Modelling human decision making in complex environments. The project aims to extend quantitative psychological models of simple choice tasks to decision-making with complex stimuli in complex environments. The new formal models are designed to provide a comprehensive account of behaviour, including the choices that are made, how long it takes to make them, and how choices and choice times vary within and between decision-makers. The models would explain how people adapt to changes in task demand ....Modelling human decision making in complex environments. The project aims to extend quantitative psychological models of simple choice tasks to decision-making with complex stimuli in complex environments. The new formal models are designed to provide a comprehensive account of behaviour, including the choices that are made, how long it takes to make them, and how choices and choice times vary within and between decision-makers. The models would explain how people adapt to changes in task demands when dealing with multiple stimuli or performing multiple tasks concurrently under time pressure. The project aims to provide the basic research that is needed to extend psychological models of choice to complex ‘real-world’ tasks, such air traffic control and maritime surveillance.Read moreRead less
Leadership, social identity and the dynamics of influence in intergroup relations: A new understanding of social continuity and social change. Understanding how social change occurs (or continuity prevails) and the role of leadership in this process is paramount to any social system (e.g. nation, state, organization, team). This project provides a new social psychological understanding of leadership and social change dynamics, including when more radical leaders and social relations emerge, as w ....Leadership, social identity and the dynamics of influence in intergroup relations: A new understanding of social continuity and social change. Understanding how social change occurs (or continuity prevails) and the role of leadership in this process is paramount to any social system (e.g. nation, state, organization, team). This project provides a new social psychological understanding of leadership and social change dynamics, including when more radical leaders and social relations emerge, as well as how different groups become more united around a common cause. Given ethnic, religious, social and political diversity of Australian society, these questions are fundamental to strengthening Australia's social fabric. This research also has cross-disciplinary applications, builds international collaborations, and supports emerging Australian research talent.Read moreRead less
Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air insi ....Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air inside leaves based on stable isotope analysis of carbon dioxide and water vapour exchanged between leaves and air. The project is expected to provide fundamental knowledge about how stomata regulate photosynthesis and water use, with significant implications for modelling vegetation function and for improving the performance of crop plants.Read moreRead less
Will stomatal responses to humidity and carbon dioxide constrain tropical forest productivity as atmospheric carbon dioxide rises? This project will investigate two physiological processes that will partly determine growth responses of tropical forest trees to rising atmospheric carbon dioxide. The project will produce equations summarising physiological responses that can be incorporated into process-based models of tropical forest productivity.
Adjustment to retirement through social identity change. This project aims to improve our understanding of the factors governing successful adjustment to retirement. Retirement involves a major life change, to which 30 per cent of people fail to adjust successfully. Previous work in the social identity tradition suggests that the negative effects of significant life changes (eg moving into care) can be buffered by access to social group networks, but this possibility has not been examined in the ....Adjustment to retirement through social identity change. This project aims to improve our understanding of the factors governing successful adjustment to retirement. Retirement involves a major life change, to which 30 per cent of people fail to adjust successfully. Previous work in the social identity tradition suggests that the negative effects of significant life changes (eg moving into care) can be buffered by access to social group networks, but this possibility has not been examined in the context of retirement. This project plans to address this gap through studies that establish the importance of social group factors for successful adjustment among Australian, English, American and Chinese retirees. It also plans to test the efficacy of a new model that seeks to improve adjustment to retirement by incorporating various forms of social planning into preparation for this transition.Read moreRead less
How do bees orchestrate smooth landings? The results should pave the way for the development of novel, biologically inspired strategies for the control of landing in unmanned aerial vehicles. Endowing aircraft with the capability of autonomous flight and landing has been a major challenge in engineering technology. There is now considerable interest, nationally and world wide, in the development of small, intelligent, autonomous airborne vehicles for application in a number of areas of defense, ....How do bees orchestrate smooth landings? The results should pave the way for the development of novel, biologically inspired strategies for the control of landing in unmanned aerial vehicles. Endowing aircraft with the capability of autonomous flight and landing has been a major challenge in engineering technology. There is now considerable interest, nationally and world wide, in the development of small, intelligent, autonomous airborne vehicles for application in a number of areas of defense, surveillance and space exploration. The proposed research will help Australia maintain a leading edge in uncovering important biological principles of flight control that can be translated into useful technological applications.Read moreRead less
