The Equivalence of Contingency Structure for Intuitive Covariation Judgments About Height,Weight, and Body Fat

In a complete between-subjects design, 576 respondents judged covariations of problems framed around height, weight, and body fat. A verbal measure was used, consisting of prepositional statements representing relationships between two of the variables, as well as two types of response options: true or false, and a 7-point, bipolar, Likert-type scale. Consistent with previous findings, weight and body fat were unambiguously judged as if positively correlated; there were indications of a perceived negative correlation of height and body fat; and there was no evidence that participants regarded height and weight as positively correlated. Furthermore, there was no reliable evidence in support of framing effects. However, there were indications of influence for conditional format. These findings are discussed relative to previous and ongoing research efforts, and it is concluded that it may be inappropriate to regard variations in conditional format as parallel items. Measures involving all possible variations are considered fundamentally unbiased and consistent with I. Ajzen's (1988) principle of aggregation.     

Local and global aspects of biological motion perception in children born at very low birth weight

Biological motion perception can be assessed using a variety of tasks. In the present study, 8- to 11-year-old children born prematurely at very low birth weight (<1500 g) and matched, full-term controls completed tasks that required the extraction of local motion cues, the ability to perceptually group these cues to extract information about body structure, and the ability to carry out higher order processes required for action recognition and person identification. Preterm children exhibited difficulties in all 4 aspects of biological motion perception. However, intercorrelations between test scores were weak in both full-term and preterm children—a finding that supports the view that these processes are relatively independent. Preterm children also displayed more autistic-like traits than full-term peers. In preterm (but not full-term) children, these traits were negatively correlated with performance in the task requiring structure-from-motion processing, r(30) = ?.36, p < .05), but positively correlated with the ability to extract identity, r(30) = .45, p < .05). These findings extend previous reports of vulnerability in systems involved in processing dynamic cues in preterm children and suggest that a core deficit in social perception/cognition may contribute to the development of the social and behavioral difficulties even in members of this population who are functioning within the normal range intellectually. The results could inform the development of screening, diagnostic, and intervention tools.     

An Examination of Stimulus Control in Fluency-Based Strategies: SAFMEDS and Generalization

Fluency-based strategies such as Say All Fast a Minute Each Day Shuffled (SAFMEDS) effectively promote fluent responding (i.e., high rate and accuracy). It is possible, however, that the stimulus control developed through these activities inhibits stimulus generalization. We investigated this concern in a two-part study with college students. Study 1 assessed generalization of rates of responding from training with SAFMEDS to a novel set of equivalent SAFMEDS flashcards. Results indicate that SAFMEDS promoted fluent responding, but rates of responding decreased during generalization probes. Furthermore, higher rates of responding during training were correlated with a greater decrease in rates of responding during generalization probes. This may indicate that students attend to irrelevant stimulus features of SAFMEDS during training. Study 2 examined the effects of embedding multiple-exemplar training within SAFMEDS. Results indicate that multiple-exemplar training can promote generalization of accurate and high-rate responding when incorporated in a SAFMEDS activity.     

Longitudinal analyses of religious and spiritual development among seminary students

We conducted a longitudinal study of spiritual development among a sample of graduate-level seminary students (N = 119) at a religiously affiliated university in the Midwest. Seven longitudinal hypotheses were tested based on a relational model of spirituality (Shults & Sandage, 2006). Over time, we expected that the seminary context would facilitate increases in students’ questing, intrinsic religiosity, spiritual well-being, spiritual openness, and spiritual activity. Furthermore, increases in intrinsic religiosity were hypothesised to lead to improvements in spiritual well-being, spiritual openness, realistic acceptance, and spiritual activity. Finally, we proposed that increases in spiritual questing would lead to greater spiritual openness and activity but decreased spiritual well-being. The results provide general support for these hypotheses and an empirical picture that differentiates intrinsic religiosity from questing.     

Religious fundamentalism and perceived threat: a report from an experimental study

This study investigated the experimental effect of threat on religious fundamentalism (RF) and the tendency towards reprisal. We presented 102 Christians with one of three scenarios, involving the hire of a Christian biologist, evolution biologist, or a (neutral) communications expert as professor at their university, and also the subsequent sanctioning of his speeding violation. Moderated multiple regression analyses of Christian/evolutionist data found that low RF endorsed the evolutionist and high RF endorsed the Christian; further, participants levied a higher court fine on the speeding evolutionist, regardless of RF. Analyses of Christian/neutral data found that low RF discriminated in favour of the neutral candidate, whereas high RF did not discriminate between candidates; also, low RF sanctioned the neutral candidate with a speeding ticket, while high RF sanctioned the Christian. Overall findings indicated that fundamentalists were not necessarily aggressive or punitive and that they reacted no different from non-fundamentalists when values were threatened.     

Objective Bayesianism,Bayesian conditionalisation and voluntarism

Objective Bayesianism has been criticised on the grounds that objective Bayesian updating, which on a finite outcome space appeals to the maximum entropy principle, differs from Bayesian conditionalisation. The main task of this paper is to show that this objection backfires: the difference between the two forms of updating reflects negatively on Bayesian conditionalisation rather than on objective Bayesian updating. The paper also reviews some existing criticisms and justifications of conditionalisation, arguing in particular that the diachronic Dutch book justification fails because diachronic Dutch book arguments are subject to a reductio: in certain circumstances one can Dutch book an agent however she changes her degrees of belief. One may also criticise objective Bayesianism on the grounds that its norms are not compulsory but voluntary, the result of a stance. It is argued that this second objection also misses the mark, since objective Bayesian norms are tied up in the very notion of degrees of belief.