Properties of the size–weight illusion as shown by lines of subjective equality

We studied the size–weight illusion through comparative judgments. The experiment had two direct aims: to verify whether the relative contribution of size to apparent heaviness can differ for different stimulus sets, and to verify whether that contribution can differ for different methods of comparing two objects (consecutive vs. simultaneous weighing). Thirty university students participated. Results show that the relative contribution of size depends on stimulus set, but is independent of the method used for comparing objects. The first finding implies that a linear model cannot describe the integration of size and weight information in the illusion; the second finding is evidence for the low-level character of the integration process.     

Interest and Expertise Moderate the Relationship between Right‐Wing Attitudes,Ideological Self‐Placement and Voting

Previous research has suggested that the association between right‐wing authoritarianism (RWA) and social dominance orientation (SDO) is moderated by political interest and involvement. It is here hypothesized that interest also strengthens the association of authoritarianism with political self‐placement and that higher levels of interest in politics shape voting choices that are more strongly associated with authoritarianism. Authoritarianism was defined as a second‐order factor reflecting onto SDO and RWA in a structural equation modelling approach. In Study 1 (two samples, total N = 873), interest was found to moderate the impact of authoritarianism, as hypothesized. In Study 2 (N = 721), a higher order interaction involving interest and political expertise was detected. These results were obtained with different measures and in different electoral campaigns. The motivational and cognitive underpinnings of the moderating effects are discussed. Copyright © 2012 European Association of Personality Psychology.     

Quality of Life,Anxiety and Depression in Soft Tissue Sarcomas as Compared to More Common Tumours: An Observational Study

The aim of this study is to compare the quality of life and the levels of anxiety and depression in a relatively large group of subjects undergoing chemotherapy for soft tissue sarcoma and a control group of subjects undergoing chemotherapy for the most common types of cancer. 56 soft tissue sarcoma affected patients and 56 patients with common tumours, homogeneous in regards to stages of disease and sociodemographic characteristics, were enrolled in two oncological centres in Turin, Italy. Quality of life was assessed by Functional Assessment of Cancer Therapy-General and anxiety and depression by Hospital Anxiety and Depression Scale. All patients had ongoing chemotherapy. The comparison between the two groups shows no difference in either quality of life or in anxiety and depression. There are instead gender differences, since females in the group of common tumours show higher levels of anxiety in comparison to those affected by sarcomas, while males show, at a lower degree, the opposite trend. This study suggest that levels of Quality of Life, anxiety and depression are similar in rare and common tumours. The majority of patients are able to cope with the disease in an adaptive manner. However, for some patients the disease poses a threat to their physical and mental integrity; psychological support of these patients may reduce the development of significant morbidity and help patients to better manage the course of the disease and the effects of the treatment.     

Dimensions of Music Improvisation

This article reports research employing a quantitative approach to investigating the specific cognitive processes adopted and musical abilities required during musical improvisation. Two questionnaires were used: the Improvisation Processes Questionnaire and the Improvisation Abilities Questionnaire. Participants were 76 adult musicians, each of them with at least two year's improvisation experience. Factor analysis extracted five dimensions for the Improvisation Processes Questionnaire (anticipation, emotive communication, flow, feedback and use of repertoire) and two dimensions for the Improvisation Abilities Questionnaire (musical practice and basic skills). Data were subjected to ANOVA for each of the 5 + 2 factors, considering the influence of three concurrent variables (instrument played, being or not being skilled at several instruments and kind of preferred music for performances). Results revealed a significant interaction between instrument played and the dimension basic skills, and between being or not being skilled at several instruments and the dimension flow. Significant Pearson correlations were found between flow and anticipation, between flow and musical practice, between anticipation and basic skills, between repertoire and emotive communication, between repertoire and feedback, between musical practice and basic skills. The interactions between the factors and the importance of the dimensions are discussed considering also how an improviser can improve performance levels.     

