Moving farther but faster: an exception to Fitts's law

Fitts's law holds that movement time (MT) increases with longer distances. Here we report a violation of this law: When the target appears in a structured, linear display with placeholders indicating the possible target locations, MT to the most distant target is not longer than MT to the second most distant target, but rather tends to be shorter. Furthermore, the presence of placeholders attenuates the range effect that occurs in the absence of placeholders. These findings suggest that Fitts's law may be limited to egocentric visuomotor action, and that the visual control of hand movements may use allocentric, in addition to egocentric, spatial information.     

Selective exposure: The impact of framing information search instructions as gains and losses

Previous research has found that people prefer information that supports rather than conflicts with their decisions (selective exposure). In the present paper, we investigated whether selective exposure was influenced by the method of information collection. Based on Prospect Theory we hypothesized that the method of selection (MOS), where simply selected pieces of information are considered, would lead to a higher selective exposure compared to the method of elimination (MOE), where pieces of information are rejected and the remaining pieces of information are considered. In fact, we found that participants collected information more selectively when they were instructed to use the MOS compared to the MOE. Copyright © 2009 John Wiley & Sons, Ltd.     

Psychological effects of risk glorification in the media: Towards an integrative view

Media contents that glorify risk-taking (e.g., video games that simulate illegal street racing, TV depictions of dangerous extreme sports or stunts) are becoming increasingly popular. Theory and research suggest that risk glorification is associated with risk-taking among the audience. Until recently the evidence was limited in three ways: First, most studies, being correlational, did not permit clear causal inferences. Second, we did not know the strength of the effect of different types of media and different types of risk-taking outcomes. Third, early research did little to isolate the underlying psychological processes that mediate the pernicious effects of risk glorifying media formats. In order to address these open questions we review the results of an experimental programme of research and the findings of a comprehensive meta-analysis. The main findings are that (a) the risky media contents do indeed have causal force; (b) according to our meta-analysis active participation in risk glorifying media interfaces has a larger effect than passive consumption; (c) psychological processes include the priming of risk-related constructs, effects of risk-positive situational heuristic cues, perceived social norms, personal risk habituation, and changes in the recipient's self-concept. To integrate these findings we propose a theoretical framework derived from broad-range socio-cognitive models. We conclude with a discussion of possible directions for future research.     

Selective exposure among advisors: the impact of impression motivation

Audience confirmation bias (ACB) refers to the extent to which people prefer information supporting (vs. conflicting with) their audience's views. In two studies, we showed that advisors shifted their ACB toward the needs of their advisees (i.e., audience): When advisors were led to believe that their advisees wanted to defend their views, the ACB was higher compared with when advisees were open minded for critique. Study 2 indicated that this pattern occurred because advisors wanted to have a pleasant interaction with their advisees (impression motivation): Whereas impression‐motivated advisors exhibited a stronger ACB when they were asked to give advice to a defensive (vs. open‐minded) advisee, accuracy‐motivated advisors showed a balanced ACB, regardless of their advisee's needs.     

A multitrait–multimethod study of assessment instruments for complex problem solving

Recently published studies on Complex Problem Solving (CPS) suggest that assessments of CPS using multiple complex systems are only moderately related to tests of classical cognitive abilities. Further, CPS assessments show incremental validity beyond tests of other cognitive abilities when predicting relevant outcomes. However, these empirical accounts have relied on single CPS assessment instruments. We do not know whether these findings will generalize to the construct level across different CPS assessment instruments. To answer this question, we tested a sample of N = 339 German university students who completed three CPS assessment instruments based on multiple complex systems (MicroDYN, the Genetics Lab, and MicroFIN) and the matrices subtest of the Intelligence Structure Test as measure of reasoning. Students further reported their school grades. Analyses including latent multitrait–multimethod models provided support for the conceptualization of CPS as a complex cognitive ability. Results indicated that different CPS assessment instruments showed sufficient convergent validity (with a consistency mostly between .50 and .60). In addition, we found evidence for the divergent validity of CPS from reasoning (reasoning predicted two CPS facets, knowledge and control, β_KNOW = .49 and β_CON = .53, respectively). In the prediction of academic achievement, CPS explained variance in natural science grades after we controlled for reasoning (β_CPS = .22), whereas social science grades were not predicted. Our findings suggest that the validity of CPS generalizes across different measurement instruments.     