Linking phytoplankton to fisheries using zooplankton size spectra. This project aims to develop innovative numerical methods to understand the dynamics, carbon export, and trophic structure of zooplankton. The trophic links between phytoplankton, zooplankton and fisheries are unknown. The size- frequency distribution of zooplankton (size spectrum) is an innovative method for estimating their growth, predation and production as food for fish. Analysis of a global synthesis of zooplankton size dis ....Linking phytoplankton to fisheries using zooplankton size spectra. This project aims to develop innovative numerical methods to understand the dynamics, carbon export, and trophic structure of zooplankton. The trophic links between phytoplankton, zooplankton and fisheries are unknown. The size- frequency distribution of zooplankton (size spectrum) is an innovative method for estimating their growth, predation and production as food for fish. Analysis of a global synthesis of zooplankton size distributions from tropical to polar environments are expected to reveal these vital rates of pelagic ecosystems. The zooplankton rates will reveal, for the first time, the link between phytoplankton and fisheries, and will significantly improve ecosystem models and global assessments of environmental change.Read moreRead less
Approaching the Out group Unlocks Intergroup Contact's Benefits for Society. Extensive research on group desegregation shows that intergroup contact (face-to-face interactions between people of opposing groups) should be encouraged for harmonious group relations; such contact maximises social integration, self-esteem, health, and productivity. However, these benefits are often missed as people actively avoid intergroup contact. This research introduces a theoretically- and empirically-grounded t ....Approaching the Out group Unlocks Intergroup Contact's Benefits for Society. Extensive research on group desegregation shows that intergroup contact (face-to-face interactions between people of opposing groups) should be encouraged for harmonious group relations; such contact maximises social integration, self-esteem, health, and productivity. However, these benefits are often missed as people actively avoid intergroup contact. This research introduces a theoretically- and empirically-grounded typology of contact approach-avoidance that aims to: identify personal and situational determinants driving out-group approach in natural settings; delineate outcomes of out-group approach for psychological processes critical to intergroup relations; and, indicate new interventions for encouraging intergroup contact.Read moreRead less
Hydraulic control on water use, growth and survival in tropical rainforest. This project aims to measure drought-related limits to water transport in the woody xylem tissue of trees in Australian tropical rainforests, to understand how this influences tree water use, photosynthesis, health and mortality risk. Tropical rainforests are sensitive to climate variability, especially drought, but this sensitivity is poorly understood, despite large effects regionally and globally. This project will co ....Hydraulic control on water use, growth and survival in tropical rainforest. This project aims to measure drought-related limits to water transport in the woody xylem tissue of trees in Australian tropical rainforests, to understand how this influences tree water use, photosynthesis, health and mortality risk. Tropical rainforests are sensitive to climate variability, especially drought, but this sensitivity is poorly understood, despite large effects regionally and globally. This project will compare forests that contrast strongly in seasonal drought stress, and use the information to develop a model designed for species-diverse forest, with subsequent potential global application. The understanding gained will enable widely applicable advances designed to feed through rapidly to regional- and global-scale models that inform land use, economic and social policy-making.Read moreRead less
Trust in a social and digital world. This project aims to provide a systematic and empirically-informed account of the way networks facilitate or hinder knowledge. Distinguishing on-line information from disinformation can be difficult. This task can be greatly assisted by networks of trusted peers, but figuring out who to trust is itself a challenge. Identifying, designing, and facilitating networks of trust is therefore an urgent task. By using the tools of social epistemology, virtue epistemo ....Trust in a social and digital world. This project aims to provide a systematic and empirically-informed account of the way networks facilitate or hinder knowledge. Distinguishing on-line information from disinformation can be difficult. This task can be greatly assisted by networks of trusted peers, but figuring out who to trust is itself a challenge. Identifying, designing, and facilitating networks of trust is therefore an urgent task. By using the tools of social epistemology, virtue epistemology, and network science, this project will identify how individuals should distribute their trust when embedded in epistemically hostile environments.Read moreRead less