Infant state in relation to its environmental context

Two neonatal intensive care units (NICU) were observed every 15 minutes for at least 72 consecutive hours. Although infants on both NICUs were exposed to considerable amounts of stimulation, there were differences between the units for each environmental measure in the amount of stimulation and/or the pattern of circadian periodicity. The two NICUs also differed in the amount of time infants spent in various states and in the pattern of state periodicity. In general, the diurnal rhythms of the infant states were associated with the diurnal rhythms of different environmental events; furthermore, the patterns of association were not the same on the two NICUs. The results point to potential problems in depicting a “typical” NICU. More importantly, they suggest that the environmental of NICUs has a recognizable influence on aspects of their inhabitants' behavior and that the nature of influence is different from NICU to NICU. The effects are potentially significant for physical, social, and cognitive development.     

Numeracy in the jury box: Numerical ability,meaningful anchors,and damage award decision making

This project employs an experimental design to test theoretical predictions regarding how numeracy can assist jurors in determining damage awards to compensate a plaintiff for pain and suffering and how the use of meaningful numerical anchors may produce similar benefits. Mock jurors (N = 345) reviewed a legal case and were asked to give a dollar award to compensate the plaintiff for pain and suffering. The presence and nature of a numerical anchor and the duration of pain and suffering were manipulated. Participants' numeracy was measured. Results provided support for predictions. Jurors higher in numeracy gave awards that more appropriately reflected the duration of pain and suffering and showed less variability in awards. Similar benefits were obtained by exposing jurors to meaningful numerical anchors to help them contextualize dollar amounts. Thus, introducing meaningful anchors to jurors may provide similar benefits to numeracy, without the drawbacks associated with selecting only numerate jurors.     

Effect of conducting behavioral observations and ratings on staff implementation of a paired-stimulus preference assessment

We assessed the effects of trainees observing and rating the accuracy of others implementing a paired-stimulus preference assessment from video on the trainees' subsequent implementation accuracy. These observational experiences increased implementation accuracy with both a confederate and an actual consumer. These results suggest conducting observations and accuracy ratings may prepare staff to implement behavioral procedures without need of a dedicated trainer.     

The Power to Detect and Predict Individual Differences in Intra-Individual Variability Using the Mixed-Effects Location-Scale Model

Our goal is to provide empirical scientists with practical tools and advice with which to test hypotheses related to individual differences in intra-individual variability using the mixed-effects location-scale model. To that end, we evaluate Type I error rates and power to detect and predict individual differences in intra-individual variability using this model and provide empirically-based guidelines for building scale models that include random and/or systematically-varying fixed effects. We also provide two power simulation programs that allow researchers to conduct a priori empirical power analyses. Our results aligned with statistical power theory, in that, greater power was observed for designs with more individuals, more repeated occasions, greater proportions of variance available to be explained, and larger effect sizes. In addition, our results indicated that Type I error rates were acceptable in situations when individual differences in intra-individual variability were not initially detectable as well as when the scale-model individual-level predictor explained all initially detectable individual differences in intra-individual variability. We conclude our paper by providing study design and model building advice for those interested in using the mixed-effects location-scale model in practice.     

Examining Transfer Effects of Dual-Task Training Protocols for a Complex Locomotor Task

Training protocols designed to improve dual-task performance of an obstacle crossing and auditory Stroop task (OBS+Stroop) were tested. In Experiment 1, following baseline collection of OBS+Stroop trials, proximally related walking training was performed, and participants were then retested on the OBS+Stroop test. After training, participants adopted a more cautious obstacle crossing strategy, indicating a potentially safer navigation strategy. Transfer effects from distally related training were then examined (Experiment 2); a computer game training paradigm was examined using the same testing protocol as Experiment 1. Computer training demonstrated improved dual-task performance on some measures, but did not induce a more cautious stepping strategy. Results indicate that dual-task training needs to be similar to targeted tasks to yield reliable, positive training outcomes.     

道德判断中的框架效应:一个新的视角

道德领域亦存在框架效应,但有关这类偏差的研究仍然存在不足。研究以600名大学生为对象,以亚洲疾病和工厂风波两类经典情境为实验情境,设置正面和负面两类属性框架,以研究道德判断的框架效应。结果发现,在面临道德判断情境时,在正面框架下被试倾向于选择确定性方案,而在负面框架下被试倾向于选择风险性方案; 在正面框架下被试倾向于评价风险性方案更违背道德,在负面框架下则认为确定性方案更违背道德; 被试对情境中人物选择确定性或风险性方案道德之可谴责性评价与确定性或风险性方案本身之道德违背性评价的判断并不一致:在正面框架下,若情境中人物选择风险性方案,被试认为其行为更应受到谴责; 但在负面框架下,被试对情境中人物选择确定性方案和风险性方案在道德上应受谴责性的评价并无显著差异。研究还发现道德判断框架效应存在性别差异,负面框架下女生更为风险寻求。     

