Deflationary Truth and the Liar

Journal of Philosophical Logic -     

Dietary restraint as values-related motivation: a psychometric clarification

Psychological motivation toward dietary restraint can be measured by Cognitive Restraint, a subscale on the Three-factor Questionnaire (TFQ; Stunkard & Messick, 1985), and Drive for Thinness, a subscale on the Eating Disorder Inventory (EDI; Garner & Olmstead, 1984). On the basis of data obtained from American undergraduates, these two scales correlated significantly (r = .55); three value scales on the Eating Values Survey (EVS; Simmons, 1989) also correlated significantly with both Cognitive Restraint and Drive for Thinness (Appearance and Manners positively, Enthusiasm negatively). Correlations of other TFQ and EDI scales with values were minimal. Personal values specific to eating are discussed as components of a general motivational orientation toward self-management of eating but as relatively unrelated to such disruptive attributes of eating behavior as disinhibition or bulimia.     

Psychometric Analysis and Tentative Shortening of Survey of Personal Beliefs

The Survey of Personal Beliefs (SPB) is a frequently used measure of irrational beliefs, but can display less than ideal psychometric properties. In the first study of the present project, the five subscales of the SPB correlated as expected with higher levels of perfectionism, shame, and guilt. A confirmatory factor analysis, nevertheless, revealed that these subscales did not adequately describe responding on the SPB, and internal reliability for some subscales was poor. An abbreviated 12-item version of the SPB was more reliable than the subscales and generally as valid as the full 50-item instrument. With a second data set, the shortened version of the SPB was more consistent than the full 50-item scale in correlating positively with at least some measures of maladjustment that included depression, anxiety, neuroticism, and alexithymia. Future researchers may want to utilize the shorter 12-item version of the SPB as a more convenient and psychometrically acceptable measure of irrational beliefs.     

Construction of Smoking-Relevant Risk Perceptions Among College Students: The Influence of Need for Cognition and Message Content1

Changing smokers' health-risk perceptions has been difficult. This study tested whether need for cognition (NC)—a factor within Petty & Cacioppo's (1986) elaboration likelihood model that reflects the preference for effortful cognitive information processing—moderated responses to a smoking risk message intervention. College smokers (n=227) evaluated a fact-based or emotion-based smoking risk pamphlet or a control pamphlet. Among occasional but not daily smokers, NC interacted as hypothesized with type of message to moderate risk perceptions. Among participants with higher NC, the fact-based message produced the greatest increase in risk perception; whereas among participants with lower NC, the emotion-based message produced the greatest change. Findings demonstrate that individual differences in cognitive processing can influence the potency of health-risk messages.     

Pretreatment task persistence predicts smoking cessation outcome

R. Eisenberger's (1992) learned industriousness theory states that individuals display differing degrees of persistence depending on their history of reinforcement for effortful behavior. These differences may influence the development, maintenance, and cessation of addictive behaviors. In cross-sectional studies, E. P. Quinn, T. H. Brandon, and A. L. Copeland (1996) found that cigarette smokers were less persistent than nonsmokers, and R. A. Brown, C. W. Lejuez, C. W. Kahler, and D. R. Strong (2002) found that smokers who had previously abstained for 3 months were more persistent than those who had never quit. The present study extended these findings by using a prospective design. A pretreatment measure of task persistence (mirror tracing) completed by 144 smokers predicted sustained abstinence throughout 12 months of follow-up. Moreover, persistence predicted outcome independent of other significant predictors: gender, nicotine dependence, negative affect, and self-efficacy.