Long-term semantic memory versus contextual memory in unconscious number processing

Subjects classified visible 2-digit numbers as larger or smaller than 55. Target numbers were preceded by masked 2-digit primes that were either congruent (same relation to 55) or incongruent. Experiments 1 and 2 showed prime congruency effects for stimuli never included in the set of classified visible targets, indicating subliminal priming based on long-term semantic memory. Experiments 2 and 3 went further to demonstrate paradoxical unconscious priming effects resulting from task context. For example, after repeated practice classifying 73 as larger than 55, the novel masked prime 37 paradoxically facilitated the "larger" response. In these experiments task context could induce subjects to unconsciously process only the leftmost masked prime digit, only the rightmost digit, or both independently. Across 3 experiments, subliminal priming was governed by both task context and long-term semantic memory.     

‘Coordinative definition’ and Reichenbach''s semantic framework: A reassessment

My greatest debt is to Prof. Hilary Putnam, without whose inspiration and encouragement this paper would not have been written. Thanks are also due to Prof. Michael Friedman for detailed and helpful comments on an earlier version, and to two anonymous referees. This paper is based in part on research conducted while supported under a National Science Foundation Graduate Fellowship.     

BEHAVIORAL TREATMENT OF CAFFEINISM: REDUCING EXCESSIVE COFFEE DRINKING

Excessive coffee drinking can have deleterious effects because of the large amounts of caffeine that are ingested. Caffeine is thought to be addicting, and prolonged and excessive use can lead to caffeinism, a condition that has serious behavioral and physiological side effects. The present study developed and evaluated a treatment program to reduce excessive daily coffee drinking to moderate and presumably safer levels. Three habitual coffee drinkers received individualized changing criterion programs that systematically and gradually reduced their daily caffeine intake. The coffee drinkers were required to self-monitor and plot their daily intake of caffeine. They received monetary prizes for not exceeding the treatment phase criteria and forfeited a portion of their pretreatment deposit when they did. Their coffee drinking decreased from almost nine cups per day (over 1100 mg of caffeine) during baseline to less than three cups per day (less than 343 mg) at the end of treatment or a reduction of 69%. The treatment effect was maintained during a 10-month follow-up, averaging a 67% reduction from baseline. The program appears to be a reasonable method of reducing and then maintaining daily caffeine intake at less harmful levels.     

Low-ball and compliance to a request: an application in a field setting

The low-ball refers to a compliance technique in which a demand of someone to agree to a request is followed by telling the person the real cost of the request. The number of people who maintain their first decision is larger than the number in the condition in which the real cost of the request is stated prior to the initial compliance. Researches in this paradigm traditionally included a request addressed by a professor to students but was never tested between strangers. So, an experiment was carried out in which people were solicited to keep a dog (8 kg) on a lead until a male confederate returned from a visit to someone in a hospital. In low-ball condition, the confederate told the subject who agreed to the request that it would take 30 min., whereas in the control condition the confederate gave this information when stating his request. Analysis showed that low-ball technique leads people to maintain their first decision.     

PRISONER'S MISTRUST

The standard, non‐repeated prisoner's dilemma poses no true dilemma about rationality, we argue. What the prisoners ought rationally to do, unless they are selfless, depends on the relationship of trust that they have or lack with one another. This helps to diffuse the apparent conflict between individual and collective rationality. If the prisoners have reason to trust one another, pursuing a joint strategy would be rational for them. In the absence of trust, pursuing an individual strategy would be rational. The solution that is supposed to be puzzling – because each prisoner confessing is worse for both than the alternative on which both remain silent – is simply the rational solution for persons who have no reason to trust one another. Philosophers have been misled by the apparent availability of the better alternative. Collective rationality is not relevant for persons who do not stand in a trusting relationship. When they do, there is no unresolved conflict between their individual and collective points of view. ¹ 1 We thank Virginia Held and Michael W. Klein for helpful discussion and the Edmond J. Safra Foundation Center for Ethics, Harvard University for generous fellowship support.
     

Visual memory and visual perception: when memory improves visual search

This study examined the relationship between memory and perception in order to identify the influence of a memory dimension in perceptual processing. Our aim was to determine whether the variation of typical size between items (i.e., the size in real life) affects visual search. In two experiments, the congruency between typical size difference and perceptual size difference was manipulated in a visual search task. We observed that congruency between the typical and perceptual size differences decreased reaction times in the visual search (Exp. 1), and noncongruency between these two differences increased reaction times in the visual search (Exp. 2). We argue that these results highlight that memory and perception share some resources and reveal the intervention of typical size difference on the computation of the perceptual size difference.     

« Contexte évaluatif,règles d’équité et d’égalité. Une approche stratégique de la justice distributive. »

This article must be considered within the framework of research on distributive justice in the organisational context (Adams, 1965; Deutsch, 1975; Colquitt and Jackson, 2002). The aim is to propose an analysis from a political point of view of the orientation towards equity and equality rules. We take as a starting point the model of political decision in the organisational context by Murphy and Cleveland (1995). The political approach postulates that one cannot pertinently give an account of the managers’ decision modes without locating them in their daily context of human relations management, and their management strategy. We will examine the links between the context of immediate management and the managers’ choices for equity or equality. The results of two studies will be presented. They tend to legitimate the relevance of this approach.     

Pervasiveness of framing effects among physicians and medical students

Researchers have been documenting the influence of framing upon decision making for more than two decades; decisions appear to change in response to superficial changes in the presentation of possible outcomes. Several studies of medical decision making have revealed; for instance, that clinical decisions differ when options are presented as gains (survival rates) rather than losses (mortality rates). However, most studies of framing effects in the medical domain have utilized a very limited number of clinical problems that have not allowed an adequate test of the prevalence of the phenomena. To extend previous studies, we presented three groups of subjects (experienced internists, residents, and third-year medical students) with booklets containing twelve hypothetical medical cases. Half of the subjects received gain versions and half received loss versions of the same cases. Chi-square analyses revealed that framing did not influence any of the decisions of medical students and influenced the decisions of residents and experienced physicians on only two of the clinical problems (the same two problems). It appears that the prevalence of framing effects in the clinical domain may be limited.