A formal signal detection model of eyewitness identification. The project aims to aid in producing better procedures for the collection and assessment of eyewitness identification evidence. In a police line-up, a witness is asked to identify a perpetrator from a group of similar individuals. Applied research has focused on conditions that optimise witness performance but many of the conclusions from this research have been challenged on the basis that they use inappropriate measures of performan ....A formal signal detection model of eyewitness identification. The project aims to aid in producing better procedures for the collection and assessment of eyewitness identification evidence. In a police line-up, a witness is asked to identify a perpetrator from a group of similar individuals. Applied research has focused on conditions that optimise witness performance but many of the conclusions from this research have been challenged on the basis that they use inappropriate measures of performance. Recent work has highlighted the usefulness of analyses based on the theory of signal detection. However, the line-up task does not fit easily within standard signal detection paradigms as it combines two tasks; detection and identification. The project aims to understand how these components work in order to measure witness performance.Read moreRead less
Uncovering the processes underlying human category learning. There is a pervasive belief that complex tasks can somehow be learned via a 'smart' implicit or procedural learning mechanism, which operates independently of memory and attention. This idea has important implications for our understanding of cognition. If true, there seems little point in providing explicit instruction in such tasks, and efforts to do so are, at best, wasted time and, at worst, detrimental to the learning process. Th ....Uncovering the processes underlying human category learning. There is a pervasive belief that complex tasks can somehow be learned via a 'smart' implicit or procedural learning mechanism, which operates independently of memory and attention. This idea has important implications for our understanding of cognition. If true, there seems little point in providing explicit instruction in such tasks, and efforts to do so are, at best, wasted time and, at worst, detrimental to the learning process. This project will provide much-needed scrutiny of this idea and will help not only to re-orient our understanding of how we deal with complex information, but will also highlight issues about data interpretation that are fundamental for the research and wider communities.Read moreRead less
The effect of temperature biofeedback on sleep and cardiac autonomic tone in young and aged adults. Peripheral heat loss is reported to promote sleep onset. To date, however, most studies examining the thermoregulatory model of sleep onset have used sedative-hypnotics with both thermoregulatory and soporific effects. We propose that a better test of a causal relationship between peripheral heat loss and sleep can be achieved by using temperature biofeedback; a promising non-invasive and non-dr ....The effect of temperature biofeedback on sleep and cardiac autonomic tone in young and aged adults. Peripheral heat loss is reported to promote sleep onset. To date, however, most studies examining the thermoregulatory model of sleep onset have used sedative-hypnotics with both thermoregulatory and soporific effects. We propose that a better test of a causal relationship between peripheral heat loss and sleep can be achieved by using temperature biofeedback; a promising non-invasive and non-drug treatment that does not have a direct effect on sleep structures. We aim to test whether increased peripheral heat loss promotes sleep onset, whether the effects are mediated by changes in autonomic tone, and whether this relationship changes with age.Read moreRead less
Identifying and resolving challenges to the effectiveness of collective apologies. It is increasingly common for nations and organisations to apologise for current or past wrongdoing. This research investigates the unique psychological reasons for why collective apologies (as opposed to interpersonal ones) might struggle to win acceptance for victim groups; with an eye to identifying conditions that facilitate intergroup forgiveness.
