WTO,Public Reason and Food Public Reasoning in the ‘Trade Conflict’ on GM-Food

Food trade is of economic importance for both developed and developing countries. Food, however, is a special commodity. Firstly, the lack of food – hunger, under-nourishment, and starvation – is one of the worlds pressing moral problems. But food is not only special because it is necessary for our survival; food is also special because it is strongly related to our social and cultural identity. Two recent transatlantic trade conflicts over food – over the use of artificial growth hormones in beef production and over the use of (modern) biotechnology in food production – show that food is a specific commodity. In these trade-conflicts, the obligations flowing from free-trade treaties collide with the cultural and social meanings of food. Current international trade agreements neglect this point and force countries to fight their case in the field of food safety science. This causes a bias in the discussion. Europes resistance towards artificial growth hormones and GM-food is not strictly science based; it is also culture based. For a fair resolution of trade-conflicts, this needs to be accommodated in international trade legislation. With the help of the notion of public reason I defend that (i) precaution with regard to scientific uncertainty, and (ii) the possibility for compulsory labelling with regard to sensitive non-nutritional properties of foodstuffs, need to be incorporated in international food trade regulations.     

The living legacy of the Harvard Pigeon Lab: quantitative analysis in the wide world

From the Harvard Pigeon Lab of the 1960s arose a behavior-analytic approach that was quantitative and rigorous, rooted in Herrnstein's matching law. Researchers modified the matching law to describe choice behavior in a variety of different settings and examined its relations with other quantitative models. Beginning in the early 1970s, researchers began using the Harvard Pigeon Lab's quantitative framework to study in the laboratory specific aspects of the world outside the laboratory. Much of this work concerned investigations of self-control-choice of a larger, more delayed reinforcer over a smaller, less delayed reinforcer. Experiments using a quantitative framework derived from the matching law have also been conducted outside the laboratory; however, these have been far less frequent. Current and future researchers will benefit the field by devising new, creative ways to investigate the matching law and related quantitative models outside the laboratory. Such research can help to demonstrate the validity of these models as basic principles of behavior, can enhance public opinion of and rewards for such research, and can stimulate further development of the Harvard Pigeon Lab's quantitative approach by using that approach with new variables.     

Analysis of response covariationamong multiple topographies of food refusal

This study examined the effects of sequentially introducing treatment across multiple topographies of food refusal. Treatment with nonremoval of the spoon produced an increase in food acceptance and a decrease in disruption, but expulsion of food increased. When expulsion was treated, packing of food increased. Finally, when packing was treated, all refusal behaviors remained low, and acceptance continued to occur at high and stable levels.     

A procedure to teach self-control to children with attention deficit hyperactivity disorder

This study examined the use of a progressive delay procedure combined with verbal mediation to teach self-control to children with attention deficit disorder. Results showed that when participants were initially given the choice between an immediate smaller reinforcer and a larger delayed reinforcer, all participants chose the smaller reinforcer. When slight delays to obtain a larger reinforcer were instated in conjunction with intervening verbal activity, all participants demonstrated self-control regardless of the content of the verbal activity.     

The effect of choice on intention-behavior consistency

Three studies were conducted with the aim of investigating whether choice of behavioral alternative increases intention-behavior consistency. In Study 1 undergraduates were asked to write and mail back an essay on a topic they either chose or were assigned. Demonstrating an effect of choice, significantly more subjects who chose an essay topic mailed back the essays. These subjects also rated their intention to write the essay as stronger, thus suggesting that the difference between choice and no choice is that the intention is self-generated. Supporting this interpretation, no differences in mail-back rates were observed in Studies 2 and 3 between a difficult and easy choice condition. Furthermore, an alternative hypothesis that choice induces implementation intentions did not receive support since independent effects were in Study 2 found of deciding when and where to write the essay and in Study 3 of making an outline of the essay.     

