Discrimination of second-format-like frequency transitions

Discrimination of two types of simulated single-second-format frequency transitions was studied, transitions where members of a stimulus set shared the same onset frequency and transitions where stimuli of a set shared the same offset frequency. Experiment 1 employed an adaptive procedure to measure just-noticeable differences for transitions that increased in frequency. Experiment 2 obtained complete psychometric functions, based on a three-interval, forced-choice procedure, for transitions that either increased or decreased in frequency. In both experiments, better discrimination occurred for longer stimuli, measured in hertz/millisecond, and for transitions that shared the same onset frequency. There were no differences, in Experiment 2, between discrimination of rising and falling transitions. Results are considered from several theoretical perspectives.     

A sensory basis for the lateral difference in the newborn infant's response to somesthetic stimulation

To determine whether lateral differences in the newborn infant's response to somesthetic stimulation are a consequence of lateral differences in sensitivity or whether they are the result of lateral differences in motor tendencies, cardiac response to stimulation of the left and right perioral region was examined. Cardiac acceleration occurred significantly more frequently to stimulation of the right than to stimulation of the left. Ipsilateral head turning also occurred more reliably to stimulation of the infant's right side than to stimulation of his left side. Evidence of reliable lateral differences in cardiac acceleration responses even under conditions in which the effects of lateral differences in head turning were removed suggested that the laterally differentiated cardiac responsiveness was not merely a function of increased motor activity consequent upon stimulation of the infant's right side but reflected a difference in sensitivity at the infant's two sides as well.     

Being bored: Heidegger on patience and melancholy

In his reflections on ethics, Descartes distances himself from the eudaimonistic tradition in moral philosophy by introducing a distinction between happiness and the highest good. While happiness, in Descartes’s view, consists in an inner state of complete harmony and satisfaction, the highest good instead consists in virtue, i.e. in ‘a firm and constant resolution' (e.g. CSMK: 325/AT 5: 83) to always use our free will well or correctly. In Section 1 of this paper, I pursue the Cartesian distinction between happiness and the highest good in some detail. In Section 2, I discuss the question of how the motivation to virtue should be accounted for within Descartes’s ethical framework. In Section 3, I turn to Descartes’s defence of the view that virtue, while fundamentally distinct from happiness, is nevertheless sufficient for obtaining it. In the final section of the paper (Section 4), my concern is instead with a second and sometimes neglected distinction that Descartes makes between two different senses of the highest good. I show that this distinction does not remove the non-eudaimonistic character of Descartes’s ethics suggested in Section 1, and present two reasons for why the distinction is important for Descartes’s purposes.     

A longitudinal study of the effects of dual-earner couples' utilization of family-friendly workplace supports on work and family outcomes

Little research exists on the effects of the utilization of workplace supports on work-family conflict and job satisfaction. With family systems theory as a framework, 2 waves of national survey data were collected from 234 couples (N = 468) caring for children and for aging parents. Data were analyzed with structural equation modeling techniques. Longitudinal results indicate that individuals' use of workplace supports was related to work-family conflict in the direction opposite to expectations and was related to job satisfaction in the direction consistent with expectations. Differential effects for wives versus husbands were found. In addition, couples' use of workplace supports was only minimally related to wives' outcomes. Results are discussed in terms of gender differences, family systems theory, and methodological and measurement issues related to the longitudinal study of utilization of workplace supports.     

Semantics for existential graphs

This paper examines Charles Peirce's graphical notation for first-order logic with identity. The notation forms a part of his system of existential graphs, which Peirce considered to be his best work in logic. In this paper a Tarskian semantics is provided for the graphical system.     

Age differences in discrimination of simulated single-formant frequency transitions

We studied auditory discrimination of simulated single-formant frequency transitions that resembled portions of certain speech consonants. Significant age differences in transition discrimination occurred; both children and older adults required larger acoustic differences between transitions for discrimination than did teenagers/young adults. Longer transitions were more easily discriminated than shorter transitions by all listeners, and there were no differences between discriminations of rising and falling transitions. Teens/young adults and older adults, but not children, required larger frequency differences to discriminate frequency transitions followed by a steady-state sound than for transitions alone. There were also age differences in discrimination of steady-state sounds. These developmental-perceptual differences may help explain why children and older adults who have good pure-tone sensitivity may experience difficulty in understanding speech.     

Family interference with work and workplace cognitive failure: The mitigating role of recovery experiences

The first goal of this study was to test whether family interference with work (FIW) is positively related to increased workplace cognitive failure (WCF), which is defined as errors made at work that indicate lapses in memory (e.g., failing to recall work procedures), attention (e.g., not fully listening to instruction), and motor function (e.g., unintentionally pressing control switches on machines). The second goal was to determine whether recovery experiences (psychological detachment and relaxation) during free time on evenings and weekends can mitigate (weaken) the positive relationship between FIW and WCF. Results based on data collected from 118 water utility employees suggest that FIW is indeed related to more WCF, and that psychological detachment from work mitigates this positive relationship. It was relatively less evident that relaxation plays such a mitigating role.