The Sharing Dilemma: Joining Cooperative Groups and Sharing Resources as a Means of Coping with Environmental Risk

The “social insurance” hypothesis posits that individuals join cooperative groups and share resources in order to reduce environmental risk. Despite its significance for explaining cooperative groups' formation, in small‐scale and in developing societies, the hypothesis has been subjected to little experimental testing. The present research is designed to examine the relative weight of the motivation for social insurance compared with other psychological motivations for sharing risk. We conducted two studies to test the tendency to share risk under different risk conditions and for groups of different sizes. A third experiment extends the risk‐sharing research to situations involving losses instead of gains. The findings of the first two studies lend strong support to the risk‐sharing hypothesis in the gain domain. For the loss domain, the results of the third experiment demonstrate an intriguing shift from strong reluctance to join groups under lower risk, to ubiquitous readiness to join groups under higher risk. We discuss these results in light of prospect theory and decisions from experience. Copyright © 2014 John Wiley & Sons, Ltd.     

Two of a Kind? Leader–Member Exchange and Organizational Citizenship Behaviors:The Moderating Role of Leader–Member Similarity

This study investigates the role of similarity in ethnic origin between supervisor and employee as a potential moderator between subordinates' leader–member exchange (LMX) and organizational citizenship behavior (OCB). The results support the interaction effect of supervisor–subordinate ethnic differences with LMX and OCB. As hypothesized, OCB was positively related to LMX for both ethnically similar and dissimilar dyads, but the relationship was strongest for similar dyads.     

Caring,Gender Role Orientation,and Volunteering

The current studies were conducted to examine two questions regarding the development of an ethic of care versus an ethic of justice, where the former is associated with being female and the latter is associated with being male. First, does gender role orientation in adolescence predict the ethical orientation one adopts better than gender itself does? Second, does adolescents' ethical orientation predict their volunteering behavior? To answer these questions, two studies were conducted. In Study 1, adolescents completed Bem's Sex Role Inventory (BSRI) and Jensen's World View Questionnaire (WVQ) which assesses ethical orientation. Girls and individuals high in femininity were higher on the ethic of care than were boys and individuals high in masculinity. In addition, individuals with a feminine gender orientation received higher care scores than individuals with an androgynous orientation. Regression analyses indicated that gender orientation accounted for more of the variance in the ethic of care than did gender. In Study 2, older adolescents completed Jensen's WVQ and were subsequently asked to volunteer in one of two settings: a personal setting or an impersonal setting. Individuals high in the ethic of care were more likely to volunteer and volunteered for more hours, but volunteered equally often in the two types of settings. Individuals who “apologized” for being unable to volunteer were higher on caring. The results are discussed in the context of Gilligan's theory of socialization to morality.

     

“It’s all in their head”: hierarchical exploration of a three-dimensional layered pyramid in rats

Animal Cognition - Wayfinding in a three-dimensional (3D) environment is intricate, and surface-bounded animals may overcome this complexity by breaking it down into horizontal layers along with...     

Posttraumatic play in young children exposed to terrorism: An empirical study

The phenomenon of “posttraumatic play” (PTP) has received much clinical recognition and little empirical support. The objective of this study was to examine various aspects of PTP in young children exposed to terror events and their relation to posttraumatic stress disorder (PTSD). Individual play sessions, conducted with 29 young Israeli children directly exposed to terrorism (M age = 5.47, SD = 1.34) and 25 matched unexposed children (M age = 5.62, SD = 0.87), were coded using the Children's Play Therapy Instrument–Adaptation for Terror Research (CPTI‐ATR; S.E. Chazan & E. Cohen, 2003). Analyses using these ratings showed (a) significant differences between the two groups, (b) significant associations with the caregiver's reports on child's exposure, and (c) significant associations with the caregiver's reports on the child's PTSD symptoms. Play activity ratings of predominant negative affects, frequent acting‐out/morbid themes, lowered developmental level, and reduced awareness of the child of him‐ or herself as a player significantly predicted more PTSD symptoms. PTP which included more coping strategies classified as “overwhelmed reexperiencing” and less “reenactment with soothing” was associated with a higher level of PTSD. Play analysis with the CPTI‐ATR may be helpful in identifying PTSD in children and also guide the selection of therapeutic techniques.     

