Hardiness and mental health during naval deployment: The relation is mediated by social processes and not by self-regulatory processes

IntroductionThe aim of the present study was to investigate the mediating effects of cohesion and self-efficacy on the relation between hardiness and symptoms of anxiety and depression during naval international operations.Objective and methodIt was hypothesized that an indirect effect of both cohesion and operational self-efficacy would emerge even when controlling for pre-deployment measures of symptoms.ResultsThe results revealed a strong indirect effect of cohesion on the relationship between hardiness and scores on Hopkins Symptom Checklist – 25 items. The effect was evident for the total score and the dimensions of anxiety as well as depression. No effect was found for operational self-efficacy.ConclusionIt was concluded that the social process of cohesion outperforms the self-regulatory process of operational self-efficacy as a mediator between hardiness and mental health. Greater focus on developing crew cohesion may thus be important for maintaining mental health under stressful conditions.     

Harbour seals (<Emphasis Type="Italic">Phoca vitulina</Emphasis>) can steer by the stars

Offshore orientation in marine mammals is still a mystery. For visual orientation during night-time foraging and travelling in the open seas, seals cannot rely on distant terrestrial landmarks, and thus might use celestial cues as repeatedly shown for nocturnally migrating birds. Although seals detect enough stars to probably allow for astronavigation, it was unclear whether they can orient by the night sky. The widely accepted cognitive mechanism for bird night-time orientation by celestial cues is a time-independent star compass with learned geometrical star configurations used to pinpoint north as the rotational centre of the starry sky while there is no conclusive evidence for a time-compensated star compass or true star navigation. Here, we present results for two harbour seals orienting in a custom made swimming planetarium. Both seals learned to highly accurately identify a lodestar out of a pseudo-randomly oriented, realistic projection of the northern hemisphere night sky. Providing the first evidence for star orientation capability in a marine mammal, our seals’ outstanding directional precision would allow them to steer by following lodestars of learned star courses, a celestial orientation mechanism that has been known to be used by Polynesian navigators but has not been considered for animals yet.     

The use of experimenter-given cues by South African fur seals (<Emphasis Type="Italic">Arctocephalus pusillus</Emphasis>)

Dogs can use a variety of experimenter-given cues such as pointing, head direction, and eye direction to locate food hidden under one of several containers. Some authors have proposed that this is a result of the domestication process. In this study we tested four captive fur seals in a two alternative object choice task in which subjects had to use one of the following experimenter-given cues to locate the food: (1) the experimenter pointed and gazed at one of the objects, (2) the experimenter pointed at only one of the objects, (3) the experimenter gazed at only one of the objects, (4) the experimenter glanced at only one of the objects, (5) the experimenter pointed and gazed at one of the objects but was sitting closer to one object than to the other, (6) the experimenter pointed only with the index finger at one of the objects, (7) the experimenter presented a replica of one of the objects. The fur seals were able to use cues which involved a fully exposed arm or a head direction, but failed to use glance only, the index finger pointing and the object replica cues. The results showed that a domestication process was not necessary to develop receptive skills to cues given by an experimenter. Instead, we hypothesize that close interactions with humans prior to testing enabled fur seals to use some gestural cues without formal training. We also analyzed the behavior of the seals depending on the level of difficulty of the task. Behavioral signs of hesitation increased with task difficulty. This suggests that the fur seals were sensitive to task difficulty.     

Hommes et aléas : appréhension des risques côtiers par des usagers et des gestionnaires de communes littorales

This study focuses on how users and managers living in coastal areas represent their living environment and how the coastal risks (erosion and flooding) are included in this place representation. To do this, a qualitative survey (semi-structured interviews) was conducted with 61 people who live in towns so-called “at risky” or “vulnerable” in relation to this issue. The interviews were fully transcribed and they have been analyzed by the Alceste textual analysis software, supplemented by a manual content analysis. For all respondents, the results highlight that coastal risks are not a major concern. For managers, the risk is taken into account but it is not usually the priority. For users, the privilege of the surrounding and the place attachment obscure the existence of risk, whatever it is.