Using Stimulus-Stimulus Pairing and Direct Reinforcement to Teach Vocal Verbal Behavior to Young Children With Autism

In this study the effect of a stimulus-stimulus pairing procedure was used as part of a clinical investigation to increase vocalizations for two young children diagnosed with autism. This procedure involved pairing a vocal sound with a preferred stimulus (e.g., toy) to condition automatic reinforcement. In addition, this study assessed the effects of a direct reinforcement procedure to bring a vocalization under echoic control following the pairing procedure for 1 of the participants. The results showed the pairing procedure was used successfully to increase a vocalization for one of the participants, and the vocalization was brought under echoic control.     

Bayesian parsimonious covariance estimation for hierarchical linear mixed models

We consider a non-centered parameterization of the standard random-effects model, which is based on the Cholesky decomposition of the variance-covariance matrix. The regression type structure of the non-centered parameterization allows us to use Bayesian variable selection methods for covariance selection. We search for a parsimonious variance-covariance matrix by identifying the non-zero elements of the Cholesky factors. With this method we are able to learn from the data for each effect whether it is random or not, and whether covariances among random effects are zero. An application in marketing shows a substantial reduction of the number of free elements in the variance-covariance matrix.     

Arm’s Length Bodies in Brazil: Contradictions and Challenges

Despite initial criticism, and often driven by performance contracts, arm’s length bodies (ALBs) have been expanding in Brazil within the context of state reform. The creation of ALBs is the strategy by which Brazilian governments have sought to address or evade the rigidity of public sector rules. Governments from different political orientations have adopted various types of ALBs with the aim of achieving some administrative agility and flexibility in the delivery of public services. The advances in flexibility are larger than the granting of autonomy for the new organizations, revealing persistent hierarchical relationships between the government and ALBs.     

Mental Health Treatment Barriers Among Racial/Ethnic Minority Versus White Young Adults 6 Months After Intake at a College Counseling Center

Abstract

Objective: This study examined mental health treatment barriers following intake at a counseling center among racially/ethnically diverse college students. Methods: College students (N = 122) seen for intake at a college counseling center in 2012–2013 completed self-reports of depressive symptoms, suicidal ideation, and mental health treatment barriers 6 months later. Results: Racial/ethnic minority students less often reported previous mental health treatment and treatment after being seen at the counseling center, compared with white students. They also endorsed more treatment barriers—most commonly, financial concerns and lack of time—and more often endorsed stigma-related concerns. Treatment barriers were associated with not following through with counseling center recommendations and with greater depressive symptom severity but not with suicidal ideation during follow-up. Conclusions: Improving mental health treatment seeking among racial/ethnic minority college students should involve decreasing treatment barriers, improving access to affordable options, providing flexible scheduling or time-limited options, and decreasing stigma.,     

The Strategic Management of Government Affairs in China: How Multinational Corporations in China Interact With the Chinese Government

This study addresses how multinational corporations (MNCs) interact with government by examining the strategic management of government affairs in 25 MNCs in China from the perspectives of public relations and corporate political activity. Twenty-seven qualitative interviews were conducted. Results show that 16 of the 25 MNC include their government affairs managers in strategic management. Government affairs contributes to the process by aligning their business goals with the development of policies and regulations. Government affairs managers play 4 roles in the process according to the level of regulation and the frequency of external environmental changes of the MNCs: the business developer, expert prescriber, senior advisor, and internal consultant. Government affairs specialists use direct and indirect sources to gather information relevant to environmental scanning. Results also suggest a positive relationship between the participation of government affairs in strategic management and excellence in government affairs. However, in addition to excellence in government affairs, organizational mechanisms of management, organizational expectation and culture, and the nature of the MNC's industry also affect the integration of government affairs with the overall strategic management.     

System Perspectives of Experts and Farmers Regarding the Role of Livelihood Assets in Risk Perception: Results from the Structured Mental Model Approach

Pesticide application is increasing and despite extensive educational programs farmers continue to take high health and environmental risks when applying pesticides.
The structured mental model approach (SMMA) is a new method for risk perception analysis. It embeds farmers' risk perception into their livelihood system in the elaboration of a mental model (MM). Results from its first application are presented here. The study region is Vereda la Hoya (Colombia), an area characterized by subsistence farming, high use of pesticides, and a high incidence of health problems. Our hypothesis was that subsistence farmers were constrained by economic, environmental, and sociocultural factors, which consequently should influence their mental models.
Thirteen experts and 10 farmers were interviewed and their MMs of the extended pesticide system elicited. The interviews were open-ended with the questions structured in three parts: (i) definition and ranking of types of capital with respect to their importance for the sustainability of farmers' livelihood; (ii) understanding the system and its dynamics; and (iii) importance of the agents in the farmers' agent network. Following this structure, each part of the interview was analyzed qualitatively and statistically. Our analyses showed that the mental models of farmers and experts differed significantly from each other.
By applying the SMMA, we were also able to identify reasons for the divergence of experts' and farmers' MMs. Of major importance are the following factors: (i) culture and tradition; (ii) trust in the source of information; and (iii) feedback on knowledge.     

Comparing drug use between welfare-receiving arrestees and non-welfare-receiving arrestees

The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (PRWORA) symbolized a comprehensive change to the nation's welfare system. Despite several provisions within PRWORA that focus on the use of illegal drugs, few studies have attempted to identify the prevalence of illegal drug use among welfare recipients. Moreover, no scholarly works have compared rates of drug use in welfare-receiving populations to those of non-welfare-receiving populations with an objective measure of drug use. In the current study, urine specimens were collected from 1,572 arrestees interviewed through Houston's Arrestee Drug Abuse Monitoring (ADAM) Program in 1999. Drug positive rates are compared between welfare-receiving arrestees (n = 116), non-welfare receiving arrestees living below the poverty level (n = 539), and non-welfare receiving arrestees living above the poverty level (n = 917). Welfare-receiving arrestees were more likely to be female, older, less educated, and to test positive for opiates and benzodiazepines than the other subgroups. Implications for welfare reform policy are discussed in light of the current findings.     

A Mixture Model for Longitudinal Partially Ranked Data

This article discusses the use of mixture models in the analysis of longitudinal partially ranked data, where respondents, for example, choose only the preferred and second preferred out of a set of items. To model such data we convert it to a set of paired comparisons. Covariates can be incorporated into the model. We use a nonparametric mixture to account for unmeasured variability in individuals over time. The resulting multi-valued mass points can be interpreted as latent classes of the items. The work is illustrated by two questions on (post)materialism in three sweeps of the British Household Panel Survey.