Further evaluation of prompt density,rate of reinforcement,and the persistence of manding

Previous research has evaluated the effects of prompt rates on the rate of communicative behavior. More recent research has suggested that dense prompting can result in communicative behavior that is more resistant to change. However, existing research has not considered the impact that higher response rates had on reinforcement rate, a variable known to impact response persistence. The current study systematically replicated previous research by evaluating communicative responding in contexts associated with dense- and lean-prompt schedules and extended existing research by (a) holding reinforcement rates similar across the two prompting schedules (lean and dense), and (b) evaluating the persistence of communicative responding in the contexts associated with each prompting schedule. The results for Experiment 1 clearly replicated and extended previous research. The results for Experiment 2 were equivocal and suggested that previous reinforcement history and response class size impacted outcomes.     

Might Relationship “Techniques” Extend the Reach, Efficacy, and Efficiency of the Psychotherapies? The Challenge of Treatment-Resistant Outpatients

Study-based clinical observations and two premises are presented as indications for a need to identify therapeutic relationship techniques or the like that can extend the reach and efficiency of the psychotherapies. The premises are: (1) advances in psychotherapy practice and research now highlight one of the field's most longstanding challenges, signified by terms like treatment resistance; and (2) some proportion of outpatients whose problems are resistant to the psychotherapies (and medications) have marked limitations in the capacity to relate positively and productively to others, including therapists. Thus, ironically, they cannot optimally utilize a treatment modality that largely has developed to ameliorate problems relating to others.     

A new group-training procedure for habituation demonstrates that presynaptic glutamate release contributes to long-term memory in Caenorhabditis elegans

In the experiments reported here we have developed a new group-training protocol for assessing long-term memory for habituation in Caenorhabditis elegans. We have replicated all of the major findings of the original single-worm protocol using the new protocol: (1) distributed training produced long-term retention of training, massed training did not; (2) distributed training at long interstimulus intervals (ISIs) produced long-term retention, short ISIs did not; and (3) long-term memory for distributed training is protein synthesis-dependent as it could be blocked by heat shock during the inter-block interval. In addition, we have shown that long-term memory for habituation is graded, depending on the number of blocks of stimuli in training. The inter-block interval must be >40 min for long-term retention of training to occur. Finally, we have tested long-term memory for habituation training in a strain of worms with a mutation in a vesicular glutamate transporter in the sensory neurons that transduce tap (eat-4). The results from these eat-4 worms indicate that glutamate release from the sensory neurons has an important role in the formation of long-term memory for habituation.     

Social antecedents of children's eyewtness testimony a single-subject experimental analysis

In a laboratory simulation, a single-subject design was used to examine the effects of two types of social influence on children's eyewitness testimony, which has not been the subject of systematic behavioral analyses. This study replicates and extends findings from group-comparison studies, and shows that a topic of pressing social importance is amenable to analysis at the individual level, and therefore, potentially, to a behavioral analysis.     

Does a sensory processing deficit explain counting accuracy on rapid visual sequencing tasks in adults with and without dyslexia?

The experiments conducted aimed to investigate whether reduced accuracy when counting stimuli presented in rapid temporal sequence in adults with dyslexia could be explained by a sensory processing deficit, a general slowing in processing speed or difficulties shifting attention between stimuli. To achieve these aims, the influence of the inter-stimulus interval (ISI), stimulus duration, and sequence length were evaluated in two experiments. In the first that used skilled readers only, significantly more errors were found with presentation of long sequences when the ISI or stimulus durations were short. Experiment 2 used a wider range of ISIs and stimulus durations. Compared to skilled readers, a group with dyslexia had reduced accuracy on two-stimulus sequences when the ISI was short, but not when the ISI was long. Although reduced accuracy was found on all short and long sequences by the group with dyslexia, when performance on two-stimulus sequences was used as an index of sensory processing efficiency and controlled, group differences were found with presentation of stimuli of short duration only. We concluded that continuous, repetitive stimulation to the same visual area can produce a capacity limitation on rapid counting tasks in all readers when the ISIs or stimulus durations are short. While reduced accuracy on rapid sequential counting tasks can be explained by a sensory processing deficit when the stimulus duration is long, slower processing speed in the group with dyslexia explains the greater inaccuracy found as sequence length is increased when the stimulus duration is short.     

Perversion from the medical-legal perspective

Abstract

The medical-legal view of perversion is strictly concerned with the sexual aspect. This is the result of a controversial historical process full of moralism with respect to sexuality. Psychoanalysis questions this reductionist view, offering itself as instrument of special importance in the characterization of perversion as a complex of structures in human beings.

Alves KC und Prado de Sousa S. Perversion aus der medizin-rechtlichen Perspektive

Die medizin-rechtliche Sicht der Perversion ist strikt mit dem sexuellen Aspekt befaßt. Dies ist das Ergebnis eines kontrovers historischen Prozesses, der ganz mit Moralismus im Hinblick auf Sexualität angefüllt ist. Psychoanalyse stellt diese reduktionistische Sicht in Frage und bietet sich selbst als Instrument von besonderer Bedeutung an, die Perversion als einen Komplex von Strukturen bei Menschen zu charakterisieren.

Alves KC y Prado de Sousa. Perversión desde la perspectiva médico-legal.

El punto de vista médico-legal de la perversión esta estrictamente relacionado con el aspecto sexual. Este es el resultado de un proceso controvertido moral histórico con respecto a la sexualidad. El Psicoanálisis cuestiona este punto de vista reduccionista, ofreciéndose como instrumento de especial importancia en la caracterización de la perversión como una complejidad estructural en los seres humanos.     

Interrelationships between Reading Disability and Attention-Deficit/Hyperactivity Disorder

Evidence from a number of investigations suggests a considerable overlap between reading disability (RD) and attention deficit-hyperactivity disorder (ADHD). We investigate the relationship between RD and ADHD in a cohort of 186 children 7.5–9.5 years of age, recruited explicitly to address classification and definitional issues in these disorders. Using multivariate methods, we examine the hypothesis that RD and ADHD represent separate diagnostic entities that frequently co-occur in the same individual. The results suggest that RD is characterized by deficits within the language system, in particular a subcomponent within that system, phonological processing; in contrast, such linguistic deficits are not characteristic of ADHD unless ADHD is associated with RD. When children with both RD and ADHD are examined, both the linguistic deficits associated with RD and the behavioral characteristics associated with ADHD are apparent, but these deficits are not synergistic. We conclude that RD and ADHD represent separate disorders that frequently co-occur.