Work Volition and Job Satisfaction: Examining the Role of Work Meaning and Person–Environment Fit

Building on core principles within the Psychology‐of‐Working Framework (PWF; Blustein, 2006 , 2008 ), the authors examined mediators that may explain the link between work volition and job satisfaction among employed adults (135 women, 145 men). A structural equation model was tested hypothesizing that person–environment fit and work meaning would fully mediate the work volition–job satisfaction link. Results suggested that the reason work volition related to job satisfaction was because of stronger perceived fit with one's work environment and greater perceived meaning at work. In total, the predictor variables accounted for 82% of the variance in job satisfaction. Based on these findings, clinicians are encouraged to help clients understand the unique factors that may be limiting their work volition and to specifically target barriers that are amenable to change.     

Why Do We Observe Stockless Operations on the Internet? Stockless Operations Under Competition

Due to the proliferation of electronic commerce and the development of Internet technologies, many firms have considered new pricing‐inventory models. In this paper, we study the role of stockless (i.e., zero‐inventory) operations in online retailing by a considering duopoly competition in which two retailers compete to maximize profit by jointly optimizing their pricing and inventory decisions. In our model, the retailers are allowed to choose either an in‐stock policy or stockless operations with a discounted price. We first present the characteristics and properties of the equilibrium. We then demonstrate that the traditional outcome of asymmetric Bertrand competition is observed under head‐to‐head competition. However, when the two firms choose different operational policies, with corresponding optimal pricing, they can share the market under certain conditions. Finally, we report interesting observations on the interaction between pricing and inventory decisions obtained from an extensive computational study.     

The most-cited statistical papers

We attempt to identify the 25 most-cited statistical papers, providing some brief commentary on each paper on our list. This list consists, to a great extent, of papers that are on non-parametric methods, have applications in the life sciences, or deal with the multiple comparisons problem. We also list the most-cited papers published in 1993 or later. In contrast to the overall most-cited papers, these are predominately papers on Bayesian methods and wavelets. We briefly discuss some of the issues involved in the use of citation counts.     

Resident Fathers’ Pregnancy Intentions,Prenatal Behaviors,and Links to Involvement With Infants

Using data from the Early Childhood Longitudinal Study‐Birth Cohort, 9‐month resident father surveys (N= 6,816), this paper examines the association between male pregnancy intentions, prenatal behaviors, and postbirth father involvement. Findings indicate that prenatal behaviors are associated with five domains of father involvement. Men who did not want the pregnancy are less likely to exhibit paternal warmth following the birth, whereas men who wanted the pregnancy sooner than it occurred are more likely to exhibit nurturing behaviors. The influence of fathers’ pregnancy intentions and prenatal behaviors on postbirth involvement is for the most part not dependent on child gender. Findings suggest that prenatal programs that encourage fathers to actively participate in the pregnancy may be beneficial to later child well‐being.     

When Numbers Began to Count for Health Policy: A Review Essay*

Books reviewed in this article: Jack M. Hollander , The Real Environmental Crisis: Why Poverty, Not Affluence, Is the Environment's Number One Enemy Glenn Firebaugh , The New Geography of Global Income Inequality Nancy E. Riley and James Mccarthy , Demography in the Age of the Postmodern Catherine Campbell , ‘Letting Them Die’: Why HIV/AIDS Intervention Programmes Fail Konstantinos Kapparis , Abortion in the Ancient World     

Friendship, transactive dialogues, and the development of scientific reasoning

This study investigated the significance of friendship for scientific reasoning. We had two main goals: First, assess whether collaborations between friends fostered greater development of scientific reasoning than collaborations between acquaintances, and second, identify which features of friends' collaborative dialogues mediated their greater problem solving accuracy. Fifth graders collaborated on isolation of variables problems of varying difficulty with either a friend or an acquaintance. The results showed that adolescents paired with friends obtained higher problem solving accuracy than adolescents paired with acquaintances during both the collaborative and the posttest sessions. However, the cognitive advantages of working with a friend were only evident in the most difficult isolation of variables problems. Analyses of friends' and acquaintances' dialogues showed that friends were more likely than acquaintances to evaluate their solutions, justify their proposals spontaneously, elaborate and critique each other's reasoning, and engage in transactive discussions. Evaluating outcomes and participating in transactive conflicts were significantly associated with better problem solving, and consequently these may be the two key mechanisms through which friendship effects developmental changes in scientific reasoning. The results are discussed in terms of the need to understand developmental features of relationships and how these features mediate cognitive development and the need to take a longitudinal approach to the study of the relation between transactive dialogues and the development of scientific reasoning.     

An improved time-space lower bound for tautologies

We show that for all reals c and d such that c ² d<4 there exists a positive real e such that tautologies of length n cannot be decided by both a nondeterministic algorithm that runs in time n ^c , and a nondeterministic algorithm that runs in time n ^d and space n ^e . In particular, for every \(d<\sqrt[3]{4}\) there exists a positive e such that tautologies cannot be decided by a nondeterministic algorithm that runs in time n ^d and space n ^e .