On the Tenability of Non-Factualism with Regard to the A Priori

In a number of recent articles, Hartry Field has attempted to reclaim the a priori for his own brand of non-factualist epistemology by introducing a non-epistemic notion of the a priori based purely upon the position of individual beliefs within belief systems. In this article we examine (i) whether a robust enough notion of aprioricity is available to Field, and, by extension, to the radical empiricist and (ii) whether it is possible to connect up the non-epistemic notion of aprioricity with questions about the epistemic status of those beliefs that happen to be a priori in the non-epistemic sense.     

When simplifying life is not so bad: the link between rigidity, stressful life events, and mental health in an undergraduate population

Decades of research have generally shown that being more rigid is associated with poorer mental health. We investigated whether all aspects of what has been termed “rigidity” are harmful. In particular, we hypothesized that the desire for simple structure (DSS) will not be associated with poor mental health, and in some cases might be associated with better mental health. In contrast, the intolerance of uncertainty (IU) was hypothesized to be associated with a wide range of indices of poor mental health. We also hypothesized that people high in IU would be less resilient in the face of stressful life events. Results across two cross-sectional surveys (N=240; N=331) supported our hypotheses. DSS was associated with less hopelessness, whereas IU was associated with more depression, anxiety, stress, suicidal ideation, and hopelessness. In addition, moderational analysis supported the hypothesis that IU magnifies the adversive effect of stressful life events on depression, anxiety and hopelessness. IU was more strongly related to the negative indices of well-being than to the positive index of life satisfaction. The implications of these findings for cognitive behavioural therapy practice are discussed.     

Relative contributions of envelope maxima and minima to comodulation masking release

Comodulation masking release (CMR) is a phenomenon that demonstrates the sensitivity of the auditory system to across-frequency differences in the temporal modulation pattern of a complex waveform. In this paper, we review briefly some of the data on the physical parameters that affect CMR and describe models that have been proposed to account for CMR -- namely, models based upon envelope equalization/cancellation, across-frequency envelope correlation, and “dip listening”. The present literature is ambiguous with regard to the relative importance of energy in the peak and dip regions of the waveform envelope. We therefore performed a series of experiments to investigate this issue. In the first experiment, we examined CMR for signals that resulted either in a uniform increment or in uniform decrement in the masking noise centred on the signal frequency. This was accomplished by using a 20-Hz-wide noise band centred on 700 Hz as both the masker and as the signal, adjusting the phase angle between the signal and masker to either 0° (increment) or 180° (decrement). Conditions were examined where either zero, one, two, four, or six comodulated flanking bands were present. Results indicated positive CMRs for all conditions in which a comodulated flanking band was present. CMR increased as the number of flanking bands increased for intensity increments, but not for intensity decrements. The remaining experiments examined conditions where signals were present only in masker peaks, or only in masker dips. The results of these experiments indicated relatively large CMRs when the signal occurred in dip regions, but no CMR when the signal occurred in peak regions. Whereas some of the results of the above experiments would be difficult to account for in terms of the dip listening hypothesis of CMR, the present findings did indicate that the stimulus cues that give rise to CMR appear to be derived primarily from the dip regions of the masking noise.