Ideological parsimony

The theoretical virtue of parsimony values the minimizing of theoretical commitments, but theoretical commitments come in two kinds: ontological and ideological. While the ontological commitments of a theory are the entities it posits, a theory’s ideological commitments are the primitive concepts it employs. Here, I show how we can extend the distinction between quantitative and qualitative parsimony, commonly drawn regarding ontological commitments, to the domain of ideological commitments. I then argue that qualitative ideological parsimony is a theoretical virtue. My defense proceeds by demonstrating the merits of qualitative ideological parsimony and by showing how the qualitative conception of ideological parsimony undermines two notable arguments from ideological parsimony: David Lewis’ defense of modal realism and Ted Sider’s defense of mereological nihilism.     

Transformational leadership and task cohesion in sport: The mediating role of intrateam communication

ObjectivesLittle is known about the mechanisms that might mediate the relationship between transformational leadership behaviors and follower outcomes in the sporting domain. The purpose of this study was to examine whether intrateam communication mediated the effects of transformational leadership behaviors on task cohesion.Design/MethodsA cross-sectional study of university level ultimate frisbee players (N = 199). Participants completed a measure assessing their perceptions of their captain's transformational leadership behaviors. Post-competition, participants completed measures assessing perceptions of intrateam communication and task cohesion within their own team.ResultsMultilevel analyses revealed intrateam communication to partially mediate the relationships between two of the transformational leadership behaviors and task cohesion.ConclusionsIntrateam communication is seen to be a mechanism that explains the relationship between transformational leadership and task cohesion. Overall, the results support and add to the range of positive effects associated with transformational leadership in sport, and are suggestive of interventions that may raise levels of team cohesion.     

Development of a Research Instrument for Evaluating the Visitor Outcomes of Face-to-Face Interpretation

ABSTRACT

This article details the development, testing, and refinement of a set of indicators and a data collection instrument designed to be used to evaluate the outcomes of face-to-face interpretation across a range of heritage-based visitor settings and experiences. One of a suite of data collection instruments, the self-completing visitor questionnaire incorporates a set of indicators that (a) reflects the types of visitor outcomes that managers actually want from their interpretive programs; (b) is theoretically valid based on what is known about the potential cognitive, affective, and behavioural outcomes of interpretation, and (c) requires minimal effort, expense, and little or no social research expertise to collect and analyse the data, yet produces results with acceptable validity and reliability. While management and industry-driven, the research is underpinned by some thirty years of evaluation theory and practice, and is thus grounded in theories of psychology and human behaviour and methods from the social sciences and from applied program evaluation. This makes the final set of indicators an important contribution to the literature, and the questionnaire itself a useful and practical tool for those whose expertise and responsibilities lie primarily with managing and delivering rather than researching and evaluating the outcomes of interpretation.     

Cross-modal induction of changes in sensory thresholds

Two experiments are reported in which subliminal stimulation of one modality with emotional material impairs detection performance in a different modality. In the first experiment the visual awareness threshold for neutral material was raised by simultaneous auditory presentation of emotional words. This result supports the hypothesis that threshold changes induced by emotional stimulation are mediated centrally. In the second experiment a similar effect was obtained when the experimental roles of the two modalities were reversed. An analysis of the effect in terms of the parameters of Signal Detectability Theory indicates that it is mediated by a lowering of the sensitivity of the detection mechanism. This may be caused either by attenuation of incoming signals, or by an increase in the level of “noise” against which the signal is received.     

Comparison of output order in free recall

Two measures of output order in free recall were examined and shown to vary with characteristics of recall unrelated to output order. The output location of a subset of items in recall, using the standard recall rank measure and the “observed minus expected” score, varied both with number of items in the subset and total number of items recalled. A new measure of output order (the relative index of priority or RIP score) was proposed that is invariant with these characteristics of recall, providing an uncontaminated empirical index of the output location of a subset of items in the recall sequence.     

Traffic Offences: Planned or Habitual? Using the Theory of Planned Behaviour and habit strength to explain frequency and magnitude of speeding and driving under the influence of alcohol

This study addresses the socio‐cognitive determinants of traffic offences, in particular of speeding and drinking and driving. It has two aims: (1) to test the hypothesis of a direct effect of habits on offences (i.e., independent of intentions) by employing a specific measure of habits (i.e., the SRIH) and (2) to analyse the offences by taking account of three distinct parameters: Frequency, usual magnitude (i.e., the most frequent deviation from the law) and maximal magnitude (i.e., the greatest deviation occasionally adopted) in order to represent more accurately the variability of the offending behaviours. A total of 642 drivers replied to a questionnaire. The results corroborate the idea that intention and habit are distinct and direct determinants of offences. The use of the SRIH dismisses the criticisms made with regard to the measure of past behaviour. The distinction between the three behavioural parameters proves to be relevant, as their determinants are not exactly similar. Finally, attitude and subjective norm had direct effects on the maximal magnitude and/or on the frequency of the offence. The discussion concerns the contribution of this study to the analysis of offences as well as its limitations and addresses the theoretical plausibility of the direct effects of attitude and the subjective norm.