‘Age-hardened alloy’ based on bulk polycrystalline oxide ceramic

We report here for the first time the development of ‘age-hardened/toughened’ ceramic alloy based on MgO in the bulk polycrystalline form. This route allows for the facile development of a ‘near-ideal’ microstructure characterized by the presence of nanosized and uniformly dispersed second-phase particles (MgFe₂O₄) within the matrix grains, as well as along the matrix grain boundaries, in a controlled manner. Furthermore, the intragranular second-phase particles are rendered coherent with the matrix (MgO). Development of such microstructural features for two-phase bulk polycrystalline ceramics is extremely challenging following the powder metallurgical route usually adopted for the development of bulk ceramic nanocomposites. Furthermore, unlike for the case of ceramic nanocomposites, the route adopted here does not necessitate the usage of nano-powder, pressure/electric field-assisted sintering techniques and inert/reducing atmosphere. The as-developed bulk polycrystalline MgO–MgFe₂O₄ alloys possess considerably improved hardness (by ~52%) and indentation toughness (by ~35%), as compared to phase pure MgO.     

The social nature of benevolent sexism and the antisocial nature of hostile sexism: Is benevolent sexism more likely to manifest in public contexts and hostile sexism in private contexts?

Previous research converges on demonstrating that benevolent sexism (BS) is socially approved, whereas hostile sexism (HS) is socially disapproved. We postulated that a sample of married women would be likely to report that their husbands express hostile sexist attitudes and engage in related actions towards them more in private than public contexts, where they lie concealed from public censure. By contrast, the women would report that their husbands would be likely to express benevolent sexist attitudes and engage in related actions more in public than private contexts, where they are reinforced not only by their target (i.e. wife), but also by significant others and the society at large. We tested these hypotheses with a sample of Black, heterosexually married Zimbabwean women (n = 109, mean age = 31.83). Results supported our hypotheses: the women reported hostile sexist attitudes and actions to be more likely to occur in private than public contexts; on the other hand, they reported benevolent sexist attitudes and actions to be more likely in public than private contexts. We conclude that differences in social approval of BS and HS account for these results.     

Development and Initial Validation of a Scale Measuring the Beliefs of Educators Regarding Response to Intervention

This article presents information on the development and initial validation of the 16-item Response to Intervention (RTI) Beliefs Scale. The scale is designed to measure the extent to which educators working in schools hold beliefs consistent with the tenets of RTI. The authors administered the instrument to 2,430 educators in 62 elementary schools in the fall of 2007 and 2,443 educators in 68 elementary schools in the spring of 2008. Exploratory, single-level confirmatory, and multilevel confirmatory factor analysis procedures were used to examine construct validity. Results supported a correlated 3-factor model (Academic Abilities and Performance of Students with Disabilities, Data-Based Decision Making, and Functions of Core and Supplemental Instruction) at both the school and educator levels of analysis. Furthermore, the factor scores derived from the model demonstrated significant, positive relations to RTI implementation. Reliability estimates for two of the three factor scores exceeded.70. Implications for research on educator beliefs and implementation of RTI as well as implications for school psychologists supporting RTI implementation are discussed.     

The acceptability and preference for the psychological treatment of PTSD

The acceptability and preference of psychological treatments is important in understanding patient treatment seeking, choice, engagement and attrition and possibly treatment response in health care. The acceptability of, and preference for, 14 different types of psychological treatment for posttraumatic stress disorder (PTSD) were investigated in a student population through invitation to participate in a web-based survey. Respondents were asked to rate each treatment on 10 scales and to rank the treatments in order of preference. Respondents were also asked whether they would seek treatment themselves, recommend treatment to friends and family, feel stigmatised by suffering from PTSD, had any prior knowledge of the treatments and if this had been positive or negative and whether they had a history of psychological problems or treatment. A total of 330 respondents completed the survey. A past or current history of psychological problems and treatment was surprisingly high. Almost all respondents indicated that they would seek or recommend treatment in spite of high levels of stigmatisation. Factor analysis of the 10 scales indicated two factors: Endorsement and Discomfort. Rank ordering on preference and Endorsement scores was highly consistent. The highly preferred and endorsed treatments involved cognitive therapy, exposure or psycho-education in spite of high levels of discomfort anticipated with exposure. Treatments involving new technologies, EMDR and psychodynamic psychotherapy received the lowest Endorsement and preference. There was a modest influence of prior knowledge of a treatment.     

Some effects of stimulant medication on response allocation: a double-blind analysis

Children who are diagnosed with attention deficit hyperactivity disorder (or who engage in behavior consistent with such a diagnosis) are often prescribed stimulant medications for hyperactive or inattentive behaviors. However, the mechanisms by which stimulant medications affect individuals' behavior are rarely evaluated. The purpose of the current study was to evaluate the effects of stimulant medication on response allocation when antecedents and consequences were held constant and equated. Results indicated that the presence of an amphetamine medication (Adderall) influenced response allocation across two concurrently available responses while all other stimulus conditions were held constant.     

The effect of contingent reinforcement on target variables in outpatient psychotherapy for depression: a successful and unsuccessful case using functional analytic psychotherapy

The current study investigated a behavior-analytic treatment, functional analytic psychotherapy (FAP), for outpatient depression utilizing two single-subject A/A+B designs. The baseline condition was cognitive behavioral therapy. Results demonstrated treatment success in 1 client after the addition of FAP and treatment failure in the 2nd. This study highlights the challenges in measuring treatment progress and outcome idiographically in this population.     

Sexual Attitudes and Instructional Set Affect Estimates of Risk and Response Effectiveness

Two hundred and eleven undergraduate men and women were assigned to different instructional set conditions and asked to rate (1) the sexual risk depicted in a set of written items describing problem situations undergraduate women might face when dating or interacting socially with men, and (2) the effectiveness of responses to these situations, described by a set of response codes. Results revealed that sexual attitudes and instructional set were the strongest predictors of both ratings. Gender did, however, predict risk ratings for stranger and authority figure situations, with women rating these situations as more risky than men. In addition, women assigned to the risk instructional set condition rated refusal responses as more effective in decreasing risk than did men in the same condition. In contrast, women assigned to the popularity instructional set condition rated the same refusal responses as less effective in increasing popularity than did men in that condition.

Engaging Australian Aboriginal youth in mental health services

It is currently estimated that up to 40% of Aboriginal youth (aged 13–17) will experience some form of mental health problem within their lifetime. Of greater concern is the evidence that indicates that Aboriginal youth fail to access mental health services commensurate with this need. This is due, in part, to the characteristically monocultural nature of service delivery of existing services. This paper overviews a model that has been developed specifically for the engagement of Aboriginal youth (aged 13–17 years) in mental health settings. Importantly, a mix of urban (N = 43) and rural (N = 68) Aboriginal youth were represented within the sample to determine its efficacy across different language and tribal groups. The model proved to be effective in engaging 97% of Aboriginal youth (n = 108), with only a small number not effectively engaged (n = 3). The model provides a foundation for the further development of evidence‐based models of best practice that have so far provided to be elusive within this complex field.