TEACHING SEVERELY MULTIHANDICAPPED STUDENTS TO PUT ON THEIR OWN HEARING AIDS

Two experiments were conducted with six severely multihandicapped students with hearing impairments to: (a) train the six students to put on their own hearing aids independently, and (b) provide an empirical evaluation of a comprehensive instructional program for putting on a hearing aid by assessing acquisition, maintenance, and generalization of that skill across environments. All six students acquired the skill rapidly, with two students requiring remedial training on one step of the program. Because for two of the original three students the newly learned skill failed initially to generalize to other environments, a second experiment was initiated to assess generalization across environments as well as to replicate the efficiency of the acquisition program. When a variation of the multiple-probe baseline technique was used, the behavior of three additional students generalized to other settings without direct training in those settings.     

THE USE OF SELF-MODELING TO IMPROVE THE SWIMMING PERFORMANCE OF SPINA BIFIDA CHILDREN

The use of edited videotape replay (which showed only “positive” behaviors) to improve the water skills of three spina bifida children, aged 5 to 10 years was examined. A multiple baseline across subjects design was used, and behavioral changes were observed to occur in close association with intervention. One child was given successive reapplications of videotaped self-modeling with continuing improvements. It appears that a useful practical technique has been developed.     

Experimentation on humans and nonhumans

In this article, I argue that it is wrong to conduct any experiment on a nonhuman which we would regard as immoral were it to be conducted on a human, because such experimentation violates the basic moral rights of sentient beings. After distinguishing the rights approach from the utilitarian approach, I delineate basic concepts. I then raise the classic “argument from marginal cases” against those who support experimentation on nonhumans but not on humans. After next replying to six important objections against that argument, I contend that moral agents are logically required to accord basic moral rights to every sentient being. I conclude by providing criteria for distinguishing ethical from unethical experimentation.     

Number-word sequence skill and arithmetic performance

In two studies, the role of the number‐word sequence skill for arithmetic performance was investigated. In the first, children between 4 and 8 years of age were asked to count forward and backward on the number‐word sequence and to solve arithmetic problems followed by post‐solution interviews about solution procedures. The results demonstrated that the number‐word sequence skill predicted both number of problems solved and strategy to solve the problems. In Study 2 it was found that solving doubles (e.g., 2 + 2 = ?) problems served as a link between the number‐word sequence skill and the number of arithmetic problems solved. The findings suggest that counting on the number‐word sequence may be an early solution procedure and that, with increasing counting skill, the child may detect regularities in the number‐word sequence that can be used to form new and more accurate strategies for solving arithmetic problems.     

Reconstructing and Evaluating Genetic Arguments in Judicial Decisions

Although the genetic argument is a widely used interpretative argument, what it amounts to does not seem to be altogether clear. Basic forms of the genetic argument that are distinguished are often too rough to provide an adequate basis for the evaluation of an interpretative decision. In this article I attempt to provide a more detailed analysis of the genetic argument by making use of pragma-dialectical insights. The analysis clarifies the character and the structure of different forms of the genetic argument and thus the elements that are relevant for the evaluation of the argument.* * An earlier version of this paper was presented at 21st IVR World Congress (Lund, 2003).     

Legal Progress Through Pragma-Dialectics? Prospects Beyond Analogy and E Contrario

Pragma-dialectical approaches to legal argumentation seem to be rather different from traditional approaches appealing to standards of propositional logic. Pragma-dialectical analysis of arguments by analogy and e contrario seem to fall foul to the rigors of logical analysis, in which problems or even concepts of analogy and e contrario seem to disappear. The brunt of both types of special legal argumentation appears to be borne by often implicit general principles and an appeal to the system of the law as a whole. Still, pragma-dialectics and logical analysis of legal argument are best seen as fruitfully supplementing each other in ongoing research of ever evolving legal argument.     

The Vicious Circle Theorem – a Graph-Theoretical Analysis of Dialectical Structures

This article sets up a graph-theoretical framework for argumentation-analysis (dialectical analysis) which expands classical argument-analysis. Within this framework, a main theorem on the existence of inconsistencies in debates is stated and proved: the vicious circle theorem. Subsequently, two corollaries which generalize the main theorem are derived. Finally, a brief outlook is given on further expansions and possible applications of the developed framework.     

That looks easy! Evidence against the benefits of an easier criterion of success for enhancing motor learning

OPTIMAL theory predicts providing learners with a relatively easier criterion of success during practice enhances motor learning through increased self-efficacy, perceptions of competence, and intrinsic motivation. However, mixed results in the literature suggest this enhancement effect may be moderated by the number of successes achieved by learners practicing with the difficult criterion. To investigate this possibility, we manipulated quantity of practice to affect the absolute number of successes achieved by learners practicing with different success criteria. Eighty participants were divided into four groups and performed 50 or 100 trials of a mini-shuffleboard task. Groups practiced with either a large or a small zone of success surrounding the target. Learning was assessed 24 h after acquisition with retention and transfer tests. In terms of endpoint accuracy and precision, there were no learning or practice performance benefits of practicing with an easier criterion of success, regardless of the number of trials. This absence of a criterion of success effect was despite the efficacy of our manipulation in increasing the number of trials stopping within the zone of success, self-efficacy, perceptions of competence, and, for participants with 100 trials, intrinsic motivation. An equivalence test indicated that the effect of criterion of success was small, if existent. Moreover, at the individual level, intrinsic motivation did not predict posttest or acquisition performance. There were no benefits of easing the criterion of success on pressure, effort, accrual of explicit knowledge, or conscious processing. These data challenge key tenets of OPTIMAL theory and question the efficacy of easing criterion of success for motor learning.     

启动效应与技能学习相互关系的实验研究

利用字母光点和追踪旋转任务,分别对３１名和３２名大学生进行启动和技能学习相互关系的研究。结果发现：在两种任务内,被试的启动和技能学习存在相互独立的关系;在追踪旋转任务中,练习的频率对启动和技能学习都会产生影响。     

THE WEAK ANTHROPIC PRINCIPLE AND THE DESIGN ARGUMENT

Abstract. The design argument for God's existence was critically assessed when in the growth of modern science the cognitive value of ideological categories was called into question. In recent discussions dealing with anthropic principles there has appeared a new version of the design argument, in which cosmic design is described without the use of ideological terms. The weak anthropic principle (WAP), a most critical version of all these principles, describes the fine-tuning of physical parameters necessary lo the genesis of carbon-based life. It defines no physical mechanisms of the observed coordination between physical parameters. If in a future unified physical theory such mechanisms are discovered, the weak anthropic principle should be replaced by the strong anthropic principle, which asserts the physical necessity of fine-tuning. Neither of the versions can be regarded as physically trivial unless one accepts strong assumptions of the existence of parallel universes. Consequently, a new version of the philosophical design argument can be developed on the basis of the weak anthropic principle.