Post-traumatic stress symptoms and post-traumatic growth in children and adolescents 12 months and 24 months after the earthquake and tsunamis in Chile in 2010: A longitudinal study

On 27 February 2010, Chile experienced one of the strongest earthquakes in recorded history. The study aimed to evaluate post-traumatic stress symptoms (PTSS) and post-traumatic growth (PTG) in children and adolescents 12 months (T1) and 24 months (T2) after the earthquake and tsunamis in Chile in 2010. Three hundred twenty-five children and adolescents (47.4% girls; 52.6% boys) between the ages of 10 and 16 years participated in the study. The instruments included the Revised Post-traumatic Growth Inventory for Children by Kilmer et al., the Childhood PTSD Scale by Foa et al. and the Rumination Scale for Children by Cryder et al., as well as a scale to assess the severity of the event and a sociodemographic questionnaire. The PTSS and PTG scores decreased at T2. In addition, the main predictors of PTSS and PTG were disruptive experiences, losses after the event and intrusive and deliberate rumination during the previous year. These results enhance understanding of factors related to PTG, improve the ability to predict PTSS and PTG in children and adolescents following natural disasters, and inform the design of intervention strategies to promote better mental health in those affected.     

Bypassing the gatekeeper: incidental negative cues stimulate choices with negative outcomes

The Theory of Event Coding (TEC) predicts that exposure to affective cues can automatically trigger affectively congruent behaviour due to shared representational codes. An intriguing hypothesis from this theory is that exposure to aversive cues can automatically trigger actions that have previously been learned to result in aversive outcomes. Previous work has indeed found such a compatibility effect on reaction times in forced-choice tasks, but not for action selection in free-choice tasks. Failure to observe this compatibility effect for aversive cues in free choice tasks suggests that control processes aimed at directing behaviour toward positive outcomes may overrule the automatic activation of affectively congruent responses in case of aversive cues. The present study tested whether minimising such control could cause selection of actions that have been learned to result in aversive outcomes. Results showed incidental exposure to aversive cues biased selection of behaviours with learned aversive outcomes over behaviours with positive outcomes, despite a preference to execute the positive- over the negative-outcome actions evidenced by a separate behaviour measurement and self-reports. These results suggest motivational processes to select actions with positive consequences may sometimes be bypassed.

Data and Materials: http://doi.org/10.17605/osf.io/ym7qu     

Lights,camera, action: the role of editing and framing on the processing of filmed events

ABSTRACT

Filmmakers use various cinematic techniques in an effort to guide attention to certain aspects of these events. The present study was conducted to investigate how framing and editing can guide viewers’ attention toward character actions during event segmentation. Participants watched and segmented a movie that simultaneously showed two actors engaged in two related activities. Participants watched one of three versions of the movie: Static center version that did not foreground any character; Static off-center version that foregrounding one of the characters, and an edited version with a mix of shots that foregrounding both characters. Participants engaged in an event partonomy task in which they were asked to identify the boundaries between the events that were depicted in the movie. After watching the movie, they were asked to recall the events. The results showed converging evidence between the event segmentation and recall data, which both indicated that cinematic devices affect the perception and memory of the event structure depicted in the film.     

Electrophysiological modulations of exogenous attention by intervening events

The present study used event related potentials (ERPs) in a spatial cueing procedure to investigate the stages of processing influenced by intervening events presented between cues and targets, when they produce maximal behavioural modulations (i.e., facilitation in the absence of the intervening event, and inhibition of return – IOR, when the intervening event is presented). Our data challenge the traditional orienting–reorienting hypothesis, leading to alternative explanations of cueing effects that are beyond the orienting of attention. Peripheral cues always produced a detection cost (reflected in a reduced amplitude of the P100 component for cued as compared to uncued trials), independently on the behavioural effect that was measured. In contrast, facilitation was associated to modulations of later-stage components, such as N100, Nd, and P300. The N2pc component, usually associated to spatial selection, was the only component reflecting opposite and significant modulations associated to the behavioural effect. The present results suggest that facilitation and IOR can arise from changes at different stages of processing. We propose that the perceptual detection cost (reflected on the P100), and the hindered spatial selection (reflected on the N2pc) at the cued location determine the IOR effect at least in discrimination tasks, while the contribution of the later-stage components, beside attentional processes, determines other facilitatory effects of cueing, which altogether determine the behavioural effect that is measured.     

The role of goals and goal barriers in predicting the outcomes of intentional actions in the contexts of narrative text

ABSTRACT

Predictions about human behaviour can be influenced by the presence and status of goals. The purpose of this study was to assess the impact of an active goal and barriers to that goal on predictions about outcomes experienced by agents. Participants read stories describing characters with goals. The extent that there were barriers to those goals was varied. Participants predicted what happens next in the story, both prior to and after barrier removal. There was support for a goal barrier hypothesis, where the conditions for predicting goal completion involved removing conditions that prevent a goal being achieved (Experiments 1 and 2). At the same time, unachieved goals were more accessible to working memory than completed goals, regardless of a barrier (Experiment 3). These results suggest that participants deliberately decided when it was appropriate to use goal information to predict outcomes of intentional actions conducted by the agents in the stories.