective workload. However, the influence of purely cognitive distracting secondary tasks on drivers’ takeover performance and how this influence varies at different levels of automation are still unknown. Hence, a 5 (driving modes) × 3 (cognitive secondary tasks) factorial design with the within-subject factors was adopted for this driving simulator experiment. The sample consisted of 21 participants. The participants’ subjective workloads were recorded by the NASA-Task Load Index (NASA-TLX). Results showed that compared to manual driving conditions, the drivers’ subjective workloads were significantly reduced in both partially and highly automated driving conditions, even with a TOR, confirming the benefit of the automated driving system in terms of reducing the driving workload. Moreover, the drivers exhibited a lower takeover behavior quality at high levels of automation than manual driving in terms of increased reaction time, abnormal performance, standard deviation of lane position, lane departure probability, and reduced minimum of time to collision. However, at the highly automated driving condition, the drivers’ longitudinal driving safety and ability to follow instructions improved when performing a highly cognitive secondary task. This phenomenon possibly occurred because automated driving conditions lead to an underload phenomenon, and the execution of highly cognitive tasks transfers drivers into moderate load, which helps with the drivers’ takeover performance.     

Moved to action? Gender differences in perceived effort and motor performance after video-based achievement motive arousal

Achievement incentives in sports are assumed to trigger achievement motivation, which in turn increases performance. We used a within-subject-design to test achievement motive arousal (using an A-B-A design) using video clips. We hypothesized that an ACH-video clip arouses the achievement motive (PSE) stronger, leads to better performance in a skipping task and elicits stronger perceived effort and commitment for the task than the NEUTRAL- and NO-video conditions. We investigated gender differences. 184 students (92 women, age: M = 27.66 years, SD = 9.72) participated in a three-part web-survey. Neither main nor interaction effects of Video-Condition and Gender were found on motive arousal and skipping frequency. Significant interaction effects on skipping slope and perceived effort, however, showed that women are more engaged after the ACH-video than after the NEUTRAL-video and NO-video and here even outperformed men. Results are discussed in terms of why external “motivators” (e.g., videos) affect men and women differently.     

The Effect of Positive Emotions with Different Arousal Levels on Thought–Action Repertoires1,2

This study examined whether the induction of different states of arousal via positive emotions broadens thought–action repertoires. Sixty-two Japanese undergraduate and graduate students were randomly assigned to (a) high-arousal positive emotion, (b) low-arousal positive emotion, and (c) neutral groups, after which they watched a 3-min film clip. Participants completed the Affect Grid to confirm their mood state before and after watching the film. Following this, they completed the Twenty Statements Test, which measures thought–action repertoires. A one-way analysis of variance was conducted on the Twenty Statements Test score. The results showed that high-arousal positive emotion broadened thought–action repertoires to a greater extent than did low-arousal positive emotion and the neutral state, while low-arousal positive emotion broadened such repertoires to a greater extent than did the neutral state. We discuss the different effects of high- and low-arousal positive emotions on thought–action repertoires.     

愤怒情绪对不同类型恶意创造力表现的影响

个体的恶意创造力主要体现在伤害、欺骗与捉弄他人三方面。本研究旨在考察愤怒情绪对上述三类恶意创造力表现的影响及作用路径。研究设计了愤怒、恐惧和中性三种情绪诱发条件（后两者分别作为愤怒情绪的消极和中性情绪对照）,以考察不同情绪状态下个体在三类恶意创造力表现上的差异。结果发现,对于伤害和欺骗他人,愤怒情绪诱发组在观点流畅性、新颖性和伤害性上均高于中性情绪诱发组;而对于捉弄他人,愤怒情绪诱发组仅在观点流畅性和新颖性上高于中性情绪诱发组。内隐攻击性中介了愤怒情绪对三类恶意创造力表现的影响,而情绪唤醒度仅中介了愤怒情绪对伤害他人恶意创造力表现的影响。上述结果表明,内隐攻击性是愤怒情绪促进不同类型恶意创造力的通用路径,而情绪唤醒度是愤怒情绪促进伤害他人恶意创造力的特异路径。     

