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111.
An algorithm for the growth of two-dimensional Penrose tiling, based on symmetry operations on a seed rhombus, is discussed and demonstrated. Independent of empirical matching rules, as suggested by Penrose [Bull. Inst. Math. Appl. 10 266 (1974)], and also overcoming the scaling-down operation, as proposed by Ramachandrarao et al. (Acta Crystallogr. A 47 210 (1991)], the present algorithm follows a mechanism akin to self-assembly and can be continued ad infinitum. 相似文献
112.
Sebastian Grümer Rainer K. Silbereisen Jutta Heckhausen 《International journal of psychology》2013,48(6):1267-1283
This paper investigates the association between perceptions of broader changes in the social‐ecological context and individuals’ subjective well‐being (SWB). Macro‐level societal changes such as globalization or demographic change give rise to new demands for individual functioning at work and/or in the family. Such new demands associated with social change are stressful and likely to be related to lower levels of SWB. Being active agents, individuals attempt to deal with social change and its increasing demands to protect their SWB. The present study investigates which kinds of control strategies are most effective in protecting one's SWB. Specifically, we predicted that control strategies of goal engagement will be most effective under conditions of perceived high control, and control strategies of goal disengagement will be most effective under conditions of perceived low control. In a large sample of 2537 German adults, work‐ and family‐related demands associated with social change were found to be negatively linked to SWB. Moreover and in line with the motivational theory of lifespan development, control strategies of goal engagement and disengagement were beneficial for SWB to the extent that they matched the perceived control of the demands associated with social change. 相似文献
113.
This study examines the extent to which Muslim self‐identification and mosque attendance have changed in the period 1997–2009 among people of Turkish and Moroccan descent in the Netherlands. Mainly trendless fluctuations are found. Overall, Muslim self‐identification seems to very slightly increase and mosque attendance seems to very slightly decrease. We examined the extent to which factors that are important according to theories and previous research explain or enlarge these differences over time. The factors about which we hypothesize are largely unable to explain differences over time in Muslim self‐identification and mosque attendance. 相似文献
114.
Erica J. Dollhopf Christopher P. Scheitle 《Journal for the scientific study of religion》2013,52(4):675-697
Changes in leadership can be difficult for any organization. Leadership transitions in religious congregations might be especially challenging given the personal relationships involved and the spiritual dimension of a leader's position. This complexity often makes it difficult to separate the reasons for the transition from the impacts of the transition. For example, loss of membership and congregational conflict can be both a cause and a consequence of leadership change. Using the 2006–2007 National Congregations Study, this research explores how membership decline and congregational conflict are associated with leadership transitions in religious congregations. Although we find that leadership transitions are associated with conflict and membership decline, we also find that certain factors, such as whether the leader comes from within the congregation and context of the transition, moderate these associations. 相似文献
115.
Jordana Waxman Ryan J. Van Lieshout Saroj Saigal Michael H. Boyle Louis A. Schmidt 《Personality and individual differences》2013
Extremely low birth weight survivors (ELBW; <1000 g) display a personality style characterized by cautiousness, shyness, and risk aversion in their 20s. We examined whether non-impaired ELBW survivors were still more cautious than their normal birth weight (NBW) peers at ages 30–35 and assessed the stability of this personality characteristic across approximately a decade in the oldest known cohort of ELBW survivors. Of the 154 participants tested at ages 22–26, 111 (i.e., 72%) of them returned approximately 10 years later [i.e., 69% (49/71) ELBW and 75% (62/83) NBW], and once again they completed the Eysenck Personality Questionnaire-Revised (EPQ-R). We created the same theoretically and empirically derived composite measure of cautiousness at each visit by summing the EPQ-R psychoticism scale (reverse scored) and the EPQ-R lie scale. We found that ELBW adults reported higher cautiousness than their NBW counterparts at ages 30–35. We also found that levels of cautiousness remained stable over approximately 10 years in both groups. Our findings suggest that individuals born at ELBW were more cautious than NBW peers and that this personality characteristic remained stable into their early 30s. The present study appears to be the first empirical demonstration of personality stability among adult ELBW survivors. 相似文献
116.
Previous research has shown that automatic evaluations can be highly context dependent. Expanding on past research demonstrating context effects for existing attitudes toward familiar objects, the present research examined basic principles that guide the formation of context-dependent versus context-independent automatic attitudes. Results from four experiments showed that: (a) newly formed attitudes generalised to novel contexts when prior experiences with the attitude object were evaluatively homogeneous; (b) when prior experiences were evaluatively heterogeneous, automatic evaluations became context sensitive, such that they reflected the contingency between the valence of prior experiences and the context in which these experiences occurred; and (c) when prior experiences were evaluatively heterogeneous across different contexts, novel contexts elicited automatic evaluations that reflected the valence of first experiences with the attitude object. Implications for research on automatic evaluation and attitude change are discussed. 相似文献
117.
Using the modified Dimensional Change Card Sort task, we examined the influence of positive affect on task switching by inspecting various markers for the costs, including restart cost, switch cost and mixing cost. Given that the executive-control processes that underlie switching performance—i.e., inhibition or shifting—are distinct from the component processes that underlie non-switching performance—i.e., stimulus evaluation, resource allocation or response execution—we hypothesised that if positive affect facilitates task switching via executive-control processes, rather than via component processes, positive affect would reduce both switch and restart costs, but not mixing cost, because both switch and restart costs rely on executive processes, while mixing cost imposes only minimal demands on executive processes. We found beneficial effects of positive affect on both restart and switch costs, but not on mixing costs. These results suggest that positive affect improves switching abilities via executive processes rather than via component processes. 相似文献
118.
This paper demonstrates experimentally that the mere fact that an alternative was chosen in the past increases the likelihood that it will be re-chosen in the future, when new alternatives are being offered. The experimental design consists of a new variation of the free-choice paradigm that is immune to Chen and Risen’s (2010) criticism of how results have been interpreted in previous studies of post-decision effects. An additional experiment indicates that once participants have chosen a particular alternative they view its characteristics more positively. I suggest that the new design can be used to study various aspects of the effect of past decisions on future ones. In the present paper, I apply it to show that the allocation of limited resources among various uses may be biased in favor of a particular use if it was preferred to another in a previous situation. 相似文献
119.
With the aim of increasing knowledge about processes of change in psychodynamic individual child psychotherapy, sessions that could be called turning points were analysed. 相似文献
120.
Geoffrey Nelson 《American journal of community psychology》2013,52(3-4):211-223
I present ideas about how community psychologists, as researcher-activists, can influence public policy. I begin by describing the current neo-liberal era, noting the immense obstacles it poses to progressive policy change. Next I contrast two approaches to understanding policy formation, evidence-based policy and discursive policy analysis, and argue that transformative policy change can benefit from both approaches. I then propose three types of policy outcomes that community psychology research and activism should aim to promote: (a) shaping problem definition, (b) controlling channels for debate and participation, and (c) allocating resources. I use examples from community psychologists’ involvement in policy, mostly in Canada, to illustrate how such policy change can be both achieved and constrained. I conclude by discussing implications for theory and practice related to policy change. 相似文献