Virtual conversation partner for adults with autism

Autistic Spectrum Disorder (ASD) is notable for severely impaired reciprocal social interaction skills relative to language and intellectual abilities, presenting a major barrier to social integration and vocational success. Evidence-based interventions to address these needs are lacking. We report on the development of a small, prototype conversation simulation to teach conversational skills to adolescents and adults with ASD and average to superior intellectual abilities. We also report on a test of the feasibility and acceptability of the simulation approach with a sample of the target population. The simulation engages the user in a virtual conversation with an on-screen partner whose reactions provide naturalistic feedback geared to the appropriateness of the learner's response choices. The prototype simulation, which provides for up to 12 potentially unique multi-turn conversations, was used over a period of 2 weeks by 16 adolescents and adults who then rated statements about the system on a linear scale of 1 (disagreement) to 5 (high agreement). The participants highly endorsed the majority of positive statements about the quality and credibility of the interaction and the virtual conversation partner. In contrast, agreement with positive statements about instructional features external to the conversation was moderate. Unexpectedly, most participants strongly agreed that using the simulation had been helpful to them. Further development and testing in the context of a controlled study with randomized assignment to control and experimental groups are needed to determine whether this approach is effective in improving real-world pragmatic language behavior of high-functioning adults with ASD.     

Brain rCBF and performance in visual imagery tasks: Common and distinct processes

The present study was designed to discover whether variations in normalised regional cerebral blood flow (rCBF) in different brain areas predict variations in performance of different imagery tasks. Positron emission tomography (PET) was used to assess brain activity as 16 participants performed four imagery tasks. These tasks were designed so that performance was particularly sensitive to the participant's ability to form images with high resolution, to generate images from distinct segments, to parse imaged forms into parts while inspecting them, or to transform (rotate) images. Response times and error rates were recorded. Multiple regression analyses revealed that variations in most brain areas predicted variations in performance of only one task, thus demonstrating that the four tasks tap largely independent imagery processes. However, we also found that some underlying processes were recruited by more than one task, particularly those implemented in the occipito‐parietal sulcus, the medial frontal cortex, and Area 18.     

The Significance of Strategic Community Engagement in Recruiting African American Youth & Families for Clinical Research

We present baseline data and describe the utility of a community engaged, culturally relevant approach to recruiting African American youth and families for phase I of The AAKOMA Project. The AAKOMA Project is a two phase treatment development study to improve mental health service use among depressed African American youth. We completed capacity building activities using a community engaged framework and Community Based Participatory Research (CBPR) methods. Replicating the (Alvarez et al. in West J Nurs Res 28:541–560, 2006) model of systematic community outreach enhanced our ability to effectively recruit partners and evaluate outreach efforts as demonstrated by our Recruitment Success Factor (RSF—i.e. ‘an adjusted ratio of eligible participant yield to contacts made’). Using the chi-square goodness-of-fit statistic; we compared the RSFs of the various modes of participant study entry to determine which was most effective. Our target enrollment was 56 persons. We recruited 130 and enrolled 57. Our baseline data is drawn from a gender balanced and socioeconomically diverse sample who participated in youth focus groups and individual interviews and adult focus groups. We identified 3 study participant referral modes (self-referral, provider referral and participant-to-participant referral) with multiple sources per mode and an overall RSF of 0.41. Study findings support the effectiveness of assiduous and systematic community interaction, reflective review of recruitment efforts and the importance of disseminating information on strategic recruitment processes for engaging diverse populations in clinical research.     

Reanalysis and perspective in the heat--aggression debate

B. J. Bushman, M. C. Wang, and C. A. Anderson argued that a reanalysis of E. G. Cohn and J. Rotton's Minneapolis data shows no inverted-U curvilinear relationship between temperature and aggression. Although B. J. Bushman et al.'s claim of no general inverted-U trend in the data might well be supported statistically, more careful examination of the subset of the data most likely to include the hottest temperatures in the study may offer at least some support for the inverted-U relationship. Aggregating data to describe a general trend minimizes the influence of outliers that may reflect alternative relationships, and such alternatives may be important practically and theoretically.     

"I want to read stuff on boys": white,Latina, and black girls reading seventeen magazine and encountering adolescence

This study is based on interviews with four focus groups consisting of fourteen white, Latina, and black girls, ages 13 to 16 years, from diverse backgrounds. The objectives of the study are to gain insight into what forum girls use to learn about the adolescent experience and to examine teenage girls' views of their sexuality and femininity. The girls' discussion of their lives and perceptions of the teen magazine Seventeen reveal a displacement of female sexuality. The magazine's message to teenage girls of gaining self-worth through emphasized femininity seems to resonate with these girls regardless of class and race. We conclude that responsible adults need to challenge the distorted media images of adolescent development and teenage girls' sexuality.     

Effectiveness of training in organizations: a meta-analysis of design and evaluation features

The authors used meta-analytic procedures to examine the relationship between specified training design and evaluation features and the effectiveness of training in organizations. Results of the meta-analysis revealed training effectiveness sample-weighted mean ds of 0.60 (k = 15, N = 936) for reaction criteria, 0.63 (k = 234, N = 15,014) for learning criteria, 0.62 (k = 122, N = 15,627) for behavioral criteria, and 0.62 (k = 26, N = 1,748) for results criteria. These results suggest a medium to large effect size for organizational training. In addition, the training method used, the skill or task characteristic trained, and the choice of evaluation criteria were related to the effectiveness of training programs. Limitations of the study along with suggestions for future research are discussed.     

Choice, contingency discrimination, and foraging theory

Four pigeons were trained on eight or nine pairs of independent concurrent variable-interval schedules. The range of reinforcement ratios included extreme ratios (up to 532 to 1). Large samples of stable performance were gathered. Contrary to the findings of Davison and Jones (1995), the generalized matching law described choice more accurately than a contingency-discriminability model. Taking small samples (5 to 10 sessions) and applying a more liberal stability criterion used by Davison and Jones only increased the unsystematic variance in the data and in estimates of generalized-matching-law sensitivity. Because changing to dependent scheduling and inserting a changeover delay had no systematic effect, the deviations from generalized matching reported by Davison and Jones probably arose from imperfectly discriminated stimuli. Analysis of visits revealed that visits to the nonpreferred alternative were brief and approximately constant. When choice between the preferred (rich) and nonpreferred (lean) alternatives, regardless of position, was analyzed according to the generalized matching law, sensitivities approximated 1.0, with bias in favor of the lean alternative. This bias, which arose from an excessive frequency of visits to the lean alternative, explains undermatching as the result of fitting one line to a choice relation that consists of two displaced lines, both with a slope of 1.0. The pattern of deviation from the generalized matching line confirmed this account. The findings suggest an alternative analysis of choice that focuses on probability of visiting the lean alternative as the dependent variable. This probability was directly proportional to ratio of reinforcement. Matching, undermatching, and overmatching may all be explained by a view of concurrent performance based on foraging theory, in which responding occurs primarily at the rich alternative and is occasionally interrupted by brief visits to the lean alternative.