Workplace Bullying and Burnout: The Moderating Effects of Social Support

This study aims to investigate the moderating effects of social support on the link between workplace bullying and burnout. This correlational study includes 222 employees recruited from various industry sectors. Participants completed the Revised Negative Acts Questionnaire, the Maslach Burnout Inventory, and the Social Support Scale. Colleague and supervisor support moderated the relationship between both work- and person-related bullying with burnout, whereas family and senior management support moderated the links between burnout and person-related and physically intimidating bullying, respectively. High levels of emotional support were associated with greater emotional exhaustion in work-related and overall bullying. Different forms of social support moderated the links between different forms of workplace bullying and different components of burnout. The present findings may inform anti-bullying prevention programs and interventions supporting bullying victims.     

Risk compensation theory and bicycle helmets – Results from an experiment of cycling speed and short-term effects of habituation

It has been suggested that the safety benefits of bicycle helmets are limited by risk compensation. The current study contributes to explaining whether the potential safety effects of bicycle helmets are reduced by cyclists’ tendency to cycle faster when wearing them (as a result of risk compensation), and if this potential reduction can be associated with a change in perceived risk. A previous study (Fyhri & Phillips, 2013) showed that non-routine helmet users did not increase their speed immediately after being given a helmet to wear, while routine helmet users cycled more slowly. The current study tests whether the previously found reduction in speed in response to helmet removal – as an indirect indicator of risk compensation – could be established in non-routine helmet users, after a period of habituation while cycling with a helmet.We did this by conducting a randomized crossover trial, in which we used GPS-derived speed calculations and self-reported risk perception. To test the effect of habituation, we used a design where each participant took part in two rounds with a break between and each round having two trips. We collected the data in June 2015. Non-routine helmet users (N = 31) were recruited in the field (along cycle routes in Oslo), and through a sample drawn from the Falck National register of bicycle owners. In the first phase of the study, all participants were asked to complete a test route (2.4 km downhill) with and without a helmet. In the second phase of the experiment, conducted after 1.5–2 h, the same participants again completed the test route with and without a helmet. In the time between the first and second phases of the experiment, all participants were given helmets, and told to use them on a predefined bicycle route.Habituation to the helmet between the first and second phases of the experiment did not produce any decrease (with helmet removal) in speed, on top of the habituation that occurred while cycling down the hill (the order effect). Mean speed difference for cycling with/without a helmet before the break was −0.76 km/h, after the break this difference was 0.32 km/h; 95% CIs [−0.5, 2.9] and [−0.9, 1.5]. We argue that risk compensation is an unlikely effect of using a bicycle helmet, and probably cannot explain any adverse effects related to helmet legislation.     

Effect of achievement motivation on cognitive control adaptations

Previous research addressing motivational effects on cognitive control adaptations primarily manipulated external rewards. In the present study, we examined whether achievement motivation, reflecting intrinsic motivation, modulates cognitive control adaptations. In each of two experiments, students were divided into a high achievement motivation group (HAM; Experiment 1: N?=?36; Experiment 2: N?=?39) and a low achievement motivation group (LAM; Experiment 1: N?=?30; Experiment 2: N?=?39) on the basis of the Achievement Motivation Scale. Cognitive control adaptations were assessed by sequential congruency effects (SCEs) in Flanker tasks. Using a standard Flanker task in Experiment 1 and examining response times, the HAM but not LAM participants showed evidence of cognitive control adaptations. Because SCEs in a standard Flanker task may reflect lower-level, bottom-up processes rather than cognitive control adaptations, we used an adapted version of the Flanker task in Experiment 2 that controlled for the potential influence of such processes. Experiment 2 again revealed evidence of SCEs in the HAM but not LAM participants. These results suggest that cognitive control adaptions may be modulated by achievement motivation. Such potential modulation could be taken into account when evaluating results of previous and future fundamental and applied studies on cognitive control adaptations.     

The role of multiple-choice tests in increasing access to difficult-to-retrieve information

Answering multiple-choice questions improves access to otherwise difficult-to-retrieve knowledge tested by those questions. Here, I examine whether multiple-choice questions can also improve accessibility to related knowledge that is not explicitly tested. In two experiments, participants first answered challenging general knowledge (trivia) multiple-choice questions containing competitive incorrect alternatives and then took a final cued-recall test with those previously tested questions and new related questions for which a previously incorrect answer was the correct answer. In Experiment 1, participants correctly answered related questions more often and faster when they had taken a multiple-choice test than when they had not. In Experiment 2, I showed that the more accurate and faster responses were not simply a result of previous exposure to those alternatives. These findings have practical implications for potential benefits of multiple-choice testing and implications for the processes that occur when individuals answer multiple-choice questions.