Implementation intentions as goal primes: Boosting self‐control in tempting environments

People often forget their long‐term strivings because their environment confronts them with attractive temptations. Previous research suggests that self‐control failures can be prevented by reminding people of their higher‐order goal. Therefore, we hypothesized that using implementation intentions as a tool to directly re‐activate people's higher‐order goal in tempting situations would effectively enhance self‐control. We tested this in the domain of dieting behavior. Results demonstrated that this specific planning strategy activated the dieting goal for unsuccessful dieters when exposed to tempting food cues (Study 1) and reduced their consumption of calorically dense food across 2 weeks (Study 2) compared to those in control conditions. This suggests that preparing people to think of their higher‐order goal when tempted can be used to protect ongoing goal striving. Appealing to higher‐order goals potentially makes implementation intentions flexible instruments of self‐regulation as this should trigger motivated behavior to reach goals and initiate various goal‐instrumental actions. Copyright © 2011 John Wiley & Sons, Ltd.     

Interactive affective sharing versus non‐interactive affective sharing in work groups: Comparative effects of group affect on work group performance and dynamics

This study explores whether the dynamic path to group affect, which is characterized by interactive affective sharing processes, yields different effects on task performance and group dynamics than the static path to group affect, which arises from non‐interactive affective sharing. The results of our experiment with 70 three‐person work groups show that groups performed better on creative tasks than on analytical tasks when they were in a positive mood, and better on analytical tasks than on creative tasks when in a negative mood, but only when affect was interactively shared. Moreover, analysis of videotaped group member interactions during task performance showed similar results for work group dynamics, such that group affect influenced belongingness and information sharing only when affect was interactively shared and not when affect was non‐interactively shared. Results support the idea that affective sharing processes are fundamental for understanding the effects of group affect on behavior. Copyright © 2010 John Wiley & Sons, Ltd.     

Be aware to care: Public self-awareness leads to a reversal of the bystander effect

The classic bystander effect stipulates that people help others more when they are alone than when other bystanders are present. We reason that, sometimes, the presence of bystanders can increase helping, notably in situations where public self-awareness is increased through the use of accountability cues (e.g., a camera). We conducted two experiments in which we tested this line of reasoning. In both experiments, participants read messages soliciting support in an online forum. We varied the number of people that were present in that forum to create a bystander and an alone condition. In Study 1, we introduced an accountability cue by making participants' screen-names more salient, and in Study 2, we used a webcam. Both studies indicate that, as expected, the bystander effect can be reversed by means of cues that raise public self-awareness in social settings.     

Wesley Salmon's Complementarity Thesis: Causalism and Unificationism Reconciled?

In his later years, Wesley Salmon believed that the two dominant models of scientific explanation (his own causal‐mechanical model and the unificationist model) were reconcilable. Salmon envisaged a ‘new consensus’ about explanation: he suggested that the two models represent two ‘complementary’ types of explanation, which may ‘peacefully coexist’ because they illuminate different aspects of scientific understanding. This paper traces the development of Salmon's ideas and presents a critical analysis of his complementarity thesis. Salmon's thesis is rejected on the basis of two objections, and an alternative view of the relation between different types of explanation is proposed.     

Ethnic and Gender Differences in Applicants' Decision‐Making Processes: An Application of the Theory of Reasoned Action

Although a growing proportion of the new entrants into the workforce consist of women and ethnic minorities, relatively little is known about the recruitment and job choice processes of these applicant groups. Therefore, this study investigated cultural and gender differences in job application decision processes among 191 job seekers looking for temporary employment. The theory of reasoned action (TRA) was found to be a valid framework to explain job application decisions, although gender differences existed in the strength of the relations. Job attractiveness and perceived person–organization fit added to the prediction of job application intention over and beyond the TRA variables.     

Predicting compulsive Internet use: it's all about sex!

The objective of this research was to assess the predictive power of various Internet applications on the development of compulsive Internet use (CIU). The study has a two-wave longitudinal design with an interval of 1 year. The first measurement contained 447 adult heavy Internet users who used the Internet at least 16 h per week and had Internet access at home for at least 1 year. For the second measurement, all participants were invited again, of whom 229 responded. By means of an online questionnaire, the respondents were asked about the time spent on various Internet applications and CIU. On a cross-sectional basis, gaming and erotica seem the most important Internet applications related to CIU. On a longitudinal basis, spending a lot of time on erotica predicted an increase in CIU 1 year later. The addictive potential of the different applications varies; erotica appears to have the highest potential.     

A method of weighing qualitative preference axioms

A method is developed for determining the absolute and relative strengths of qualitative preference axioms in normative Bayesian decision theory. These strengths are calculated for the three most common qualitative axioms; transitivity, the sure-thing principle, and dominance. The relative strength of the latter two axioms with respect to transitivity is calculated for special cases, and a bound is derived which is applicable to a larger class of decision problems. Possible implications of this theoretical work for decision heuristics are discussed.     

A monotonically convergent algorithm for orthogonal congruence rotation

Brokken has proposed a method for orthogonal rotation of one matrix such that its columns have a maximal sum of congruences with the columns of a target matrix. This method employs an algorithm for which convergence from every starting point is not guaranteed. In the present paper, an iterative majorization algorithm is proposed which is guaranteed to converge from every starting point. Specifically, it is proven that the function value converges monotonically, and that the difference between subsequent iterates converges to zero. In addition to the better convergence properties, another advantage of the present algorithm over Brokken's one is that it is easier to program. The algorithms are compared on 80 simulated data sets, and it turned out that the new algorithm performed well in all cases, whereas Brokken's algorithm failed in almost half the cases. The derivation of the algorithm is given in full detail because it involves a series of inequalities that can be of use to derive similar algorithms in different contexts.This research has been made possible by a fellowship from the Royal Netherlands Academy of Arts and Sciences to the first author. The authors are obliged to Willem J. Heiser and Jos M. F. ten Berge for useful comments on an earlier version of this paper.     

Loglinear multidimensional IRT models for polytomously scored items

A loglinear IRT model is proposed that relates polytomously scored item responses to a multidimensional latent space. The analyst may specify a response function for each response, indicating which latent abilities are necessary to arrive at that response. Each item may have a different number of response categories, so that free response items are more easily analyzed. Conditional maximum likelihood estimates are derived and the models may be tested generally or against alternative loglinear IRT models.Hank Kelderman is currently affiliated with Vrije Universiteit, Amsterdam.We thank Linda Vodegel-Matzen of the Division of Developmental Psychology of the University of Amsterdam for making available the data used in the example in this article.