In heartbeat detection tasks based on the Method of Constant Stimuli (MCS), subjects judge the simultaneity between their heartbeats and stimuli presented at six intervals ranging from 0 to 500 ms after the R-waves on an electrocardiogram. Because research suggests that subjects do not perceive stimuli at 0 or 500 ms as simultaneous, individual performance was indexed with quadratic trend analy...

The generalized conjunction/disjunction function (GCD) is a continuous logic function of two or more variables that integrates conjunctive and disjunctive properties in a single function. It is used as a mathematical model of simultaneity and replaceability of inputs. Special cases of this function include the full (pure) conjunction, the partial conjunction, the arithmetic mean, the partial di...

This paper investigates the relationship between labor supply and the consumption of marijuana and cocaine using data from the National Longitudinal Survey of Youth. Previous studies have yielded mixed evidence but have used potentially inadequate measures to account for the simultaneity between drug consumption and labor supply. I implement an instrumental variable procedure that utilizes a se...

Objective: to identify and classify the most important occupational stressors affecting nursing professionals in the medical units within a hospital. Method: quantitative-qualitative, descriptive and prospective study performed with Delphi technique in the medical units of a general university hospital, with a sample of 30 nursing professionals. Results: the stressors were work overload, fr...

This paper analyzes the impact of job insecurity perceptions on individual well-being. While previous studies on the subject have used the concept of perceived job insecurity rather arbitrarily, the present analysis explicitly takes into account individual perceptions about both the likelihood and the potential costs of job loss. We demonstrate that any model assessing the impact of perceived j...

We investigated the conditions necessary for perceptual simultaneity of visual and auditory stimuli under natural conditions: video sequences of conga drumming at various rhythms. Under most conditions, the auditory stream needs to be delayed for sight and sound to be perceived simultaneously. The size of delay for maximum perceived simultaneity varied inversely with drumming tempo, from about ...