Differential Correlates of Positive-Based and Negative-Based Incentives in Motivation

We studied the distinction between two contrasting types of positive incentive value, one type based on approaching positive affect (positive-based value or PBV), the other on avoiding negative affect (negative-based value or NBV). Indices of the two types were highly correlated with each other, but structural equations modeling also suggested different patterns of relationships for the two. NBV increased and PBV decreased when goals were perceived as necessary rather than freely chosen. Frequent prior attainment of a goal was associated with reduced PBV but had no clear relation to NBV. Results were qualified by interactions with motivational orientation of raters, but the NBV—PBV contrast may be functional and may overlap with other theoretical distinctions in the literature.     

Measuring Non-Economic Quality of Life on a Sub-National Level: A Case Study of New Zealand

Most research on non-economic quality of life has a national focus and/or uses subjective measures. This paper makes use of a multitude of demographic and geographic variables to construct objective indices of quality of life. This analysis is applied at the sub-national level for New Zealand for the purpose of rating regional areas on their quality of life over the period of 1986?C2006. This study also makes a contribution to the current quality of life literature by using a regression technique to remove the impact of income levels and therefore focus on the non-economic component of these quality of life indices. Our results show that Taranaki and Nelson are doing much better in terms of their quality of life, and Bay of Plenty and Waikato much worse than expected, given their levels of regional GDP per capita. These results have important policy implications at the regional council level.     

Semantic similarity, predictability, and models of sentence processing

The effects of word predictability and shared semantic similarity between a target word and other words that could have taken its place in a sentence on language comprehension are investigated using data from a reading time study, a sentence completion study, and linear mixed-effects regression modeling. We find that processing is facilitated if the different possible words that could occur in a given context are semantically similar to each other, meaning that processing is affected not only by the nature of the words that do occur, but also the relationships between the words that do occur and those that could have occurred. We discuss possible causes of the semantic similarity effect and point to possible limitations of using probability as a model of cognitive effort.     

A stress and coping model of medication adherence and viral load in HIV-positive men and women on highly active antiretroviral therapy (HAART).

The authors tested a structural model that incorporated age, time since diagnosis, social support, coping, and negative mood as predictors of medication adherence and HIV viral load on 188 men and 134 women on highly active antiretroviral therapy (HAART). The authors used psychosocial latent factors formed from baseline measures to predict latent factors of adherence, as assessed by electronic monitoring and self-report, and viral load defined by indicators assessed over a 15-month period. Results from the model indicate that greater negative mood and lower social support are related to greater use of avoidance-oriented coping strategies. Use of these coping strategies by patients on HAART is related to poorer medication adherence and, subsequently, higher viral load. This model advances researchers' understanding of the contribution of psychosocial variables in predicting treatment adherence and disease progression in HIV-positive men and women.     

Peer-Based Interventions on Academic Integrity: Assessing Immediate and Long Term Learning

The current study extends previous literature regarding the effectiveness of learning about academic integrity through peer instruction by assessing the impact of a peer instructional approach for actual and perceived learning gains over time. One trained residence don provided one interactive 30-min presentation covering four major aspects of academic integrity and misconduct (i.e., definition, detection, consequences, and importance of academic integrity) to groups of undergraduate students. In total, 192 participants attended the workshop and were surveyed for their knowledge of academic integrity immediately before the presentation, immediately after the presentation, and after a four week delay. Perceptions regarding the presentation also were assessed. Consistent with previous literature, results indicate perceived learning gains and preference for having an interactive presentation delivered by a residence don. In addition, actual gains in knowledge were found immediately after the presentation and gains remained evident over a four-week delay. Outcomes suggest that peer instruction is a viable and effective approach for educating students about academic integrity.