Intervention Effects on Stage of Change Membership and Transitions among Adolescent Energy Balance Behaviors

The transition from childhood to adolescence is a crucial period for the development of healthy behaviors to be sustained later in life. With obesity a leading public health problem, the promotion of healthy behaviors has the potential to make a huge impact. The current study evaluated Stage of Change progression in a large (N = 4158) computer-delivered, Transtheoretical Model-tailored intervention focusing on physical activity and fruit and vegetable consumption (FV). Markov models were used to explore stage transitions and patterns of discrete change from sixth to ninth grade. Nested model comparisons examined the consistency of these patterns across time and intervention condition. Major findings supported models in which participants were free to transition forward and backward to any of the stages, but higher probabilities were observed for remaining in the same stage or for transitioning one or two stages forward. Participants in the intervention group had higher probabilities of transitioning toward Maintenance, with more change occurring relative to the comparison group during transitions from grades six to eight but not for grades eight to nine.     

Cognitive Load Theory,Element Interactivity,and the Testing and Reverse Testing Effects

Summary: The testing effect arises when learners who are tested rather than relearning material obtain superior scores on a final test than those who relearn. Based on cognitive load theory, six experiments examined whether the effect was evident under low or high element interactivity (a measure of complexity) conditions. Students learning to write types of text were participants. In all experiments, effects on a final common test of two presentations were compared with a single presentation followed by a preliminary test. The testing effect on immediate tests was larger and more likely using lower element interactivity materials. A reverse testing effect was likely on immediate tests tapping higher element interactivity material but possibly eliminated by using a delayed test. Copyright © 2017 John Wiley & Sons, Ltd.     

Developing and demonstrating inhibitory stimulus control over repetitive behavior

Developing inhibitory stimulus control over repetitive behavior minimizes the social and learning disruptions caused by this behavior while allowing individuals to continue to access this source of reinforcement at nonproblematic times. These procedures involve allowing repetitive behaviors to occur in some stimulus conditions (S+) and blocking the repetitive behavior in order to disrupt the response–reinforcer relation in other stimulus conditions (S‐) such that the onset of the S‐ period results in rapid and sustained reductions in repetitive behavior. However, the demonstration of stimulus control exerted by the S‐ has often been confounded with participants' exposure to programmed reductive contingencies (i.e., behavior is reduced due to direct contact with contingencies rather than the programmed antecedent stimuli). The current study both developed and demonstrated the suppressive effects of S‐ presentation upon repetitive behavior with two children diagnosed with autism spectrum disorders. These demonstration techniques involved (a) introducing the S‐ into novel environments without the programmed contingencies that we used to establish discriminative control, (b) evaluating the reductive effects of programmed contingencies with and without the associated discriminative stimuli, and (c) evaluating latencies to the onset of repetitive behavior given S+ and S‐ presentations.     

An alternative method of thinning reinforcer delivery during differential reinforcement

Differential reinforcement of alternative behavior (DRA) may result in rates of reinforcement that are impractical for caregivers to implement; therefore, recent research has examined methods for thinning reinforcer delivery during DRA. In this study, reinforcer delivery was thinned during DRA by restricting access to the participant's alternative response materials.     

Are Knowledge Claims Indexical?

David Lewis, Stewart Cohen, and Keith DeRose have proposed that sentences of the form S knows P are indexical, and therefore differ in truth value from one context to another.¹ On their indexical contextualism, the truth value of S knows P is determined by whether S meets the epistemic standards of the speakers context. I will not be concerned with relational forms of contextualism, according to which the truth value of S knows P is determined by the standards of the subject Ss context, regardless of the standards applying to the speaker making the knowledge claim. Relational contextualism is a form of normative relativism. Indexical contextualism is a semantic theory. When the subject is the speaker, as when S is the first person pronoun I, the two forms of contextualism coincide. But otherwise, they diverge. I critically examine the principal arguments for indexicalism, detail linguistic evidence against it, and suggest a pragmatic alternative.     

Contents Volume 54

Volume Contents

Contents Volume 54     

Crossan on the Couch, Along with the Rest of Us: Part Two: Six Proposals Toward a New Paradigm for a Psychologically Realistic Approach to the Search for the Historical Jesus as Suggested by the Work of Hal Childs

Building on the theoretical basis spelled out in my first article on Hal Childs' The Myth of the Historical Jesus and the Evolution of Consciousness, the present article engages in dialogue with Crossan's 2000 autobiography, A Long Way From Tipperary. The dialogue focuses on six proposals emerging from Childs' work that advocate the inclusion of psychological realism in rethinking the task, practice, and outcome of historical Jesus research. The six proposals are as follows: first, that psychological realism is an essential part of historical realism; second, that unconscious factors are to be considered at work in the viewer as well as in the viewed in historical Jesus research; third, that every reconstruction of the historical Jesus is mythic; fourth, that the preunderstanding that the Jesus scholar brings to historical Jesus research is generated within a hermeneutical circle constituted by a vast web of relationships, purposes, and meanings that include every aspect of the scholar's life; fifth, that the final goal of historical Jesus research is not the facts about the historic Jesus, but the meaning of these facts as archetypal images for self-understanding, world-understanding, and the evolution of consciousness; and sixth, that the purpose of the Gospel is to evoke new archetypal projections in the reader that can lead to new incarnations of the archetypal Self awakened and informed by the story of Jesus, often as recovered by the Jesus historian.