UNFOUNDED FEARS,INFLATED HOPES,PASSIONATE MEMORIES: JEWISH SELF-DEFENCE IN 1960s ARGENTINA

In late 1963, the Argentine Foreign Ministry expressed its concern to Israeli diplomats about several matters “that might disturb relations between the two countries.” Specifically, it referred to “military training” that Jewish youth were receiving in camps in the province of Buenos Aires under the supervision of Israeli instructors. The Argentine authorities' concern was caused by the formation of Jewish self-defence groups in the Argentine capital determined to confront the provocations of anti-Semitic, nationalist right-wing bullies. Based on both diplomatic documents and a series of interviews with former members of Jewish self-defence groups, this article analyses the establishment, structure, recruitment methods, training and activities of these organizations. Our main argument is that the concern of Argentine authorities was exaggerated, as well as were the fears of Jewish-Argentines of a possible pogrom, following the kidnapping of Nazi war criminal Adolf Eichmann in Argentina.     

Childhood Maltreatment and PTSD: Spiritual Well-Being and Intimate Partner Violence as Mediators

Childhood maltreatment places individuals, including African American women who are undereducated and economically disadvantaged, at risk for developing posttraumatic stress disorder (PTSD) symptoms. Participants were 192 African American women with a history in the prior year of both a suicide attempt and intimate partner violence (IPV) exposure. They were recruited from a public hospital that provides medical and mental health treatment to mostly low-income patients. A simple mediator model was used to examine if (a) existential well-being (sense of purpose) or religious well-being (relationship with God) mediated the link between childhood maltreatment and adult PTSD symptoms. Sequential multiple mediator models determined if physical and nonphysical IPV enhanced our understanding of the mediational association among the aforementioned variables. Findings suggest that existential well-being mediated the association between childhood maltreatment and adult PTSD symptoms in a simple mediator model, and existential well-being and recent nonphysical IPV served as sequential multiple mediators of this link. However, religious well-being and physical IPV were not significant mediators. Findings underscore the importance of enhancing existential well-being in the treatment of suicidal African American women with a history of childhood maltreatment and IPV.     

Abortion and Ownership

I explore two thought-experiments in Judith Jarvis Thomson’s important article, “A Defense of Abortion”: the violinist example and the people-seeds example. I argue (contra Thomson) that you have a moral duty not to unplug yourself from the violinist and also a moral duty not to destroy a people-seed that has landed in your sofa. Nevertheless, I also argue that there are crucial differences between the thought-experiments and the contexts of pregnancy due to rape or to contraceptive failure. In virtue of these differences, it would not follow from my conclusions about the violinist and people-seeds cases that abortion would not be permissible in a case of rape or in a case of voluntary intercourse with contraceptive failure.     

Bogus Mystery about Linguistic Competence

The paper considers a version of the problem of linguistic creativity obtained by interpreting attributions of ordinary semantic knowledge as attributions of practical competencies with expressions. The paper explains how to cope with this version of the problem without invoking either compositional theories of meaning or the notion of `tacit knowledge' (of such theories) that has led to unnecessary puzzlement. The central idea is to show that the core assumption used to raise the problem is false. To render precise argument possible, the paper first identifies and removes some relevant semantic indeterminacy in philosophical talk of `semantic knowledge' and `information'. This yields rules for attributing the two to human speakers and information-processors, respectively. The paper then shows, first, that ordinary speakers qualify as possessing all along an other than finite and definite stock of semantic knowledge and, second, that a very simple information-processor running a procedural semantics qualifies as possessing an analogous stock of semantic information. The second result is used to bring out that the first is neither unduly impressive nor particularly puzzling.