The effects of reinforcement magnitude on functional analysis outcomes

The duration or magnitude of reinforcement has varied and often appears to have been selected arbitrarily in functional analysis research. Few studies have evaluated the effects of reinforcement magnitude on problem behavior, even though basic findings indicate that this parameter may affect response rates during functional analyses. In the current study, 6 children with autism or developmental disabilities who engaged in severe problem behavior were exposed to three separate functional analyses, each of which varied in reinforcement magnitude. Results of these functional analyses were compared to determine if a particular reinforcement magnitude was associated with the most conclusive outcomes. In most cases, the same conclusion about the functions of problem behavior was drawn regardless of the reinforcement magnitude.     

A rapid assessment of skills in young children with autism

Educational interventions based on the principles of behavior analysis are highly effective for establishing skills in young children with autism. As a first step in program development, the child's current skill level is determined by evaluating performance on tasks drawn from a preestablished curriculum. However, few specific guidelines have been delineated for conducting these skills assessments or interpreting the results. In this study, we evaluated an efficient methodology for conducting skills assessments. Six children who had been diagnosed with autism participated. The relative efficacy of two assessment packages--one containing several reinforcement procedures and one containing several potentially effective prompts--was evaluated across two to three skills for each child using multiple baseline and reversal designs. Results suggested that the methodology was useful for matching targeted skills to appropriate interventions.     

Collateral effects of response blocking during the treatment of stereotypic behavior

The collateral effects of response blocking were evaluated while treating stereotypic behavior in a woman diagnosed with autism. Blocking stereotypic behavior (head and tooth capping) was associated with decreases in leisure-item interaction and increases in another stereotypic response (hand wringing). Results suggested that the reduction in item interaction was due to adventitious punishment. Prompts to access an alternative source of reinforcement attenuated the side effects somewhat, but results suggested that the undesirable effects of response blocking may be fairly durable.     

Dopaminergic and prefrontal contributions to reward-based learning and outcome monitoring during child development and aging

In many instances, children and older adults show similar difficulties in reward-based learning and outcome monitoring. These impairments are most pronounced in situations in which reward is uncertain (e.g., probabilistic reward schedules) and if outcome information is ambiguous (e.g., the relative value of outcomes has to be learned). Furthermore, whereas children show a greater sensitivity to external outcome information, older adults focus less on a rapid differentiation of rewarding outcomes. In this article, we review evidence for the idea that these phenomenologically similar impairments in learning and outcome monitoring in children and older adults can be attributed to deficits in different underlying neurophysiological mechanisms. We propose that in older adults learning impairments are the result of reduced dopaminergic projections to the ventromedial prefrontal cortex, which lead to less differentiated representations of reward value. In contrast, in children, impairments in learning can be primarily attributed to deficits in executive control, which may be due to a protracted development of the dorsal medial and lateral prefrontal cortices. We think that this framework maps well onto recent neurophysiological models of reward processing and is plausible from a broader developmental perspective.     

It has been said that, “There are three degrees of falsehoods: Lies,damn lies,and statistics”

Applied behavior analysis (ABA) researchers have historically eschewed population-based, inferential statistics, preferring to conduct and analyze repeated observations of each participant's responding under carefully controlled and manipulated experimental conditions using single-case designs (SCDs). In addition, early attempts to adapt traditional statistical procedures for use with SCDs often involved trade-offs between experimental and statistical control that most ABA researchers have found undesirable. The statistical methods recommended for use with SCDs in the current special issue represent a welcome departure from such prior suggestions in that the current authors are proposing that SCD researchers add statistical methods to their current practices in ways that do not alter traditional SCD practices. Further refinement and use of such methods would (a) facilitate the inclusion of research using SCDs in meta-analyses and (b) aid in the development and planning of grant-funded research using SCD methods. Collaboration between SCD researchers and statisticians, particularly on research that demonstrates the benefit of these methods, may help promote their acceptance and use in ABA.     

Parents' depressive symptoms and children's adjustment over time are mediated by parenting,but differentially for fathers and mothers

Parenting has been found to act as a mediator of the relation between parents' depressive symptoms and children's adjustment. The present study replicated this result, and also found specific effects of gender for both parents and children. A total of 319 parents provided reports of their depressive symptoms (BDI) and two parenting styles (APQ; inconsistent discipline and positive parenting) as well as of their elementary schoolchildren's adjustment (VBV-EL; oppositional-defiant behaviour, hyperactivity, internalizing, social-emotional competence). The first and second measurement occasions were six months apart. Bivariate correlations showed the expected pattern of positive associations between parental depression, child maladjustment and problematic parenting. However, the results differed for mothers and fathers, and the mediation was moderated by the children's gender. Inconsistent discipline was a mediator for both fathers and mothers. The path from fathers' depression was additionally negatively mediated by positive parenting. Boys were more vulnerable than girls.     

Alternative death rituals in Switzerland: building a community of shared emotions and practices

New alternative death rituals are gaining significance in Switzerland, like in other contemporary Western societies. This article discusses how celebrants who are independent of any religious community shape alternative funerals and why such rituals may be able to function as a coping resource for a certain kind of participants. I argue that these rituals, co-produced by celebrants and the bereaved and including actively involved participants, can be seen as a re-conquest of ritual agency for lay people. By encouraging physical and mental contact with the deceased, the celebrants try to enable emotional arousal and create a temporary community of shared experiences and emotions and of the living and the dead. Elements of an individually crafted spirituality and a kind of nature religion represent both separation and continuing bonds between the living and the dead. As a consequence, such funerals serve as a resource in the face of death by integrating a singular death with the wider context.     

Losing Oneself (in a Good Way): On the Value of Full Attention

The present paper considers the question whether, and if so how, a subject's full attention to an object which she interacts with might have value. More specifically, I defend the claim that in order for a subject's activity to have value, it is sufficient that the subject give her full attention to the object towards which the activity is directed.     

Alvin Plantinga on Paul Draper’s evolutionary atheology: implications of theism’s noncontingency

In his recently published Where the Conflict Really Lies: Science, Religion, & Naturalism 2011 Alvin Plantinga criticises Paul Draper’s evolutionary argument against theism as part of a larger project to show that evolution poses no threat to Christian belief. Plantinga focuses upon Draper’s probabilistic claim that the facts of evolution are much more probable on naturalism than on theism, and with regard to that claim makes two specific points. First, Draper’s probabilistic claim contradicts theism’s necessary falsehood; unless Draper wishes to acknowledge that theism is necessarily true, his claim commits him to theism’s contingency and so sets him at odds with a mainstream that sees God’s existence as decidedly noncontingent. Second, Plantinga argues that Draper’s probabilistic claim is, even if true, overwhelmed by counterclaims about facts that are more likely on theism than naturalism. I argue this critique of Draper depends upon a serious error, and that Plantinga overlooks the full implications of his own presuppositions. Correcting these shortcomings shows that Plantinga’s own probabilistic-apologetics (e.g., the ‘Evolutionary Argument Against Naturalism’) requires theism’s contingency no less than does Draper’s atheology.