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Immediate Rewards (immediate + reward)

Distribution by Scientific Domains

Medical Sciences	60%
Business, Economics, Finance and Accounting	30%

Selected Abstracts

Anabolic,androgenic steroid dependence: an emerging disorder

ADDICTION, Issue 12 2009
Gen Kanayama
ABSTRACT Aims Anabolic,androgenic steroids (AAS) are widely used illicitly to gain muscle and lose body fat. Here we review the accumulating human and animal evidence showing that AAS may cause a distinct dependence syndrome, often associated with adverse psychiatric and medical effects. Method We present an illustrative case of AAS dependence, followed by a summary of the human and animal literature on this topic, based on publications known to us or obtained by searching the PubMed database. Results About 30% of AAS users appear to develop a dependence syndrome, characterized by chronic AAS use despite adverse effects on physical, psychosocial or occupational functioning. AAS dependence shares many features with classical drug dependence. For example, hamsters will self-administer AAS, even to the point of death, and both humans and animals exhibit a well-documented AAS withdrawal syndrome, mediated by neuroendocrine and cortical neurotransmitter systems. AAS dependence may particularly involve opioidergic mechanisms. However, AAS differ from classical drugs in that they produce little immediate reward of acute intoxication, but instead a delayed effect of muscle gains. Thus standard diagnostic criteria for substance dependence, usually crafted for acutely intoxicating drugs, must be adapted slightly for cumulatively acting drugs such as AAS. Conclusions AAS dependence is a valid diagnostic entity, and probably a growing public health problem. AAS dependence may share brain mechanisms with other forms of substance dependence, especially opioid dependence. Future studies are needed to characterize AAS dependence more clearly, identify risk factors for this syndrome and develop treatment strategies. [source]

High-Alcohol Preferring Mice Are More Impulsive Than Low-Alcohol Preferring Mice as Measured in the Delay Discounting Task

ALCOHOLISM, Issue 7 2009
B. G. Oberlin
Background:, Repeated studies have shown that high impulsivity, when defined as the tendency to choose small immediate rewards over larger delayed rewards, is more prevalent in drug addicts and alcoholics when compared with nonaddicts. Assessing whether impulsivity precedes and potentially causes addiction disorders is difficult in humans because they all share a history of drug use. In this study, we address this question by testing alcohol-naïve mice from lines showing heritable differences in alcohol intake. Methods:, Replicated selected lines of outbred high-alcohol preferring (HAP) mice were compared to a low-alcohol preferring (LAP) line as well as the low-drinking progenitor line (HS/Ibg) on an adjusting amount delay discounting (DD) task. The DD task employs 2 levers to present subjects with a choice between a small, immediate and a large, delayed saccharin reward. By adjusting the quantity of the immediate reward up and down based on choice behavior, the task allows an estimate of how the subjective value of the delayed reinforcer decreases as delays increase. Latency to respond was also measured for each trial. Results:, Both HAP2 and HAP1 lines of mice were more impulsive than the LAP2 and HS/Ibg lines, respectively. Hyperbolic curve-fitting confirmed steeper discounting in the high-alcohol drinking lines. In addition, the high-alcohol drinking lines demonstrated greater within-session increases in reaction times relative to the low-alcohol drinking lines. No other differences (consumption of saccharin, total trials completed) consistently mapped onto genetic differences in alcohol drinking. Conclusions:, Alcohol-naïve outbred mice selected for high-alcohol drinking were more impulsive with saccharin reinforcers than low-alcohol drinkers. These data are consistent with results seen using inbred strain descendents of high-alcohol drinking and low-alcohol drinking rat lines, and suggest that impulsivity is a heritable difference that precedes alcoholism. [source]

Managing radical innovation: an overview of emergent strategy issues

THE JOURNAL OF PRODUCT INNOVATION MANAGEMENT, Issue 6 2002
Christopher M. McDermott
Despite differences in definitions, researchers understand that radical innovation within an organization is very different from incremental innovation [13,17,21] and that it is critical to the long-term success of firms. Unfortunately, research has also shown that it is often difficult to get support for radical projects in large firms [14], where internal cultures and pressures often push efforts toward more low risk, immediate reward, incremental projects. Interestingly, we know considerably less about the effective management of the product development process in the radical than in an incremental context. The purpose of this study is to explore the process of radical new product development from a strategic perspective, and to outline key observations and challenges that managers face as they move these projects to market. The findings presented here represent the results of a longitudinal (since 1995), multidisciplinary study of radical innovation projects. A multiple case study design was used to explore the similarities and differences in management practices applied to twelve radical innovation projects in ten large, established North American firms. The findings are grouped into three high-level strategic themes. The first theme, market scope, discusses the challenges associated with the pursuit of familiar versus unfamiliar markets for radical innovation. The second theme of competency management identifies and discusses strategic challenges that emerge as firms stretch themselves into new and unfamiliar territory. The final theme relates to the people issues that emerge as both individuals and the project teams themselves try to move radical projects forward in organizations that are not necessarily designed to support such uncertainty. A breadth of subtopics emerge within and across this framework relating to such ideas as risk management, product cannibalization, team composition, and the search for a divisional home. Taken together, our observations reinforce the emerging literature that shows that project teams engaging in radical innovation encounter a much different set of challenges than those typically faced by NPD teams engaged in incremental innovation. [source]

Studying the relation between temporal reward discounting tasks used in populations with ADHD: A factor analysis

INTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH, Issue 3 2010
Anouk Scheres
Abstract Background: This study aimed at investigating the relationship between tasks that have been used in attention deficit hyperactivity disorder (ADHD) to measure choices between smaller immediate and larger delayed rewards: real and hypothetical temporal discounting tasks, and single-choice paradigms. Methods: Participants were 55 undergraduate psychology students. Tasks included a real and hypothetical version of a temporal discounting (TD) task with choices between a large reward (10 cents) after delays up to 60 seconds, and smaller immediate rewards (2,8 cents); two versions of a hypothetical temporal discounting task with choices between a large reward ($100) after delays up to 120 months, and smaller immediate rewards ($1,$95); a Choice Delay Task with choices between one point now and two points after 30 seconds (one point is worth five cents). Results: Correlation analyses showed that the real and the hypothetical TD tasks with 10 cents were very strongly associated. However, the hypothetical TD tasks with $100 did not correlate with either the real or the hypothetical TD task with 10 cents. Principal component analysis extracted two components: one for small amounts and short delays, and a second one for large rewards and long delays. Conclusions: Temporal reward discounting is not a uniform construct. Functional brain imaging research could shed more light on unique brain activation patterns associated with different forms of temporal reward discounting. Copyright © 2010 John Wiley & Sons, Ltd. [source]

Social discounting and delay discounting

JOURNAL OF BEHAVIORAL DECISION MAKING, Issue 1 2008
Howard Rachlin
Abstract Social discounting was measured as the amount of money a participant was willing to forgo to give a fixed amount (usually $75) to another person. In the first experiment, amount forgone was a hyperbolic function of the social distance between the giver and receiver. In the second experiment, degree of social discounting was an increasing function of reward magnitude whereas degree of delay discounting was a decreasing function of reward magnitude. In the third experiment, the shape of the function relating delayed rewards to equally valued immediate rewards for another person was predicted from individual delay and social discount functions. All in all, the studies show that the social discount function, like delay and probability discount functions, is hyperbolic in form. Copyright © 2007 John Wiley & Sons, Ltd. [source]

High-Alcohol Preferring Mice Are More Impulsive Than Low-Alcohol Preferring Mice as Measured in the Delay Discounting Task

Decision-Making Biases, Antisocial Personality, and Early-Onset Alcoholism

ALCOHOLISM, Issue 7 2000
Carlos A. Mazas
Background: Disinhibited, antisocial traits increase the risk for early-onset alcoholism. Research also suggests that decision biases which favor immediate large rewards regardless of long-term consequences may be important mechanisms associated with the biological substrates of antisocial traits. This study tested the hypothesis that early-onset alcoholism with antisocial personality (ASP) would be associated with favoring immediate larger rewards despite their being associated with long-term losses. Methods: Twenty-seven early-onset alcoholics with and without a diagnosis of ASP, eight subjects with ASP but no alcohol dependence, and 32 controls were tested on a task that manipulated the magnitude of immediate rewards and the magnitude of long-term punishments. The sample was recruited from the community via advertisements. Results: Compared with subjects without ASP, subjects with ASP favored larger immediate rewards despite long-term losses regardless of alcohol dependence; however, they learned to shift their decisions in a more advantageous direction over time. A disadvantageous decision bias also was associated with drinking greater quantities of alcohol and having a lower IQ. Conclusions: This study suggests that ASP in a young adult noninstitutionalized sample was associated with a pattern of disadvantageous decision making similar to that observed in patients with antisocial behavioral characteristics associated with lesions in the ventromedial frontal cortex. The data also suggest that this pattern of disadvantageous decision making is associated with consuming larger quantities of alcohol but not consuming alcohol more frequently. [source]

Avoidance Brings Japanese Employees What They Care About in Conflict Management: Its Functionality and "Good Member" Image

NEGOTIATION AND CONFLICT MANAGEMENT RESEARCH, Issue 2 2010
Ken-ichi Ohbuchi
Abstract Avoidance is preferred by Asian people in organizational conflicts. Even when self-assertion offers immediate rewards, it is viewed by collectivists as risky from the long-term perspective because it impairs group membership and future rewards associated with it. Instead, collectivists are concerned with being accepted by peers as "a good member (agreeable person)." We assume that avoidance in organizational conflicts is an identity strategy, by which collectivists seek to form an interdependent identity and secure future rewards. We asked 341 Japanese business employees to rate their conflicts with supervisors in terms of coping strategies and goal achievements. Consistent with our predictions, the results indicated that avoidance contributed to group harmony and interdependent identity while it hampered personal interests and fairness. The theory of the functionality of avoidance was validated, at least with collectivists, although this long-range strategy seems to depend on an individual's belief that the organization is properly managed. [source]

Transformative Knowledge Transfer Through Empowering and Paying Community Researchers

BIOTROPICA, Issue 5 2009
Stephen T. Garnett
ABSTRACT Environmental research is often conducted independently of the community in which the environment is situated, with transfer of results into policy and on-ground action occurring independently of the community's interests or aspirations. Increasingly the need for greater community involvement in the research process has been recognized. For community members, however, such engagement usually involves trade-offs. While it is often assumed that community members should participate voluntarily because they will gain from the research, any benefits from knowledge, understanding and a capacity to influence the research have to be offset against time and potential loss of unremunerated intellectual property. We argue, using case studies from tropical Australia and Africa, that a more effective means of engagement and knowledge transfer is training and remuneration of community members as coresearchers. This engagement is much more than payment for labor,it is investment in local intellectual property and requires researcher humility, power-sharing and recognition that access to research funding provides no moral or intellectual authority. Further, we argue that, for effective adoption of research results, community members need to be part of negotiated agreements on the initial nature of the research to ensure it answers questions of genuine local relevance and that local researchers have the capacity to place locally conducted research into a wider context. We argue that immediate rewards for involvement not only secure engagement but, where appropriate, are likely to lead to effective implementation of research results, enhanced local capacity and greater equity in intellectual power-sharing. [source]