ASTEF: A simple tool for examining fixations

In human factors and ergonomics research, the analysis of eye movements has gained popularity as a method for obtaining information concerning the operator's cognitive strategies and for drawing inferences about the cognitive state of an individual. For example, recent studies have shown that the distribution of eye fixations is sensitive to variations in mental workload---dispersed when workload is high, and clustered when workload is low. Spatial statistics algorithms can be used to obtain information about the type of distribution and can be applied over fixations recorded during small epochs of time to assess online changes in the level of mental load experienced by the individuals. In order to ease the computation of the statistical index and to encourage research on the spatial properties of visual scanning, A Simple Tool for Examining Fixations has been developed. The software application implements functions for fixation visualization, management, and analysis, and includes a tool for fixation identification from raw gaze point data. Updated information can be obtained online at www.astef.info, where the installation package is freely downloadable.     

Gender effects among undergraduates relating to suicide risk, impulsivity, aggression and self-efficacy

The present study investigated the association of impulsivity, aggression and self-efficacy with protective factors against suicide. The study population consisted of 300 Italian university students (141 males, 159 females); mean age 24.2 (SD = 3.01). Participants were assessed by means of the Reasons for Living Inventory, the Aggression Questionnaire, the Barratt Impulsiveness Scale, and the General Self-Efficacy Scale. Correlations between reasons for living and aggression and impulsivity scores were weak. However, for those individuals with high self-efficacy, aggression and impulsivity were associated with stronger reasons for living. These results support the possibility that increasing general self-efficacy could be a useful target for interventions directed toward suicide prevention in individuals with problems in emotional control.     

Using logical relevance for question answering

We propose a novel method of determining the appropriateness of an answer to a question through a proof of logical relevance rather than a logical proof of truth. We define logical relevance as the idea that answers should not be considered as absolutely true or false in relation to a question, but should be considered true more flexibly in a sliding scale of aptness. This enables us to reason rigorously about the appropriateness of an answer even in cases where the sources we are getting answers from are incomplete or inconsistent or contain errors. We show how logical relevance can be implemented through the use of measured simplification, a form of constraint relaxation, in order to seek a logical proof than an answer is in fact an answer to a particular question. We then give an example of such an implementation providing a set of specific rules for this purpose.     

The Operationalistic and Hermeneutic Status of Psychoanalysis

Hermeneutic and anti-hermeneutic sides in the debate about psychoanalysis are entangled in an epistemological and methodological antinomy, here exemplified by Grünbaum's and Spence's paradigmatic views. Both contain a partial element of truth, which they assert dialectically one against the other (§§ 1 and 2). This antinomy disappears only by reconciling an operationalist approach with man's ability to suspend the effectiveness of the‘laws’ applied to him (§ 3). The hermeneutic way in which the technical-operational criterion of truth works in psychoanalysis demands that clinical and extra-clinical testing methods work synergically, through a fruitful self-correcting strategy, grounded on the very psychoanalytic object: the unconscious (§ 4). This revised version was published online in August 2006 with corrections to the Cover Date.     

Monitoring and control in multitasking

Psychonomic Bulletin & Review - The idea that conflict detection triggers control adjustments has been considered a basic principle of cognitive control. So far, this “conflict-control...