Mood variability and the intensity of depressive states

Little is known about the relationship between the variability of moods and the tendency to experience depressed mood. The moods of twenty-five student subjects were measured over a period of some 30 days using scales assessing positive affect and negative affect. An index of mood variability was computed. This was correlated with two measures of average level of depression. The results showed a strong correlation between variability of moods and level of depression. High levels of mood variability accompanied high levels of depressive state in this nonclinical sample.     

An Examination of the Psychometric Properties of Holland's (1985) Vocational Preference Inventory (VPI), Using a British Sample

This study examines the psychometric properties of Holland's Vocational Preference Inventory (VPI) using a diverse UK sample. Whilst an item analysis appears to be satisfactory, the factor analysis reveals seven, rather than the hypothesized six factors. A number of gender and cultural differences were found in the inventory; the bases for these are discussed and suggestions for improving the inventory items for a UK population are offered.     

Negative priming is not task bound: A consistent pattern across naming and categorization tasks

When a word that was a to-be-ignored flanker on an initial prime trial becomes the target on the subsequent probe trial, responding to that word on the probe trial is slowed, a phenomenon callednegative priming. Virtually all prior studies have required subjects to perform the same task on both the prime and the probe trials. Thus, the extent to which negative priming is task bound is uncertain. We manipulated task factorially on the prime and probe trials, resulting in four groups: name-name, name-categorize, categorize-name, and categorize-categorize. The results showed equivalent negative priming of about 22 msec both within and between tasks for identical words, but no negative priming for semantically related words from the same category. These findings suggest (1) that negative priming for identical words can readily cross task types; and (2) that semantic negative priming does not occur for words, at least when categorical relatedness alone determines the semantic relation.     

Empiricism,fideism and the nature of religious belief

Earlier versions of this paper were read to the Departments of Philosophy at the University of New Brunswick and at Saint Francis Xavier University and to the Canadian Societh for the Study of Religion at Queen’s University, Kingston. The authors wish to thank the participants for their comments.     

Anti-foundation and self-reference

This note argues against Barwise and Etchemendy's claim that their semantics for self-reference requires use of Aczel's anti-foundational set theory, AFA, and that any alternative would involve us in complexities of considerable magnitude, ones irrelevant to the task at hand (The Liar, p. 35).Switching from ZF to AFA neither adds nor precludes any isomorphism types of sets. So it makes no difference to ordinary mathematics. I argue against the author's claim that a certain kind of naturalness nevertheless makes AFA preferable to ZF for their purposes. I cast their semantics in a natural, isomorphism invariant form with self-reference as a fixed point property for propositional operators. Independent of the particulars of any set theory, this form is somewhat simpler than theirs and easier to adapt to other theories of self-reference.I thank John Mayberry for discussions of axiomatics which inspired this paper. Jon Barwise's criticism of an earlier draft improved this one as did an anonymous referee.     

Biased cognitive operations in anxiety: Accessibility of information or assignment of processing priorities?

There is considerable evidence that anxiety is associated with a cognitive bias favouring the processing of threat-related information. Bower's (1981) network model attributes this bias to the enhanced availability of mood congruent information from memory. However, certain experimental tasks do not reveal such a bias, when this effect is strongly predicted by the model. We note that all tasks which have demonstrated such mood congruent processing effects in anxious subjects share the requirement that these subjects must assign priorities to simultaneously available, and differentially valenced, alternative processing options. This feature has been consistently lacking in those paradigms we have found insensitive to the influence of anxiety. It is therefore suggested that anxiety is associated with the assignment of high processing priorities to threat-related options, rather than with the facilitated availability of threat-related information from memory. This proposal was experimentally tested using a lexical decision task, which is sensitive to the accessibility of information from memory, under conditions which either do or do not introduce the requirement to assign priorities to alternative processing options. The results indicate that the facilitated processing of threat related stimulus words, shown by generalised anxiety patients, does indeed appear to reflect a bias in the assignment of processing priorities, rather than the enhanced availability of this information from memory.     

Animal Concepts Revisited: the use of Self- Monitoring as an Empirical Approach

Many psychologists and philosophers believe that the close correlation between human language and human concepts makes the attribution of concepts to nonhuman animals highly questionable. I argue for a three-part approach to attributing concepts to animals. The approach goes beyond the usual discrimination tests by seeking evidence for self-monitoring of discrimination errors. Such evidence can be collected without relying on language and, I argue, the capacity for error-detection can only be explained by attributing a kind of internal representation that is reasonably identified as a concept. Thus I hope to have shown that worries about the empirical intractability of concepts in languageless animals are misplaced. This revised version was published online in July 2006 with corrections to the Cover Date.