Importance of life domains in different cultural groups

This study assessed the role of individualism and collectivism in the shaping of personal values of Canadians, Israelis, and Palestinians. Based on Sagie and Elizur's (1996) multifaceted approach, we distinguished personal values that are individual centered (i.e., associated with one's home, family, or work) from collective-centered values (i.e., associated with the religion, sports, or politics). The magnitude of the difference between both value types differs according to cultural orientation. As compared with Palestinians, we predicted that Canadians and Israelis would rank individual-centered values higher and collective-centered values lower. Data obtained from samples of Palestinians, Israelis, and Canadians supported this hypothesis.     

Assessing the Experience of Autonomy in New Cultures and Contexts

This research demonstrates the usefulness of the technique of Smallest Space Analysis (SSA) in the construction of indices of the experience of autonomy, a central construct in Ryan and Deci’s self-determination theory of motivation and personality (SDT, 2000) and a construct central to recent controversies on socialization in different cultures. We propose that SSA has two advantages in comparison to correlation tables in the assessment of the experience of autonomy. First, it allows easy identification of items that best capture the various motivations along the relative autonomy continuum postulated by SDT. Second, and more important, it can reveal data patterns that might contribute to theoretical refinement that otherwise might remain unnoticed. These advantages were demonstrated in three Israeli samples: two samples of elementary school children (n = 697 and n = 417), and one sample of high school students (n = 317). Discussion considers ways in which SSA can contribute to the development and refinement of measures and theory pertaining to the experience of autonomy in cultures and contexts not examined so far.

Domain specificity in experimental measures and participant recruitment: an application to risk-taking behavior

We challenge the prevailing notion that risk taking is a stable trait, such that individuals show consistent risk-taking/aversive behavior across domains. We subscribe to an alternative approach that appreciates the domain-specific nature of risk taking. More important, we recognize heterogeneity of risk profiles among experimental samples and introduce a new methodology that takes this heterogeneity into account. Rather than using a convenient subject pool (i.e., university students), as is typically done, we specifically targeted relevant subsamples to provide further validation of the domain-specific nature of risk taking. Our research shows that individuals who exhibit high levels of risk-taking behavior in one content area (e.g., bungee jumpers taking recreational risks) can exhibit moderate levels in other risky domains (e.g., financial). Furthermore, our results indicate that risk taking among targeted subsamples can be explained within a cost-benefit framework and is largely mediated by the perceived benefit of the activity, and to a lesser extent by the perceived risk.     

Relations between risk perceptions and socio-political ideology are domain- and ideology- dependent

Public policy intended to address risks is largely determined by government officials who are typically elected by ‘the people’. Lay people presumably support political figures most likely to tackle the risks perceived as relevant. The present research investigated whether risk perceptions vary by risk domain and socio-political ideology. American community adults (N = 387) recruited using Amazon Mechanical Turk completed measures of right-wing authoritarianism (RWA), social dominance orientation (SDO), political conservatism, and perceived domain risks. Risk perceptions of conservatives versus liberals systematically differed by domain: Increases in political conservatism (vs. liberalism) and RWA were associated with perceiving “personal danger” hazards as more risky, whereas increases in SDO were associated with perceiving “competitive” hazards as less risky. A liberal-orientation was associated with heightened risk concerning collective (shared) hazards.     

Olfactory learning-induced enhancement of the predisposition for LTP induction

Learning of a particularly difficult olfactory-discrimination (OD) task results in acquisition of rule learning. This enhancement in learning capability is accompanied by the long-term enhancement of synaptic connectivity between piriform cortex pyramidal neurons. In this study we examined whether olfactory rule learning would modify the predisposition to induce long-term potentiation (LTP) in the pathway projecting from the piriform cortex to the olfactory bulb. We report that OD learning was associated with enhancement in the predisposition to induce LTP. This learning-related effect may be affected by process generation of new granule cells located in the olfactory bulb.     

Stress conditioning in mice: alterations in immunity and tumor growth

The neuroendocrine and autonomic nervous systems are known regulators of brain-immune interaction. However, the functional significance of this interaction under stress is not fully understood. We investigated the effect of a stress paradigm by applying electric foot shock followed by three reminders, on behavior, immune parameters, and lymphoma tumor growth. Male C3H mice were divided into two groups: Group 1-exposed to electric foot shock followed by three reminders, and Group 2-untreated (controls). Sets of mice underwent the elevated plus maze, staircase, and hot plate tests. After foot shock, natural killer (NK) cell activity, and lymphocyte proliferation were measured. In addition, sets of mice were either vaccinated twice with B-cell lymphoma 38C-13 immunoglobulin for determination of anti-idiotype (Id) antibodies in sera, or inoculated with tumor cells and monitored for tumor development and survival time. Mice exposed to electric foot shock followed by the three reminders had higher NK cell activity, levels of anti-Id antibodies, and a higher proliferation rate of splenocytes in response to mitogens, than the control mice. The exposed mice also showed attenuated tumor growth. Thus, the stress paradigm inhibited tumor development and lead to some immune changes that were not accompanied by behavioral changes.     

Supervisors’ Autonomy Support as a Predictor of Job Performance Trajectories

Studies have shown that supervisors’ autonomy supportive managerial style predicts static job performance and other positive organisational outcomes (Gagné & Deci, 2005 ). The present study extends these results by investigating the ways in which supervisors’ autonomy support affected job performance trajectories over a period of 5 months in a sample of 68 newly employed sport analysts. Multilevel modeling indicated that performance increases in a decelerated fashion over time. Perceived supervisors’ autonomy support significantly moderated the linear and quadratic performance trajectories. Thus, over time, the performance growth of employees who perceived their supervisors as supportive of their autonomy was steeper and decelerated at a slower rate. The implications are discussed in the light of autonomy support within Self‐Determination Theory (Deci & Ryan, 2000 ).