Relation of Goal Setting and Goal Sharing to Performance and Conflict for Interdependent Tasks

Despite the prevalence of goal setting in organizations, researchers have not thoroughly examined the implications of goal setting to work outcomes in interdependent work settings. A field survey (n= 442) assessed the relation of goal setting and goal sharing, the extent to which others are aware of an individual's work goal, to performance and conflict across varying levels of task interdependence. The results of moderated regression analyses demonstrate that in highly interdependent tasks, the use of goal setting resulted in lower performance levels. Moreover, goal setting and goal sharing in highly interdependent tasks resulted in individuals' reporting more somatic symptoms. The results are discussed in terms of clarifying the role of goal setting for interdependent tasks.     

Effects of the Mechanism of Receptor-Mediated Gene Expression on the Shape of the Dose-Response Curve

A mathematical model of receptor-mediated gene expression that includes receptor binding of natural and xenobiotic ligands, protein synthesis and degradation, and metabolism of the xenobiotic ligand was created to identify the determinants of the shape of the dose-response profile. Values of the model's parameters were varied to reflect alternative mechanisms of expression of the protein. These assumptions had dramatic effects on the computed response to a bolus dose of the xenobiotic ligand. If all processes in the model exhibit hyperbolic kinetics, the dose-response curves can appear sigmoidal but actually be linear with a positive slope at low doses. The slope of the curve only approached zero at low dose, indicative of a threshold for response, if binding of the xenobiotic ligand to the receptor exhibited positive cooperativity (ligand binding at one site increases the affinity for ligand at another binding site on the receptor). Positive cooperativity in the rate-limiting step of protein synthesis produced dose-response curves which were "U-shaped" at low doses, also indicative of a threshold. Positive cooperativity in the metabolism of the xenobiotic ligand produced dose-response curves that increased more rapidly than linearly with increasing dose. The model illustrates the fact that response cannot be predicted from qualitative mechanistic arguments alone; any assessment of risk to health from xenobiotic chemicals must be based on a detailed quantitative examination of the kinetic behavior of each chemical species individually.     

The Implications of Learning Styles for Training and Development: A Discussion of the Matching Hypothesis

This review paper examines the effect of matching and mismatching learning style and learning activity and matching and mismatching trainer and trainee learning style on learning achievement. It also explores the possibility of creating a match by promoting learner adaptability or modifying the trainer's training style. The implications of this discussion for training and development are considered.     

The Role of Effort in Shifting Preference for Feedback Stimuli

ABSTRACT

Researchers have examined preference for the format of delivery of feedback, however little research has examined strategies to increase feedback and praise desirability. The current study aimed to evaluate whether preference shifted for stimuli that signaled work and for manager-praise stimuli that were delivered after work. Moreover, we sought to understand if these preference shifts were greater when the work was higher-effort compared to lower-effort work tasks (a phenomenon described in the basic literature as within-trial contrast). The study took place in a simulated work environment. Sixteen university students clicked on a shape that produced the work task, completed a mock medical data-entry task, and received manager-praise on an FR1 and FR20 schedule. At the start of the study and following each contingency exposure trials, they completed a preference assessment for both the shapes and the manager-feedback stimuli. The primary dependent variable was the percentage of preference change for two categories of stimuli – shapes presented at the beginning of trials that signaled which condition participants were in and manager-praise stimuli presented at the end of trials. Preference for the shape stimuli for both high- and low-effort stimuli decreased indicating that stimuli that signal work may become less preferred. Preference for the manager-praise stimuli for both high- and low-effort stimuli increased suggesting that stimuli that follow work may become more preferred. Overall, these data suggest that the conditions under which managers deliver feedback and praise may influence preference for those stimuli.     

Neighborhood context and racial differences in early adolescent sexual activity

Evidence suggests that African American youths initiate sexual activity at earlier ages than do European American or Latino youths. Using data from a multilevel study in Chicago, we developed and tested a neighborhood-based model of the timing of first adolescent intercourse that emphasizes the impact of neighborhood structural disadvantage and collective efficacy on early sexual activity (at ages 11 to 16). In turn, we explored the extent to which neighborhood factors account for racial differences in the timing of first intercourse. The findings indicate that demographic background, family processes, peer influences, and developmental risk factors account for about 30% of the baseline increased likelihood of early sexual onset for African American youths compared with European American youths. However, a significant residual racial difference remained even after we considered a host of micro-level factors. Neighborhood-level concentrated poverty largely explained this residual racial difference. Collective efficacy also independently contributed to the delay of sexual onset. No significant baseline difference in age of sexual initiation was found between Latino and European American youths.     

Effects of information on college students' perceptions of antidepressant medication

The authors examined the impact of pharmaceutical companies' advertisements on college students' perceptions of depression and concomitant treatment with antidepressants among 13 male and 31 female undergraduates from a midwestern university. The students were randomly assigned to groups that read either pharmaceutical company advertisements or scientific information about depression and its treatment. The analysis revealed that 40% of the women in the advertisement condition as opposed to 1 woman (6%) in the scientific condition rated themselves as having mild, moderate, or severe depression on the Beck Depression Inventory, second edition. Women in the advertisement condition were significantly more likely to believe that depression required treatment with antidepressant medication and were more willing than women in the scientific condition to suggest antidepressant treatment to others.     

The competitive advantage: strategic thinking for physician leaders

Physician executives should manage their career strategies like a well-run company. Learn how to start thinking aout your career strategy.     

The Home Office and random allocation experiments

By examining the history of the random experiment in the Home Office in the United Kingdom, this article demonstrates that research is not an altogether rational process and that fashion, personality, and politics are at least as important as science and evidence when setting research and policy programs and determining methodologies. The article also shows that even in 1970, the research world was a village and that issues and fashions on one side of it could determine the outcome of decisions on the other side, even though they had no direct relevance. On a more optimistic note, the article shows how the fashions go in cycles so that if you could not get the research funded in the last cycle, just wait 20 years for the cycle to come around and try again.