Income inequality and risk of suicide in New York City neighborhoods: a multilevel case-control study

Evidence on the relationship between income inequality and suicide is inconsistent. Data from the New York City Office of the Chief Medical Examiner for all fatal injuries was collected to conduct a multilevel case-control study. In multilevel models, suicide decedents (n=374) were more likely than accident controls (n=453) to reside in neighborhoods with greater income inequality even after controlling for individual characteristics; this relation was modified by age with an effect overall and among decedents aged 15-34 but not among decedents 35-64. These data suggest that income inequality may contribute to the risk of suicide in younger adults.     

Job Flexibility and Job Insecurity: The Dutch Case

Since the 1970s the flexible workforce in the Netherlands has been an important factor of labour force growth. This growth was much stimulated because nonworking women entered the labour market via part-time jobs, temporary jobs, temporary employment agency jobs, and part-time jobs with a weekly changing number of additional working hours. The question raised in this article is whether job flexibility gives rise to feelings of job insecurity. It appears that flexiworkers experience more job insecurity than workers with permanent contracts. For this reason most workers prefer a permanent contract in the future. But there is also a considerable portion of the flexiworkers that actually prefers the concept of flexiwork, both now and in the future. Next, we consider how the Dutch government and work organizations prepare themselves for this new flexiworking situation. How do they keep the demand for flexibility in balance with the need for commitment of workers, so as to ensure quality delivery of products and services? Recent legislation, for example, stimulates flexibility but also protects against job insecurity. Buffers are built into the new flexiwork arrangements so that flexiworkers are protected against hasty dismissal in times of economic recession.     

Exploring Temporal Progression of Events Using Eye Tracking

This study investigates the representation of the temporal progression of events by means of the causal change in a patient. Subjects were asked to verify the relationship between adjectives denoting a source and resulting feature of a patient. The features were presented either chronologically or inversely to a primed event context given by a verb (to cut: long–short vs. short–long). Effects on response time and on eye movement data show that the relationship between features presented chronologically is verified more easily than that between features presented inversely. Post hoc, however, we found that the effects of temporal order occurred only when subjects read the features more than once. Then, the relationship between the features is matched with the causal change implied by the event context (contextual strategy). When subjects read the features only once, subjects respond to the relationship between the features without taking into account the event context.     

The reconstruction of static visual forms from sparse dotted samples

This study explored the ability of observers to recognize very sparsely sampled, stereoscopic, dotted surfaces. The observers’ performance exceeded that of a simple surface-fitting algorithm that served as a first approximation model to the solution of the perceptual problem. We explored various attributes ofthe stimulus surfaces, but were unable to find any single attribute that could account for the measured performance. Therefore, we propose that the observers used several global surface attributes jointly to distinguish one form from another. Collectively, these attributes define what is meant by form in this study. We suggest that our results argue for a globally precedent, multidimensional model of form reconstruction as opposed to a local-feature, unidimensional interpretation.     

Stereoscopic perception with brief exposures

In this report we describe the results of an experiment in which we demonstrated that a powerful and compelling stereoscopic experience is elicited with very brief (< 1 msec) stimulus durations. The observers were highly successful in recognizing briefly flashed, stereoscopic, random-dot surfaces in the absence of monocular contours. The results are shown to be closely related to the range of depths for any stimulus form; however, the recognition thresholds were nonmonotonic as a function of disparity. Previous investigators have disagreed about the existence of a temporal threshold for stereopsis. We believe that prior findings suggesting that stereopsis cannot occur at short exposure durations are probably due to inadequate control of fixation disparity. Therefore, there is poor dichoptic image registration when a stereoscopic stimulus is presented. The present results also raise difficulties for any theory of stereopsis that requires eye movements.