The involvement of the orbitofrontal cortex in learning under changing task contingencies

Previous investigations examining the rat prefrontal cortex subregions in attentional-set shifting have commonly employed two-choice discriminations. To better understand how varying levels of difficulty influence the contribution of the prefrontal cortex to learning, the present studies examined the effects of orbitofrontal cortex inactivation in a two- or four-choice odor reversal learning test. Long-Evans rats were trained to dig in cups that contained distinct odors. In the two-choice odor discrimination, one odor cup was always associated with a cereal reinforcement in acquisition while the opposite odor cup was associated with a cereal reinforcement in reversal learning. In the four-choice odor discrimination, an additional two cups containing distinct odors were used that were never associated with reinforcement in acquisition or reversal learning. Bilateral infusions of the GABA-A agonist, muscimol (0.5 microg) into the orbitofrontal cortex did not impair acquisition of either the two- or four-choice discrimination task. However, muscimol infusions into the orbitofrontal cortex impaired two- and four-choice reversal learning. In the two-choice odor reversal, muscimol treatment selectively increased perseverative errors. In the four-choice odor reversal, muscimol treatment increased perseverative, regressive, as well as irrelevant errors. These findings suggest that the orbital prefrontal cortex not only enables task switching by supporting the initial inhibition of a previously relevant choice pattern, but under increasing task demands also enables the reliable execution of a new choice pattern and reduction of interference to irrelevant stimuli.     

Examining Relationships Among Ethnicity,PTSD, Life Functioning,and Comorbidity in Female OEF/OIF Veterans

There is much literature on posttraumatic stress disorder (PTSD) and male combat veterans, but little on PTSD by gender and ethnicity among women combat veterans. We examine ethnic differences in PTSD and comorbid disorders among 37 Hispanic, 27 White, and 15 Native female Operaton Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) combat veterans. Participants completed the Clinician-Administered PTSD Scale (CAPS), the Structured Clinical Interview for DSM-IV, Axis I (SCID-Axis I and II), Life Events Checklist (LEC), Military Stress Exposure Questionnaire (MSEQ), and the Medical Outcomes Study Short Form-36 (SF-36). Hispanics differed from Whites in having less education, more trauma exposure, higher levels of PTSD, mood disorder comorbidity, and poorer physical and emotional functioning. Natives differed from Whites with more trauma exposure, higher levels of PTSD, poorer emotional functioning, and higher rates of Cluster B PDs.     

Behavioral Telehealth Consultation with Families of Children with Autism Spectrum Disorder

In this study, desktop video teleconferencing was used to facilitate behavioral consultation at a distance with three parents of school‐age children with autism spectrum disorders. Parents were supported via desktop video teleconferencing as they conducted functional analyses and learned to implement an antecedent manipulation strategy, functional communication training, and a consequence‐based strategy. Parents then conducted a brief multi‐element treatment comparison to evaluate the preliminary effectiveness of each intervention strategy on their child's challenging behavior. The results of this study provide additional support to previous research suggesting that a telehealth model of behavioral consultation may be an effective way to assist parents of children with autism spectrum disorders address challenging behavior that disrupts family routines. Suggestions for future research are discussed. Copyright © 2016 John Wiley & Sons, Ltd.     

New religions and the internet: Recruiting in a new public space

The mass suicide of 39 members of Heaven's Gate in March of 1997 led to public fears about the presence of ‘spiritual predators’ on the world wide web. This paper describes and examines the nature of these fears, as reported in the media. It then sets these fears against what we know about the use of the Internet by new religions, about who joins new religious movements and why, and the social profile of Internet users. It is argued that the emergence of the Internet has yet to significantly change the nature of religious recruitment in contemporary society. The Internet as a medium of communication, however, may be having other largely unanticipated effects on the form and functioning of religion, both old and new, in the future. Some of the potential perils of the Internet are discussed with reference to the impact of this new medium on questions of religious freedom, community, social pluralism, and social control.     

Energetic Cost and Stability During Human Walking at the Preferred Stride Velocity

The possibility that preferred modes of locomotion emerge from dynamical and optimality constraints and the energetic and dynamical constraints on preferred and predicted walking frequency are explored in this article. Participants were required to walk on a treadmill at their preferred frequency, at a frequency predicted as the resonance of a hybrid pendulum-spring model of the legs, and at frequencies +/-15%, +/-25%, +/-35% of the predicted frequency. Walking at the preferred and predicted frequencies resulted in minimal metabolic costs and maximal stability of the head and joint actions. Mechanical energy conservation was constant across conditions. The head was more stable than the joints. The joints appeared to be in service of the head in maintaining a stable trajectory. The major findings of this study suggest a complementary relationship between energetic (physiological) and stability constraints in the adoption of a preferred frequency of walking. Multiple subsystems may be involved in constraining observed macroscopic behavior in intact biological systems. The approach and results of the study imply that a useful tack in understanding how dynamical control structures arise is to study the potential criteria that serve to act as constraints on skilled movement patterns in unimpaired and impaired populations.     

