Childcare and labor force participation in the Netherlands: the importance of attitudes and opinions

We analyze the joint decision of participating in the labor force and using paid childcare made by mothers in two-parent households with pre-school age children in the Netherlands. Both the choice to use paid childcare and the number of hours taken up are analyzed. The data, collected in 2004, contains information on economic factors and on attitudes and opinions on childcare and labor. While acknowledging potential endogenous selection effects and bidirectional causality implying problems of endogeneity with the attitudes and opinions, our results show that, in addition to economic factors, attitudes and opinions are important when explaining the decision to participate in the labor force and to use paid childcare services, but they are less important when it comes to the decision on the number of hours childcare is taken up.     

Validation of qualitative microbiological test methods

This paper considers a statistical model for the detection mechanism of qualitative microbiological test methods with a parameter for the detection proportion (the probability to detect a single organism) and a parameter for the false positive rate. It is demonstrated that the detection proportion and the bacterial density cannot be estimated separately, not even in a multiple dilution experiment. Only the product can be estimated, changing the interpretation of the most probable number estimator. The asymptotic power of the likelihood ratio statistic for comparing an alternative method with the compendial method, is optimal for a single dilution experiment. The bacterial density should either be close to two CFUs per test unit or equal to zero, depending on differences in the model parameters between the two test methods. The proposed strategy for method validation is to use these two dilutions and test for differences in the two model parameters, addressing the validation parameters specificity and accuracy. Robustness of these two parameters might still be required, but all other validation parameters can be omitted. A confidence interval‐based approach for the ratio of the detection proportions for the two methods is recommended, since it is most informative and close to the power of the likelihood ratio test. Copyright © 2014 John Wiley & Sons, Ltd.     

The Role of Economic Incentives and Attitudes in Participation and Childcare Decisions

We analyzed the participation and childcare decisions made by mothers in two-parent households with children aged 0–12 in the Netherlands, paying special attention to the role of attitudes regarding work and care. In a multinomial logit model we distinguished between not working, a small part-time job, and a larger job. For working mothers we considered no childcare, informal, and formal childcare. We accounted for potential endogeneity of attitudes. The results showed that the role of the price of formal childcare in the decision-making process was negligible. A higher earnings capacity increased the take-up of larger jobs and formal childcare. Modern attitudes had a strong impact on the decisions to work and to use childcare.     

Social work education in Zimbabwe: Strengths and weaknesses,issues and challenges

Social work education in Zimbabwe began with the establishment of the School of Social Work in 1964. Prior to this, the country relied on social workers trained in Britain, South Africa and Zambia . The initial focus of social work education was on training cadres who would work with groups of unemployed youths and women in urban areas. Thus, the programmes were introduced to address urban social ills. The major strengths of colonial social work education were that it provided the foundation for professional social work practice and it responded effectively to the practice needs of social work agencies. There were, however, some weaknesses such as dependence on Western literature and expatriate teachers and an orientation towards curative social work instead of developmental social work. Since the attainment of independence, the School of Social Work has endeavoured to make social work education more responsive to the development needs of the country. Great strides have also been made in developing indigenous teaching materials. The challenge facing social work education in Zimbabwe is to make it relevant and appropriate, particularly in terms of preparing social workers to address structural problems in society.     

Questioning Consilience and Autonomy in Self-Determination Theory: A Critique and Hermeneutic-Phenomenological Alternative

This paper offers a theoretical analysis of Self-Determination Theory (SDT) and its claims regarding human autonomy. Self-determination theorists have advanced a form of self-regulated, engaged behavior (i.e., autonomy), founded upon on a consilient account of human motivation that assumes multiple, hierarchical levels of organization and causation (e.g., biological, psychological, and social). Autonomy, from this perspective, is taken to emerge from underlying biological mechanisms, but also able to exert its own causal effects in the world as a unique psychological phenomenon. We contend that in theorizing this way, self-determination theorists have invoked a mixed discourse of mechanism and autonomy that leaves important questions unanswered, perhaps most importantly those concerning how autonomy as a kind of volition can fit coherently in the mechanistic account of world that they advocate. We then offer an alternative perspective based upon the work of various hermeneutic-phenomenological thinkers in philosophy and psychology. This alternative perspective conceptualizes human phenomena such as autonomy and motivation in agentic terms, emphasizing meaningful participation in possibility-laden contexts of everyday practices.     

Collaboration,Partnership, Policy,and Practice in Career Development

This article discusses the importance of collaboration among professional organizations, governmental entities, and counselors in behalf of career development. Examples of possible international and national collaborative initiatives and policy emphases are described.     

A new destructive Poisson odd log-logistic generalized half-normal cure rate model

We propose a new cure rate survival model by assuming that the initial number of competing causes of the event of interest follows a Poisson distribution and the time to event has the odd log-logistic generalized half-normal distribution. This survival model describes a realistic interpretation for the biological mechanism of the event of interest. We estimate the model parameters using maximum likelihood. For different sample sizes, various simulation scenarios are performed. We propose the diagnostics and residual analysis to verify the model assumptions. The potentiality of the new cure rate model is illustrated by means of a real data.     

Log-Weibull extended regression model: Estimation,sensitivity and residual analysis

The failure rate function commonly has a bathtub shape in practice. In this paper we discuss a regression model considering new Weibull extended distribution developed by Xie et al. (2002) that can be used to model this type of failure rate function. Assuming censored data, we discuss parameter estimation: maximum likelihood method and a Bayesian approach where Gibbs algorithms along with Metropolis steps are used to obtain the posterior summaries of interest. We derive the appropriate matrices for assessing the local influence on the parameter estimates under different perturbation schemes, and we also present some ways to perform global influence. Also, some discussions on case deletion influence diagnostics are developed for the joint posterior distribution based on the Kullback–Leibler divergence. Besides, for different parameter settings, sample sizes and censoring percentages, are performed various simulations and display and compare the empirical distribution of the Martingale-type residual with the standard normal distribution. These studies suggest that the residual analysis usually performed in normal linear regression models can be straightforwardly extended to the martingale-type residual in log-Weibull extended models with censored data. Finally, we analyze a real data set under a log-Weibull extended regression model. We perform diagnostic analysis and model check based on the martingale-type residual to select an appropriate model.