Earliest memories in Israeli kibbutz upbringing: it is parental engagement that makes a difference

Culture and parenting shape the ability to recall early childhood experiences. This research focused on the unique context of upbringing in the Israeli kibbutz and examined how cultural orientation and experiences of parental engagement in Kibbutz and non-Kibbutz settings shaped adults’ earliest memories. Participants were 108 women (study 1) and 75 women and men (study 2) who were raised in traditional kibbutz upbringing or in a non-kibbutz family setting. In addition to reporting their earliest memory and age at earliest memory, participants estimated retrospectively the amount of daily time spent in interaction with parents, caregivers, and other children during the time of earliest memory. Overall, upbringing-related variations in cultural orientation were evident in the content of memories. A prediction of later age at earliest memory due to limited opportunities for parent–child interaction characteristic of traditional kibbutz upbringing was not supported. Rather, in both studies, age at earliest memory was linked to retrospective estimation of parental engagement, after controlling for childhood ecology. Study 2 revealed also a link of age at earliest memory to retrospective estimation of involvement with non-parental caregivers. These findings are congruent with the social-interaction model’s claims about the importance of interaction with caregiving adults to autobiographical memory’s development.     

Effects of sentential context on the processing of unambiguous words by the two cerebral hemispheres

The effect of sentence context on the processing of different aspects of meaning of unambiguous nouns by the two cerebral hemispheres was examined. Participants performed a lexical decision task on target words following two primes, an unambiguous noun preceded by an incomplete sentence. Priming sentences were consistent with either the dominant or the subordinate aspect of meaning of their final unambiguous word. Short and long SOAs were used. A principal finding of this study was that, when compared to unrelated aspects of meaning, for both the short and the long SOAs, the dominant and subordinate aspects of meaning of the unambiguous words were activated regardless of context in both hemispheres. However, the activation of the subordinate aspect of meaning of unambiguous words appears to be more sensitive to sentential context, especially when the unambiguous word is being processed by the left hemisphere.     

The effect of evaluation on co-occurrence memory judgement

Three experiments tested the effect of an attitude towards an object on the memory judgement of whether this object co-occurred with positive versus negative stimuli. We induced positive or negative attitudes towards novel male stimuli, and paired each man with an equal number of positive and negative animals. In a memory test, participants reported more co-occurrences of same-valence man/animal pairs than opposite-valence pairs. This valence-compatibility effect occurred even when attitudes were induced after the pairing (Experiment 1), when participants knew that each man occurred with an equal number of positive and negative animals (Experiment 2), and in reports of clear memory of pairs that did not co-occur (Experiment 3). The present findings suggest that evaluation causes illusory correlation even when the co-occurring stimuli are not traits or behaviours attributed to the attitude object. The results question the validity of co-occurrence memory judgements as measures of co-occurrence awareness in evaluative conditioning (EC) research.     

The Relationship Between Creative Potential,Aesthetic Response to Music,and Musical Preferences

Previous studies have shown that creative individuals tend to prefer complex stimuli. This study examined the relationship between creative potential, aesthetic response to music, and musical preferences. Seventy-four participants completed two creative potential tests. They listened to three repertoire pieces of different complexity, and rated them on perceived complexity, liking, and interest. Finally, they completed a musical preference questionnaire. Results suggest the relationship between complexity, on the one hand, and liking and interest, on the other, differs between the pieces. Creative potential was found to be related to preference for the more complex musical pieces. Moreover, musical preferences were found to be related both to creative potential and to ratings of the three musical pieces.