Being a good witness: The roles of benevolence and working memory capacity in rapport’s effect on eyewitness memory

Prior studies suggest that building rapport with eyewitnesses can produce measurable recall improvements, but the underlying mechanisms of rapport’s possible effects on recall remain underexplored. The present study investigated two possible mechanisms for rapport’s impact: (1) improved working memory capacity and (2) increased benevolence. Participants (N = 105) viewed a mock theft video, followed by one of two possible pre-interview interactions: rapport-building or a control interaction. Next, participants completed measures of working memory, altruism, and benevolence (pre-interview and post-interview), before recalling details of the theft. Analyses revealed that, when controlling for the effects of the interaction duration and participants’ pre- and post-interview benevolence, rapport did not affect eyewitness recall directly. However, rapport building did increase benevolence measured after and associated with the substantive eyewitness interview, which in turn predicted more accurate and new details reported, and fewer subjective/other details reported. These findings support benevolence toward the interviewer as a mechanism behind rapport’s effect on eyewitness recall. Implications for investigative interviews in relation to benevolence and motivating reciprocation are discussed.     

Uncovering the Value and Meaning of a Horticulture Therapy Program for Clients at a Long-Term Adult Inpatient Psychiatric Facility

This qualitative study investigated the value and meaning of the Greenhouse Program and its impact on recovery goals of residents with severe and persistent mental illness at an adult, long-term psychiatric facility. Eight participants and two occupational therapists were interviewed. Findings revealed two main themes, relating to the essence of the program and personal growth of the participants, supplemented by six sub-themes. The findings suggest that initiatives, such as the Greenhouse Program, are an appropriate intervention that occupational therapy professionals can use in adult inpatient psychiatric facilities.     

Compliance, conversion, and category induction

When children hear an object referred to with a label that is moderately discrepant from its appearance, they frequently make inferences about that object consistent with the label rather than its appearance. We asked whether 3-year-olds actually believe these unexpected labels (i.e., conversion) or whether their inferences simply reflect a desire to comply with the considerable experimental demands of the induction task (i.e., compliance). Specifically, we asked how likely children would be to pass an unexpected label on to another person who had not been present during the labeling event. Results showed that children who used an unexpected label as the basis for inference passed that label on to another person about as often as they could remember it. This suggests that children’s label-based inferences do reflect conversion rather than mere compliance.     

The use of personality test norms in work settings: Effects of sample size and relevance

The value of personality test norms for use in work settings depends on norm sample size (N) and relevance, yet research on these criteria is scant and corresponding standards are vague. Using basic statistical principles and Hogan Personality Inventory (HPI) data from 5 sales and 4 trucking samples (N range=394–6,200), we show that (a) N>100 has little practical impact on the reliability of norm‐based standard scores (max=±10 percentile points in 99% of samples) and (b) personality profiles vary more from using different norm samples, between as well as within job families. Averaging across scales, T‐scores based on sales versus trucking norms differed by 7.3 points, whereas maximum differences averaged 7.4 and 7.5 points within the sets of sales and trucking norms, respectively, corresponding in each case to approximately ±14 percentile points. Slightly weaker results obtained using nine additional samples from clerical, managerial, and financial job families, and regression analysis applied to the 18 samples revealed demographic effects on four scale means independently of job family. Personality test developers are urged to build norms for more diverse populations, and test users, to develop local norms to promote more meaningful interpretations of personality test scores.     

I Dig Therefore We Are: Community Archaeology,Place‐based Social Identity,and Intergroup Relations Within Local Communities

Community involvement in archaeological digs aims to reconnect people with the history and heritage of where they live. This paper applies social psychological theories to understand how community archaeological projects create opportunities for place‐based social identity and positive intergroup relations. Focus groups were conducted across five areas of Greater Manchester (UK) with 24 participants who volunteered for Dig Greater Manchester, a community archaeology initiative. The focus groups aimed to understand how experiences of participating in digs and exploring local heritage modified, strengthened or initiated identification with place and community, thus moving from individual levels to social levels of identity. The findings offer insight as to the ways in which people make sense of their own—and others'—place‐based social identities as a result of participating in community archaeological digs . Copyright © 2017 John Wiley & Sons, Ltd.