Task switching under predictable and unpredictable circumstances

Task switching was examined under predictable and unpredictable circumstances. In the first two experiments (in predictable conditions), the upcoming task was determined by the trial sequence. In unpredictable conditions, this task was signaled by the stimulus. Under speeded conditions, participants had to judge either the parity of a digit or the vowel/consonant nature of a letter. On bivalent trials, a digit and a letter were presented. On univalent trials, a task-relevant character occurred alongside a task-irrelevant character (e.g., "&"). Task-switching costs were found, and response times were generally slower on bivalent than on univalent trials. This crosstalk effect was reduced when a task repetition was expected. In the final experiment, trial predictability was defined according to whether a task precue was presented prior to or concurrently with the trial stimulus. Contrasting patterns of crosstalk effects were obtained and are discussed in terms of exogenous and endogenous factors that affect task switching.     

The dark side of visual awareness in sport: Inattentional blindness in a real-world basketball task

Most research in the field of decision making in sports has focused on the bright side of visual attention and has not taken the dark side of visual awareness into account. Understanding the costs of such inattention should be complementary to the study of how attention facilitates perception. In the present study, we provide evidence for the existence of inattentional blindness (IB) in a real-world basketball setting among adults (Experiment 1). In Experiment 2, we found that players with hardly any basketball experience were more likely to experience IB in a real-world basketball setting, as compared with experienced athletes. Improving the ecological validity of the setting by enhancing the perception-action coupling (Experiment 3) and increasing task difficulty (Experiment 4) did not appear to affect the occurrence of IB among experienced athletes. IB can be considered a limitation of the visual system, but it also highlights a critical aspect of visual processing, which allows us to remain focused on the important aspects of the world. But as is shown in the present experiments, it is possible to induce an attentional set—for example, by sport-specific instructions—that leads to players’ missing important game-relevant information.     

Deception Within Adolescent Sexual Conduct

Deception is presented as a “design to defeat a design” (Thompson 1986, p 64) where one actor purposefully changes the environment with the intention on generating a less adaptive response from another actor. The shared context combined with the indeterminacy of meanings makes deception not only possible, but also an important strategy for adaptation. In this regard not all deception temporarily causes individuals to reorganize their meaning making hierarchy around the changes made by the other party. Different uses of deceptions are explored with regards to adolescent sexual conduct, as their complex and quickly changing representations necessitate social recognition and adaptation.     

Making Life: A Comment on ‘Playing God in Frankenstein’s Footsteps: Synthetic Biology and the Meaning of Life’ by Henk van den Belt (2009)

“Van den Belt recently examined the notion that synthetic biology and the creation of ‘artificial’ organisms are examples of scientists ‘playing God’. Here I respond to some of the issues he raises, including some of his comments on my previous discussions of the value of the term ‘life’ as a scientific concept.”     

Can the Created Co‐Creator Be Lutheran?A Response to Svend Andersen

Abstract : The author responds to Svend Andersen's article in this journal 43: 4(Winter 2004) 312–23, “Can Bioethics Be Lutheran?” in which Andersen criticizes the concept of humans as created co‐creators, particularly because it asserts an equality between God and humans; he recommends in its place Luther's concept of humans as God's co‐operators or co‐workers. It is argued here that the created co‐creator meets the critique offered. The concept can be both theologized and secularized, which Andersen overlooks. The concept can be integrated into the Christian theology of divine creation, but it introduces irony into theological formulation which is necessary, and which the idea of “God's co‐operators” fails to do. Finally, the chief and most difficult theological issues are framed: Why does God create co‐creators? and How can they receive grace within a Lutheran framework?     

Not all errors are created equal: metacognition and changing answers on multiple-choice tests.

Two experiments investigated the role of metacognition in changing answers to multiple-choice, general-knowledge questions. Both experiments revealed qualitatively different errors produced by speeded responding versus confusability amongst the alternatives; revision completely corrected the former, but had no effect on the latter. Experiment 2 also demonstrated that a pretest, designed to make participants' actual experience with answer changing either positive or negative, affected the tendency to correct errors. However, this effect was not apparent in the proportion of correct responses; it was only discovered when the metacognitive component to answer changing was isolated with a Type 2 signal-detection measure of discrimination. Overall, the results suggest that future research on answer changing should more closely consider the metacognitive factors underlying answer changing, using Type 2 signal-detection theory to isolate these aspects of performance.     

Was the Northern Ireland Conflict Religious?

This article considers the claim that the conflict in Northern Ireland was irreducibly religious. After a brief account of the history of the Northern Ireland conflict, the different arguments and counter arguments that bear on the role of religion in causing and sustaining the conflict are considered. An examination of the relationship of Islam to terrorism and the events of 9/11 provides a comparative perspective that is used both to identify similarities and differences between the situation in Ireland and elsewhere and to distinguish and discriminate between different ways in which religious sanction is given to violence. The implications of our findings are then explored with regard to our understanding of the Northern Ireland conflict and with regard to our understanding of the nature of religion more generally.     

抑制性控制在幼儿执行功能与心理理论中的作用

将执行功能任务和心理理论任务中的共同成分——抑制性控制区分为3个不同的难度水平,从而构成心理理论任务（错误信念）的3个变式A1、A2、A3和执行功能任务（白天/黑夜）的3个变式B1、B2、B3。实验1以48名4岁幼儿为被试,探讨对两类任务中各自的3个变式所包含的抑制性控制的难度区分的适当性,结果表明幼儿在两类任务中各自的3个变式上的正确率差异显著,说明其抑制性控制的确表现出了高、中、低3个不同的难度水平;实验2根据实验1所设计的两类任务,以144名3~6岁幼儿为被试,探讨了不同抑制性控制的难度水平在幼儿执行功能和心理理论的相关中的作用,结果表明抑制性控制的难度水平是影响幼儿执行功能与心理理论的相关的一个重要因素。