On the role of simplicity in science

Simple assumptions represent a decisive reason to prefer one theory to another in everyday scientific praxis. But this praxis has little philosophical justification, since there exist many notions of simplicity, and those that can be defined precisely strongly depend on the language in which the theory is formulated. The language dependence is a natural feature—to some extent—but it is also believed to be a fatal problem, because, according to a common general argument, the simplicity of a theory is always trivial in a suitably chosen language. But, this trivialization argument is typically either applied to toy-models of scientific theories or applied with little regard for the empirical content of the theory. This paper shows that the trivialization argument fails, when one considers realistic theories and requires their empirical content to be preserved. In fact, the concepts that enable a very simple formulation, are not necessarily measurable, in general. Moreover, the inspection of a theory describing a chaotic billiard shows that precisely those concepts that naturally make the theory extremely simple are provably not measurable. This suggests that—whenever a theory possesses sufficiently complex consequences—the constraint of measurability prevents too simple formulations in any language. This explains why the scientists often regard their assessments of simplicity as largely unambiguous. In order to reveal a cultural bias in the scientists’ assessment, one should explicitly identify different characterizations of simplicity of the assumptions that lead to different theory selections. General arguments are not sufficient.     

The Implicit and Explicit Effects of Negative Political Campaigns: Is the Source Really Blamed?

Despite the widespread use of negative campaigns, research has not yet provided unambiguous conclusions about their effects. So far studies, however, have mainly focused on very explicit measures. The main goal of the present work was to explore the effects of different types of negative campaigns on both implicit and explicit attitudes, as well as in relation to two basic dimensions of social perception, namely competence and warmth. Across a series of three studies, we basically showed that not all negative campaigns lead to the same consequences. Specifically, especially personal attacks toward the opposing candidate may backfire at the explicit level. More interestingly, at an implicit level, the reliance on negative messages was associated with more negative spontaneous affective responses toward the source, but also with a spontaneous conformity to such a source. Overall, it appeared that negative messages decreased the perceived warmth of the source while simultaneously increasing the perceived competence. Results are discussed by focusing on the importance of implicit measures in political psychology and on the crucial role of perceived competence.     

Intuitive understanding of the relation between velocities and masses in simulated collisions

The participants in our experiments were asked to judge whether simulated horizontal collisions appeared to be “natural” or “unnatural”. We manipulated the implied masses and the velocity ratio of two colliding objects. Implied masses were varied through manipulations of the objects' simulated materials (Experiment 1) and sizes (Experiments 2 and 3). For each participant, we determined the interval of velocity ratios that produced “natural” responses most of the time and evaluated how this interval varied as a function of implied masses. The results revealed a fair degree of consistency between predictions of Newtonian mechanics and the participants' responses; this consistency was greater when the implied masses of the colliding objects were varied through manipulations of the simulated materials. Overall, the results support the hypothesis that the cognitive system can integrate multiple sources of stimulus information, enabling individuals to understand multidimensional mechanical events.     

“Avoiding or approaching eyes”? Introversion/extraversion affects the gaze-cueing effect

We investigated whether the extra-/introversion personality dimension can influence processing of others’ eye gaze direction and emotional facial expression during a target detection task. On the basis of previous evidence showing that self-reported trait anxiety can affect gaze-cueing with emotional faces, we also verified whether trait anxiety can modulate the influence of intro-/extraversion on behavioral performance. Fearful, happy, angry or neutral faces, with either direct or averted gaze, were presented before the target appeared in spatial locations congruent or incongruent with stimuli’s eye gaze direction. Results showed a significant influence of intra-/extraversion dimension on gaze-cueing effect for angry, happy, and neutral faces with averted gaze. Introverts did not show the gaze congruency effect when viewing angry expressions, but did so with happy and neutral faces; extraverts showed the opposite pattern. Importantly, the influence of intro-/extraversion on gaze-cueing was not mediated by trait anxiety. These findings demonstrated that personality differences can shape processing of interactions between relevant social signals.