Toward a social-psychology of prejudice reduction: Examining lay beliefs. This project aims to expand social–psychological knowledge of prejudice by examining beliefs about what prejudice is, as well as the social and psychological factors affecting these beliefs. If people believe their own intergroup attitudes (even negative ones) to be correct and normative, anti-prejudice appeals will likely be rejected. What is needed, then, is an analysis of what people believe to be prejudice or not in th ....Toward a social-psychology of prejudice reduction: Examining lay beliefs. This project aims to expand social–psychological knowledge of prejudice by examining beliefs about what prejudice is, as well as the social and psychological factors affecting these beliefs. If people believe their own intergroup attitudes (even negative ones) to be correct and normative, anti-prejudice appeals will likely be rejected. What is needed, then, is an analysis of what people believe to be prejudice or not in the first place, and how these beliefs are changed. This project aims to provide this analysis via qualitative and quantitative experimental social-psychological research. Project outcomes are expected to clarify social–psychological theory, offering new insight into how anti-prejudice arguments can be successful.Read moreRead less
Outcomes of collective action: After the blockade, what next? The project intends to study how collective actors react when conventional or radical collective action succeeds or fails. If a democratic protest rally is ignored by authorities, does support for violence increase? If a turbulent riot attracts favourable media attention and concessions, does this increase the likelihood of future riots or undercut them? This project aims to answer these questions. It plans to test a new, theoreticall ....Outcomes of collective action: After the blockade, what next? The project intends to study how collective actors react when conventional or radical collective action succeeds or fails. If a democratic protest rally is ignored by authorities, does support for violence increase? If a turbulent riot attracts favourable media attention and concessions, does this increase the likelihood of future riots or undercut them? This project aims to answer these questions. It plans to test a new, theoretically integrative model of collective action and the intergroup dynamic, using a mixed-methods approach including experiments, small group research and longitudinal field surveys. Project outcomes may provide an evidence basis for policy-makers' debates about trajectories of radicalisation and deradicalisation, and for recommendations about engagement and negotiation of tactics for activists, political parties, and nongovernment organisations.Read moreRead less
Speed of Information Processing Across the Ages: the Structure of Cognitive Abilities in Children, Adults, and the Elderly. Does speed information processing determine intelligence? The study addresses this question by examining the structure of cognitive abilities and speed of processing in children, adults, and the elderly. The project will advance theory by testing whether speed of processing mediates developmental cognitive change during childhood and old age. Outcomes include contributing t ....Speed of Information Processing Across the Ages: the Structure of Cognitive Abilities in Children, Adults, and the Elderly. Does speed information processing determine intelligence? The study addresses this question by examining the structure of cognitive abilities and speed of processing in children, adults, and the elderly. The project will advance theory by testing whether speed of processing mediates developmental cognitive change during childhood and old age. Outcomes include contributing to a complete model of cognition, laying the foundations for a future major longitudinal study which will provide evidence on the direction of causality between speed of processing measures and cognitive abilities, and provide norms for a computerised, commercial test battery.Read moreRead less
How inhibition shapes human brain oscillations and working memory capacity. This project aims to investigate the link between inhibitory mechanisms, gamma oscillations and working memory in humans. Retaining information in short-term ‘working’ memory is crucial for cognition, influencing our personality and intelligence. However, the brain mechanisms underlying this process are unclear. Evidence from animal/computational research indicates that brain oscillations in high frequency ‘gamma’ bands, ....How inhibition shapes human brain oscillations and working memory capacity. This project aims to investigate the link between inhibitory mechanisms, gamma oscillations and working memory in humans. Retaining information in short-term ‘working’ memory is crucial for cognition, influencing our personality and intelligence. However, the brain mechanisms underlying this process are unclear. Evidence from animal/computational research indicates that brain oscillations in high frequency ‘gamma’ bands, which depend on neural inhibition, are critical for working memory. Mapping a path from molecules to cognition will detail how neural mechanisms shape human behavioural performance and guide efforts to enhance memory and cognitive function.Read moreRead less
How feedback can impair recognition judgments and undermine border security, criminal investigations, educational testing, and medical screening. If a customs officer learns that they have missed an explosive device while screening luggage, will this affect their judgment? In many scenarios, a person receives feedback about their recognition memory performance and has to try again without having another chance to study the material. Almost no research has examined the effects of feedback on reco ....How feedback can impair recognition judgments and undermine border security, criminal investigations, educational testing, and medical screening. If a customs officer learns that they have missed an explosive device while screening luggage, will this affect their judgment? In many scenarios, a person receives feedback about their recognition memory performance and has to try again without having another chance to study the material. Almost no research has examined the effects of feedback on recognition in the absence of opportunity for further study. This is problematic because many vitally important recognition decisions lack such opportunity. Using various scenarios (face recognition, security screening, multiple-choice testing, and medical screening) this project will demonstrate that feedback affects recognition performance differently depending on the nature of the recognition decision.Read moreRead less
Are two processes one too many? An investigation of the viability of the dual-process model of recognition memory. Memory is the glue that holds together our lives and personal identities. While psychologists are developing better and more sophisticated accounts of how it works, many deep questions remain. The present research examines some of these questions in relation to how memory can be decomposed into its component processes and how we are to understand these processes. An appropriate unde ....Are two processes one too many? An investigation of the viability of the dual-process model of recognition memory. Memory is the glue that holds together our lives and personal identities. While psychologists are developing better and more sophisticated accounts of how it works, many deep questions remain. The present research examines some of these questions in relation to how memory can be decomposed into its component processes and how we are to understand these processes. An appropriate understanding of these questions is vital to the development of interventions (both psychological and pharmacological) designed to halt or even reverse memory decline associated with normal aging and age-associated brain disease (such as Alzheimer disease).Read moreRead less