Changes in Events Alter How People Remember Recent Information

Observers spontaneously segment larger activities into smaller events. For example, “washing a car” might be segmented into “scrubbing,” “rinsing,” and “drying” the car. This process, called event segmentation, separates “what is happening now” from “what just happened.” In this study, we show that event segmentation predicts activity in the hippocampus when people access recent information. Participants watched narrative film and occasionally attempted to retrieve from memory objects that recently appeared in the film. The delay between object presentation and test was always 5 sec. Critically, for some of the objects, the event changed during the delay whereas for others the event continued. Using fMRI, we examined whether retrieval-related brain activity differed when the event changed during the delay. Brain regions involved in remembering past experiences over long periods, including the hippocampus, were more active during retrieval when the event changed during the delay. Thus, the way an object encountered just 5 sec ago is retrieved from memory appears to depend in part on what happened in those 5 sec. These data strongly suggest that the segmentation of ongoing activity into events is a control process that regulates when memory for events is updated

Easy on that trigger dad: a study of long term family photo retrieval

We examine the effects of new technologies for digital photography on people's longer term storage and access to collections of personal photos. We report an empirical study of parents' ability to retrieve photos related to salient family events from more than a year ago. Performance was relatively poor with people failing to find almost 40% of pictures. We analyze participants' organizational and access strategies to identify reasons for this poor performance. Possible reasons for retrieval failure include: storing too many pictures, rudimentary organization, use of multiple storage systems, failure to maintain collections and participants' false beliefs about their ability to access photos. We conclude by exploring the technical and theoretical implications of these findings

The Costs of Changing Our Minds

This isn’t quite a draft yet – it’s a concept paper. You’ll see after the first 10 pages a good bit of text in brackets, which are primarily notes for me, but it’ll give you a sense of the content of those sections. I’d like to talk through the concept – the “duty” to mitigate emotional distress damages and how courts have struggled with it, as a foray into a broader dichotomy that I see in a number of areas of law that suggest an implicit value in “cognitive liberty.” This is a smaller version of a broader book project “On Cognitive Liberty” that I’m writing, but I’d like to talk through how I might structure this as a standalone article. Forgive its brevity and incompleteness, but it’s a great time for me to workshop the concept with you

Easy on that trigger dad: a study of long term family photo retrieval

We examine the effects of new technologies for digital photography on people's longer term storage and access to collections of personal photos. We report an empirical study of parents' ability to retrieve photos related to salient family events from more than a year ago. Performance was relatively poor with people failing to find almost 40% of pictures. We analyze participants' organizational and access strategies to identify reasons for this poor performance. Possible reasons for retrieval failure include: storing too many pictures, rudimentary organization, use of multiple storage systems, failure to maintain collections and participants' false beliefs about their ability to access photos. We conclude by exploring the technical and theoretical implications of these findings

Manipulating Memory Associations Changes Decision-making Preferences in a Preconditioning Task

Memories of past experiences can guide our decisions. Thus, if memories are undermined or distorted, decision making should be affected. Nevertheless, little empirical research has been done to examine the role of memory in reinforcement decision-making . We hypothesized that if memories guide choices in a conditioning decision-making task, then manipulating these memories would result in a change of decision preferences to gain reward. We manipulated participants’ memories by providing false feedback that their memory associations were wrong before they made decisions that could lead them to win money . Participants’ memory ratings decreased significantly after receiving false feedback. More importantly, we found that false feedback led participants’ decision bias to disappear after their memory associations were undermined . Our results suggest that reinforcement decision-making can be altered by fasle feedback on memories . The results are discussed using memory mechanisms such as spreading activation theories

Solidarity in a global age: Seattle and beyond

There are good grounds for taking seriously Wallerstein's dictum that the world system has entered what he describes as an interregnum. By this he means two important things: First, that the world is moving between two forms of world system, from a capitalist world system to something new; Second, that in such an interregnum questions of structure become less significant than those of agency. The world system is one that has been produced, reproduced and will ultimately be transformed by human actors. The direction that it takes will be the result of the political struggles that ensue in the interregnum. In this paper I examine some of these claims in the context of a series of events that have taken place over the past decade and in the run up to the protests that occurred in December 1999 at the World Trade Organization (WTO) summit in Seattle. In so doing I hope to put some empirical flesh on the bones of the idea that Wallerstein has suggestively offered us. While I am critical of important aspects of Wallerstein's work and that of his cohorts at the Fernand Braudel Center I would equally argue that they have presented us with the most powerful and coherent framework for making sense of, I hesitate to use the term given Wallerstein's ontological assumptions, international relations. Thus, this paper is informed by sympathy with Wallerstein's ideas and an acknowledgement that they offer us a rich source of insight into the emergence of the modern world order

Narcissus to a Man: Lifelogging, Technology and the Normativity of Truth

The growth of the practice of lifelogging, exploiting the capabilities provided by the exponential increase in computer storage, and using technologies such as SenseCam as well as location-based services, Web 2.0, social networking and photo-sharing sites, has led to a growing sense of unease, articulated in books such as Mayer-Schönberger's Delete, that the semi-permanent storage of memories could lead to problematic social consequences. This talk examines the arguments against lifelogging and storage, and argues that they seem less worrying when placed in the context of a wider debate about the nature of mind and memory and their relationship to our environment and the technology we use

Who done it, actually? Dissociative identity disorder for the criminologist

Through the analysis of clinical examples, the paper explores how decisions are made by a person with Dissociative Identity Disorder (DID), the notions of choice and ‘competent reasoning’, and the practical and ethical ways for interviewing a person with DID. Abstract Dissociative Identity Disorder (DID) is examined in this paper from the perspective of its relevance to the criminologist. As this psychiatric condition is linked to severe and prolonged childhood abuse, accounts of DID patients inevitably involve reports of serious crimes, in which the person was the victim, perpetrator or witness. These reports can thus contain crucial information for criminal investigations by the police or for court proceedings. However, due to the person’s dissociation, such reports are often very confusing, hard to follow, hard to believe and difficult to obtain. They also frequently state that the person had ‘no choice’, a thorny notion for the criminologist (as well as for the clinician). Through the analysis of clinical examples, the paper explores how decisions are made by a person with DID, the notions of choice and ‘competent reasoning’, and the practical and ethical ways for interviewing a person with DID