Choice, changing over, and reinforcement delays

In three experiments, pigeons were used to examine the independent effects of two normally confounded delays to reinforcement associated with changing between concurrently available variable-interval schedules of reinforcement. In Experiments 1 and 2, combinations of changeover-delay durations and fixed-interval travel requirements were arranged in a changeover-key procedure. The delay from a changeover-produced stimulus change to a reinforcer was varied while the delay between the last response on one alternative and a reinforcer on the other (the total obtained delay) was held constant. Changeover rates decreased as a negative power function of the total obtained delay. The delay between a changeover-produced stimulus change had a small and inconsistent effect on changeover rates. In Experiment 3, changeover delays and fixed-interval travel requirements were arranged independently. Changeover rates decreased as a negative power function of the total obtained delay despite variations in the delay from a change in stimulus conditions to a reinforcer. Periods of high-rate responding following a changeover, however, were higher near the end of the delay from a change in stimulus conditions to a reinforcer. The results of these experiments suggest that the effects of changeover delays and travel requirements primarily result from changes in the delay between a response at one alternative and a reinforcer at the other, but the pattern of responding immediately after a changeover depends on the delay from a changeover-produced change in stimulus conditions to a reinforcer.     

Signal Detection Analysis of Choice Behavior and Aging

The primary research question was whether older adults respond to the contingencies of reinforcement such that they allocate their behavior as predicted by the reinforcement contingencies and discriminative stimuli programmed by the experimenters. Six subjects, ranging in age from 62 to 74 years, participated in 15 experimental sessions. Subjects were instructed to press the F1 key when they saw a white circle, and to press the F12 key when they saw a red letter A. Responses on the F1 key were reinforced on a variable interval (VI) 30-s schedule (i.e., a VI schedule of reinforcement with 11 arithmetically spaced intervals with a mean of 30 s); F12 key responses were reinforced on a VI 60-s schedule (i.e., a VI schedule of reinforcement with 11 arithmetically spaced intervals with a mean of 60 s). Reinforcers included monetary units (10 cents) and verbal praise. Results indicated positive effects of stimulus control of behavior. Collective false alarms and miss rates represented only 0.05% of the total responses. Also, two thirds of the subjects allocated behavior consistent with the second hypothesis that a denser reinforcement schedule (i.e., the VI 30-s) would cause subjects to respond more quickly to this condition. Implications of the present results for clinical studies of Alzheimer's Disease and dementia, as well as behavior modification strategies with aging individuals, are discussed.     

The Psychological Dimension of Informed Consent: Dissonance Processes in Genetic Testing

This paper discusses the issue of the psychological dimension of informed consent. In this paper, the author proposes that informed consent is a continuous variable rather than a dichotomous one. When clients better understand their motives and actual, rather than just perceived degree of choice in pursuing a particular option in a medical setting, their level of informed consent is greater. Findings from existing literature in the field of genetic testing are examined in terms of dissonance theory. These findings suggest that testing candidates sometimes overestimate their coping skills and minimize the threat to psychological integrity that a particular genetic result may pose. Counseling directed towards realistic appraisal of degree of choice in pursuing testing is examined as an aspect of supporting informed consent and possibly reducing the potential for adverse psychological outcome in the longer term.     

A test of object permanence in a new-world monkey species,cotton top tamarins (<Emphasis Type="Italic">Saguinus oedipus</Emphasis>)

Cotton top tamarins were tested in visible and invisible displacement tasks in a method similar to that used elsewhere to test squirrel monkeys and orangutans. All subjects performed at levels significantly above chance on visible (n=8) and invisible (n=7) displacements, wherein the tasks included tests of the perseverance error, tests of memory in double and triple displacements, and "catch" trials that tested for the use of the experimenter's hand as a cue for the correct cup. Performance on all nine tasks was significantly higher than chance level selection of cups, and tasks using visible displacements generated more accurate performance than tasks using invisible displacements. Performance was not accounted for by a practice effect based on exposure to successive tasks. Results suggest that tamarins possess stage 6 object permanence capabilities, and that in a situation involving brief exposure to tasks and foraging opportunities, tracking objects' movements and responding more flexibly are abilities expressed readily by the tamarins. Electronic Publication     

A multiple-schedule evaluation of immediate and subsequent effects of fixed-time food presentation on automatically maintained mouthing

The purpose of this study was to evaluate the immediate and subsequent effects of fixed-time (FT) food presentations on mouthing. The effects of FT food presentations were analyzed within a three-component multiple schedule in which baseline conditions were implemented during the first and third components and treatment conditions were implemented during the second component. Results indicated that FT food reduced mouthing and that levels of mouthing during post-FT components were reliably lower than pre-FT components. Behavioral mechanisms responsible for treatment effects are discussed.