Factors impacting emergence of behavioral control by underselected stimuli in humans after reduction of control by overselected stimuli

Stimulus overselectivity occurs when only one of potentially many aspects of the environment controls behavior. Adult participants were trained and tested on a trial-and-error discrimination learning task while engaging in a concurrent load task, and overselectivity emerged. When responding to the overselected stimulus was reduced by reinforcing a novel stimulus in the presence of the previously overselected stimulus in a second trial-and-error discrimination task, behavioral control by the underselected stimulus became stronger. However, this result was only found under certain circumstances: when there was substantial overselectivity in the first training phase; when control by the underselected stimulus in the first phase was particularly low; and when there was effective reduction in the behavioral control exerted by the previously overselected stimuli. The emergence of behavioral control by the underselected stimulus suggests that overselectivity is not simply due to an attention deficit, because for the emergence to occur, the stimuli must have been attended to and learned about in the training phase; but that a range of additional learning factors may play a role.     

The Effect of Placebo-Induced Changes in Expectancies on Maximal Force Production in College Students

This study used false information about a placebo (milk-sugar tablet) to induce expectancies regarding force production. Forty-two college students were assigned to a placebo/placebo (PP), placebo/no-placebo (PN), or control group, and underwent baseline testing and two trials assessing one-repetition maximum (1 RM) strength on a bench press and seated leg press. The PP and PN groups improved significantly compared to the control at Trial 1 for the bench press (p ≤ .01) and leg press (p ≤ .01). Disclosure of the true nature of the placebo resulted in force production declines in the PN group to levels approximating controls on the bench press (p > .05) and seated leg press (p > .05). The results suggest that placebo-associated expectancy effects played a significant part in the observed changes. Implications include information for coaches, teachers, and fitness enthusiasts about the importance of psychological factors in successful performance.     

Effects of Varying Feedback Accuracy on Task Acquisition: A Computerized Translational Study

Research has shown that the accuracy of instructions influences responding immediately and under later conditions. The purpose of the present study was to extend this literature and use a translational approach to assess the short- and long-term effects of feedback accuracy on the acquisition of a task. Three levels of inaccurate feedback were compared across groups. Participants who received accurate feedback performed best, while participants exposed to inaccurate feedback performed poorly in direct relation to the degree of inaccuracy. Once inaccurate feedback was corrected, this relation was less apparent. However, the effects of prior exposure to inaccurate feedback persisted in subsequent conditions when participants were exposed to accurate feedback. The effects of feedback accuracy on task acquisition also varied across individuals, suggesting that the effect may be idiosyncratic.     

Addiction‐Specific CACREP Standards in Clinical Mental Health Counseling Programs: How Are They Met?

In 2009, the Council for Accreditation of Counseling and Related Educational Programs (CACREP) included training standards specific to addiction for clinical mental health counseling programs. This study surveyed CACREP‐accredited program coordinators to determine how addiction‐specific standards were addressed.     

Support Groups for Suicide Survivors: Results of a Survey of Group Leaders

To update and expand Rubey and McIntosh's (1996) survivors of suicide support groups report, SPAN USA completed a survey of U.S. support group leaders (n = 100; 24% completion). There are now more survivor groups (from 280 to 417), and the majority of groups now have a survivor leader (78% vs. 25%). Groups continue to be small (88% < 10 members per session) and meet on a monthly basis (55%). Sharing continues to be a universal experience in groups, which tend to be open‐ended (85%). Current groups are newer, and more operate without a sponsor. Further research is needed to examine group member perspectives and effectiveness of groups.     

Responsibility to Protect and Militarized Humanitarian Intervention

My essay “Responsibility to Protect and Militarized Humanitarian Intervention: When and Why the Churches Failed to Discern Moral Hazard” (JRE 40.2) called for more questioning engagement with R2P than the broadly uncritical welcome given by the churches to the doctrine between September 2003 and September 2008. In response to Luke Glanville's reply, this essay identifies further reasons for caution before accepting R2P and so‐called humanitarian wars alongside defensive wars as paradigmatically justified. It is structured with reference to the tests in A More Secure World: Our Shared Responsibility, the Report by the Secretary‐General's High‐level Panel on Threats, Challenges and Change, as recommended to the General Assembly when considering whether to authorize or apply military force: seriousness of risk, intention, last resort, proportional means, balance of consequences.     

A Call for Research: The Need to Better Understand the Impact of Support Groups for Suicide Survivors

Support groups for suicide survivors (those individuals bereaved following a suicide) are widely used, but little research evidence is available to determine their efficacy. This paper outlines the pressing public health need to conduct research and determine effective ways to identify and meet the needs of suicide survivors, particularly through survivor support groups. After describing the various approaches to survivor support groups, we explain the need for further research, despite the inherent challenges. Finally, we pose several questions for researchers to consider as they work with survivors to develop a research agenda that sheds more light on the experiences of survivors and the help provided by survivor support groups.     

Evaluating Corroborative Evidence

How should we evaluate an argument in which two witnesses independently testify to some claim? In fact what would happen is that the testimony of the second witness would be taken to corroborate that of the first to some extent, thereby boosting up the plausibility of the first argument from testimony. But does that commit the fallacy of double counting, because the second testimony is already taken as independent evidence supporting the claim? Perhaps the corroboration effect should be considered illogical, since each premise should be seen as representing a separate reason in a convergent argument for accepting the claim as plausible. In this paper, we tackle the problem using argumentation schemes and argument diagramming. We examine a number of examples, and come up with two hypotheses that offer methods of analyzing and evaluating this kind of evidence.