Pivots for pointing: visually-monitored pointing has higher arm elevations than pointing blindfolded

Observers pointing to a target viewed directly may elevate their fingertip close to the line of sight. However, pointing blindfolded, after viewing the target, they may pivot lower, from the shoulder, aligning the arm with the target as if reaching to the target. Indeed, in Experiment 1 participants elevated their arms more in visually monitored than blindfolded pointing. In Experiment 2, pointing to a visible target they elevated a short pointer more than a long one, raising its tip to the line of sight. In Experiment 3, the Experimenter aligned the participant's arm with the target. Participants judged they were pointing below a visually monitored target. In Experiment 4, participants viewing another person pointing, eyes-open or eyes-closed, judged the target was aligned with the pointing arm. In Experiment 5, participants viewed their arm and the target via a mirror and posed their arm so that it was aligned with the target. Arm elevation was higher in pointing directly.     

Empirical and Theoretical Conclusions of an Analysis of Outcomes of HIV-Prevention Interventions

ABSTRACT— Over two decades of HIV-prevention attempts have generated a most impressive ecological data set for the test of behavioral-change and persuasion theories in the domain of condom use. An analysis of this evidence has yielded five important empirical and theoretical conclusions. First, interventions are more successful at achieving immediate knowledge and motivational change than they are at achieving immediate behavioral change. Second, the immediate motivational change decays over time, whereas behavior change increases over the same period. Third, interventions that engage audiences in particular activities, such as role-playing condom use, are more effective than presentations of materials to passive audiences. Fourth, interventions consistent with the theories of reasoned action and planned behavior, with self-efficacy models, and with information-motivation and behavioral-skills models prove effective, whereas interventions designed to induce fear do not. Fifth, expert intervention facilitators are more effective than lay community members in almost all cases. When populations are unempowered, expert facilitators are particularly effective, and they are most effective if they also share the gender and ethnicity of the target audience.     

Unpacking the Unethical Gift: Gift Experience and Unethicality Assessment

This research investigates how contextual factors affect unethicality assessment of products. The research is conducted in the context of gifts and compares interpersonal gifts (IGs) and self-gifts (SGs) by examining individuals’ reactions in front of unethical gifts. Five experiments investigate how individuals assess product unethicality differently, depending on the source of the gift, being the Self or a gifter. This research employs attribution theory to explain the differences between IGs and SGs and identify psychological distance as a boundary condition for the effect.     

Focusing on gender similarities increases female students’ motivation to participate in STEM

Recent analyses highlight women's opting out of STEM fields as an important contributing factor to the gender gap in science. Therefore, it is important to identify the factors influencing women's motivation to participate in STEM. In the present study, we tested the hypothesis that the focus on differences between male and female students in STEM, even when those differences are irrelevant to the competence dimension, would decrease the motivation of women to engage in STEM. On the other hand, a belief in gender similarities would increase their motivation to get involved in STEM. We conducted three experiments among female students in STEM majors, in which we manipulated the focus on gender differences versus similarities. The results, which replicated across three studies, showed that when female students focused on similarities between men and women, they were more motivated to engage in STEM‐related activities than when they focused on gender differences. Additionally, we tested whether the gender stereotypes and a perception of gender discrimination mediated that effect but the results of these analyses were inconsistent across studies. Overall, the findings suggest that messaging directed at women in STEM, which highlights similarities between men and women could encourage them to engage in STEM but deactivation of gender stereotypes does not necessarily account for these effects.     

PARENTS AND THEIR CHILD AND THE ANALYST IN THE MIDDLE

The first part of this paper explains how the transgenerational mandate influences the mental activity of the child. When a child acts the denied suffering of the parental couple, the analyst risks being imprisoned by the transgenerational mandate. Frequently the analyst is unconsciously asked by the parents to cure without curing because the child's psychological birth, still in the making, threatens the defensive equilibrium of the parents. The analyst is thus caught between the parents and the child and must find his/her own way forward in order to free the child from the burden of the mandate. In the second part of the paper, an analysis of a 5-year-old child is presented. The author shows how a transgenerational mandate may hold a traumatic potential because it can impair heavily the child's capacity to think. The author also describes the way in which she works with the parents and how she manages the setting and the style of the interpretation. She insists in particular on the need to sustain the child's perceptions in order to gradually allow the child to take roots in his/her experiences and therefore develop his/her own identity.     

The Greek Roots of the Ad Hominem-Argument

In this paper, I discuss the current thesis on the modern origin of the ad hominem-argument, by analysing the Aristotelian conception of it. In view of the recent accounts which consider it a relative argument, i.e., acceptable only by the particular respondent, I maintain that there are two Aristotelian versions of the ad hominem, that have identifiable characteristics, and both correspond to the standard variants distinguished in the contemporary treatments of the famous informal fallacy: the abusive and the circumstancial or tu quoque types. I propose to reconstruct the two Aristotelian versions (see sections 1 and 2), which have been recognized again in the ninteenth century (sec. 3). Finally, I examine whether or not it was considered as a fallacious dialogue device by Aristotle and by A. Schopenhauer (sec. 4).     

Observation and analysis of large-scale human motion

Many team sports include complex human movement, which can be observed at different levels of detail. Some aspects of the athlete's motion can be studied in detail using commercially available high-speed, high-accuracy biomechanical measurement systems. However, due to their limitations, these devices are not appropriate for studying large-scale motion during a game (for example, the motion of a player running across the entire playing field). We describe an alternative approach to studying such large-scale motion, and present a video-based, computer-aided system, developed specifically for the purpose of acquiring large-scale motion data. The baseline of our approach consists of sacrificing much of the spatial accuracy and temporal resolution of widely used biomechanical measurement systems, to obtain data on human movement that span large areas and long intervals of time. Data can be obtained for each of the observed athletes with reasonable amount of operator work. The system was developed using the recordings of a handball match. Several field tests were performed to assess measurement error, including comparison to one of the widely available biomechanical measurement systems. With the help of the system presented, we could obtain position data for all 14 handball players on a 40 x 20 m large court with RMS error better than 0.6 m, covering 1 h of action. Several results, obtained during the handball match study are presented, in order to highlight the importance of large-scale motion acquisition.