The robustness of false memory for emotional pictures

Emotional material is commonly reported to be more accurately recognised; however, there is substantial evidence of increased false alarm rates (FAR) for emotional material and several reports of stronger influences on response bias than accuracy. This pattern is more frequently reported for words than pictures. Research on the mechanisms underlying bias differences has mostly focused on word lists under short retention intervals. This article presents four series of experiments examining recognition memory for emotional pictures while varying arousal and the control over the content of the pictures at two retention intervals, and one study measuring the relatedness of the series picture sets. Under the shorter retention interval, emotion increased false alarms and reduced accuracy. Under the longer retention interval emotion increased hit rates and FAR, resulting in reduced accuracy and/or bias. At both retention intervals, the pattern of valence effects differed based on the arousal associated with the picture sets. Emotional pictures were found to be more related than neutral pictures in each set; however, the influence of relatedness alone does not provide an adequate explanation for all emotional differences. The results demonstrate substantial emotional differences in picture recognition that vary based on valence, arousal and retention interval.     

Alexithymia is associated with an augmenter profile, but not only: Evidence for anticipation to arousing music

Grynberg, D., Davydov, D. M., Vermeulen, N. & Luminet, O. (2012). Alexithymia is associated with an augmenter profile, but not only: Evidence for anticipation to arousing music. Scandinavian Journal of Psychology 53, 375-381. It has been suggested that high alexithymia scorers have an 'augmenter' profile which amplifies their physiological and subjective responses to highly arousing stimuli. The aim of this study was to test this theory using several physiological measures. Participants listened to musical excerpts either in a 'weak-to-strong' or a 'strong-to-weak' order of arousing levels of stimuli. The results show that alexithymia was associated with an augmenter profile for subjective reports for the most arousing stimulus and with stronger skin conductance level responses in the 'strong-to-weak' order. These results partially support the augmenter profile and reveal that alexithymia may be associated with higher anticipation for the most arousing excerpt.     

A descriptive study of emotion concepts using dimensional models of core affect / Un estudio descriptivo de los conceptos emocionales desde los modelos dimensionales de los estados afectivos

Abstract

The study of emotions from a dimensional perspective has allowed for important steps towards the understanding of human emotional experiences. However, there are still many questions to be addressed. One, of special relevance, refers to which emotion concepts we use to refer to different emotional experiences. Thus, the primary purpose of this research was to identify which emotion concepts we use in our daily life to refer to eight specific core affects identified by the combination of valance (positive and negative), arousal (activated and deactivated) and time perspective (anticipatory and retrospective). Further, we focused on the degree of specificity of those emotion concepts and whether the levels of specificity vary among different core affects. Our results evidenced that the specificity and breadth of our emotional vocabulary varies between different core affects.     

Delayed reconfiguration of a non-emotional task set through reactivation of an emotional task set in task switching: an ageing study

ABSTRACT

In our everyday life, we frequently switch between different tasks, a faculty that changes with age. However, it is still not understood how emotion impacts on age-related changes in task switching. Using faces with emotional and neutral expressions, Experiment 1 investigated younger (n?=?29; 18–38 years old) and older adults’ (n?=?32; 61–80 years old) ability to switch between an emotional and a non-emotional task (i.e. responding to the face's expression vs. age). In Experiment 2, younger and older adults also viewed emotional and neutral faces, but switched between two non-emotional tasks (i.e. responding to the face's age vs. gender). Data from Experiment 1 demonstrated that switching from an emotional to a non-emotional task was slower when the expression of the new face was emotional rather than neutral. This impairment was observed in both age groups. In contrast, Experiment 2 revealed that neither younger nor older adults were affected by block-wise irrelevant emotion when switching between two non-emotional tasks. Overall, the findings suggest that task-irrelevant emotion can impair task switching through reactivation of the competing emotional task set. They also suggest that this effect and the ability to shield task-switching performance from block-wise irrelevant emotion are preserved in ageing.     

金钱竞拍任务上的风险偏好:自尊水平和性别的作用

基于金钱-自尊交换理论,针对以往研究遗留的问题,本研究采用改编自著名的1美元竞拍游戏的实验任务,通过两个实验探索了自尊水平、竞拍者性别和竞拍对手性别对金钱竞拍中风险偏好的影响。结果表明:(1)自尊水平对金钱竞拍中的风险偏好有显著影响,中等水平自尊者表现出较高的风险偏好;(2)竞拍者性别的主效应及其与自尊水平的交互作用均不显著;(3)竞拍对手性别的主效应不显著,而与自尊水平及竞拍者性别之间的交互作用显著。依据相关的文献对上述发现进行了分析和讨论。