Choice between constant and variable alternatives by rats: effects of different reinforcer amounts and energy budgets

Two experiments, using rats as subjects, investigated the effect of different reinforcer amounts and energy budgets on choice between constant and variable alternatives under a closed economy. Rats were housed in the chamber and were exposed to a modified concurrent-chains schedule in which the choice phase was separated from a rest phase during which the rats could engage in other activities. In the choice phase, a single variable-interval schedule arranged entry into one of two equal terminal links (fixed-interval schedules). The constant terminal link ended with the delivery of a fixed number of food pellets (two or three, depending on the condition), whereas the variable terminal link ended with a variable number of food pellets (means of two or three, depending on the condition). Energy budget was defined as positive when body weights were over 90% of free-feeding weights, and as negative when they were under 80% of free-feeding weights. The different body weights were produced by varying the duration of the equal terminal-link schedules within daily 3-hr sessions. In Experiment 1, rats chose between a constant and a variable three pellets under both energy budgets. Rats preferred the constant three pellets more under the positive energy budget, whereas they were indifferent under the negative energy budget. In Experiment 2, rats chose between a constant three pellets and a variable two pellets, and chose between a constant two pellets and a variable three pellets under both energy budgets. The rats strongly preferred the constant three pellets over the variable two pellets under both energy budgets. In contrast, rats preferred the variable three pellets over the constant two pellets only under the negative energy budget, whereas they were indifferent under the positive energy budget. These results indicate that rats choices are sensitive to the difference in reinforcer amounts and to the energy budgets defined by the level of body weight. The present results are consistent with those obtained with small granivorous birds as well as with the predictions of a recent risk-sensitive foraging theory.     

An experimental analysis of electricity conservation procedures

Daily electricity consumption of four families was recorded for 106 days. A reversal design, consisting of various experimental conditions interspersed between repeated baseline conditions, was used. During experimental conditions, daily prompts (written conservation slogans attached to front doors) and/or daily feedback (daily kilowatts consumed and daily cost information) were in effect. Maximum consumption occurred during the initial baseline; minimum consumption occurred during different experimental conditions for different families. The mean decrease from the maximum to the minimum for all families was 35%. Reversals in consumption were demonstrated in three families, although successive baselines tended to decrease. No clear differences in effectiveness between prompting and feedback conditions were apparent. The procedures used resulted in considerable dollar savings for the families.     

ENERGY AND THE GENERATION OF THE WORLD

Abstract. Energy concepts in theology and natural science are studied to see how they may aid the science-theology dialogue. Relationships between divine and human energies in classical Christology and energy ideas in process theology are significant. In physics, energy has related roles as something conserved and as the generator of temporal development. We explore ways in which God and the world may interact to produce evolution of the universe. Possible connections between the double role of physical energy and the bipolar character of God in process theology are noted. Energy helps to describe God's relationship with the world in both theological viewpoints and, thus, may bridge them.     

Petro-theology: Critical engagement with theologies of energy and extraction

This essay serves as a more extended introduction to many of the themes, concerns, and aims of this issue. Along these lines, key terms and discourses like extractivism, energy humanities, and petroculture studies are introduced. The essay elaborates two key claims: energy has been theological (and not just techno-scientific) and analysis of current energy concerns (including climate change) need to be theorized and addressed in relation to land. These claims call for approaches to an energy-driven climate crisis that attend to theo-philosophical assumptions of energy and extraction and point to the significance of energy humanities approaches. Engagement with energy and extractivism humanities leads to a call for further attention to three different areas within Christian energy ethics and Religion & Environmentalism scholarship: (1) an approach to Christian energy ethics that better accounts for the theo-philosophical gendered, racialized, and colonial implications of energy concepts, (2) closer attention to mineralogies and geologies among ecotheologians and 3) critical assessment of convergences of creation and redemption theologies for extractive aims.     

Why do leaders engage in destructive behaviours? The role of leaders’ working environment and stress

Complementing previous research on antecedents of destructive leadership, we examined the role of work stressors in the emergence of active and passive destructive leadership behaviours. Building on conservation of resources theory, we examined direct and indirect relations between leaders’ perceptions of workload, role ambiguity and intragroup conflict on ratings of their own destructive leadership, as well as mediating paths through perceived stress. We used a two-wave survey design consisting of a random sample of 1311 managers. Structural equation modelling revealed that work stressors were only related to passive forms of destructive leadership, whereas personality was related to both active and passive forms of destructive leadership. Implications for research and practice are discussed.     

TEILHARD'S TWO ENERGIES

Abstract. Resolution of the entropy‐evolution problem was a significant issue for Pierre Teilhard de Chardin throughout his scientific career. Although never truly satisfied with his solution, he proposed that all energy must be psychic and contain two components. Tangential energy is related to physical energy. Radial energy in some way accounts for increasing complexity and consciousness in evolution. Analysis of developments in thermodynamics, statistical mechanics, and information theory show that Gibbs free energy contains both calorimetric and noetic components, thus validating Teilhard's intuition.     

Tool use as a way to assess cognition: how do captive chimpanzees handle the weight of the hammer when cracking a nut?

Tool use in apes has been considered a landmark in cognition. However, while most studies concentrate on mental operations, there are very few studies of apes’ cognition as expressed in manual skills. This paper proposes theoretical and methodological considerations on movement analysis as a way of assessing primate cognition. We argue that a privileged way of appraising the characteristics of the cognitive abilities involved in tool use lies at the functional level. This implies that we focus on how the action proceeds, and more precisely, on how the functional characteristics of the task are generated. To support our view, we present the results of an experiment with five captive chimpanzees investigating the way how chimpanzees adapt to hammers of various weights while cracking nuts. The movement performed in the hammering task is analyzed in terms of energy production. Results show that chimpanzees mobilise passive as well as active forces to perform the compliant movement, that is, they modulate the dynamics of the arm/tool system. A comparison between chimpanzees suggests that experience contributes to this skill. The results suggest that in tool use, movements are not key per se, but only in as much as they express underlying cognitive processes. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.

Averting the Tragedy of the Commons: Using Social Psychological Science to Protect the Environment

ABSTRACT— Many local and global environmental challenges are tragedies-of-the-commons dilemmas in which private and collective interests are frequently at odds. Recent developments in social psychological theory and research suggest that in such commons dilemmas people are not just motivated by narrow (economic) self-interest but that they also consider the broader implications of their decisions for others and for the natural environment. Based on a core-motives analysis, I identify four necessary components for designing interventions to protect the environment: (a) information, (b) identity, (c) institutions, and (d) incentives, and discuss their utility and the feasibility of incorporating them.     

心理科学的生命力在于超越与容纳

科学心理学19世纪末传入中国。在中国经历了几十年的坎坷历程,直到1978年后,才得到正常的发展。改革开放20年来,心理学参与了国家的发展和建设,也强化了自身,取得了举世瞩目的成绩。但是,心理科学工作者必须超越自己原有知识的局限性,容纳一切自己没有学习过的东西;必须超越自己的视野,走出实验室,走出校门,面向社会,容纳一切个人不熟悉的东西;还必须超越本地区、超越国界,容纳先进地区、发达国家的先进经验,才能使我们的心理科学具有强大的生命力,才能推动心理科学的空前发展。