Contextual determinants of strategic choice: Some moderators of the availability bias

Three studies explored how the influence of the ‘availability heuristic’ on frequency judgement is mediated and moderated by the perceived meaning of the task, the perceived relevance of information for the task, and the salience of differential memorability of information. All studies adapted the ‘fumous names ’paradigm (Tversky and Kahneman, 1973) in which subjects are required to listen to a list of names of known personalities of both sexes and then judge the frequency of men and women. The availability heuristic (Tversky and Kahneman, 1973) posits that classes whose instances are easy to imagine or recall will be perceived as relatively frequent, so that when names of one sex are more famous and thus memorable this category will be rated as more numerous even when it occurs less frequently. Consistent with the notion that the use of availability is sensitive to task interpretation, we showed that the availability effect is eliminated over successive trials (Study 1) and moderated when task instructions render different categories salient (Study 2). In the third study it is shown that conditions which facilitate awareness of the biasing relationship between gender and fame (memorability), decrease the use of the availability heuristic by moderating frequency estimates of the more famous category. Results of these studies emphasize the context-bound and strategic aspects of judgement.     

Retracted:Staff,miter, book,share: how attributes of Saint Nicholas induce normative behavior

In three studies the hypothesis was tested that for young Dutch children, who associate Saint Nicholas with the norm to share one's wealth with others, attributes of Saint Nicholas (miter, book, and staff) would spontaneously activate the “sharing norm” and subsequent sharing behavior. The results confirmed our expectations. In two studies, young Dutch children share more candy with others after being primed with attributes of Saint Nicholas compared to being primed with a dwarf in the control condition. In a third study, children evaluate sharing more positively after being primed with attributes of Saint Nicholas, and more negatively after being primed with the Toys R Us logo, compared to being primed with a dwarf. This is the first empirical evidence that attributes of normative symbols can induce normative behavior and change norm judgments. Copyright © 2008 John Wiley & Sons, Ltd.     

The Credibility of Newspapers and Fear of Crime

It was hypothesized that the effect of a fear-arousing newspaper article about crime on fear of crime and concern about crime as a societal problem is dependent on source (newspaper) credibility. In an experimental study, participants were presented with an article on street robberies, ostensibly published in a more credible newspaper or in a less credible newspaper, whereas a control group did not read any article. As predicted, it was found that the article's effect on fear of robbery, fear of crime in general, and concern about robbery as a societal problem was fully dependent on source credibility. Further, women reported more fear of robbery and fear of crime in general than did men.     

Self-activation increases social comparison

In a series of studies it was demonstrated that activating the self is sufficient to increase social comparison tendencies. Treating the relevant constructs as individual differences that can be measured as well as contextual variables that can be manipulated, the authors show that individual differences in self-activation are correlated with interest in social comparison information and that manipulations of self-activation cause changes in interest in social comparison. Self-certainty often has been portrayed as the primary determinant of social comparison interest. The present results suggest that self-activation affects interest in social comparison even when self-certainty is controlled.     

Retracted: When nothing compares to me: how defensive motivations and similarity shape social comparison effects

While similarity typically breeds social comparison, all information gained from social comparisons is not equally influential. Three studies illustrate the situations in which individuals defensively interpret social comparison information such that they incorporate information that reflects positively on the self and disregard negative information. Study 1 extends previous research to show that self‐threat broadens the conditions under which defensive interpretations occur to include those in which similarity is ambiguous. Studies 2 and 3 demonstrate that defensive interpretations are less likely to occur when individuals are affirmed or when the comparison information is unimportant. These findings suggest that the impact of social comparisons on self‐views is determined by both similarity of comparison targets and the motives of the perceiver. Copyright © 2006 John Wiley & Sons, Ltd.     

Retracted:Making sense of war: using the interpretation comparison model to understand the Iraq conflict

The current research addressed the issue of how people use the past to compare and interpret the present. Using the logic of the Interpretation Comparison Model (ICM) we examined two factors (distinctness of past events and ambiguity of target event) that may influence how people make sense of a real world event (the Iraq War) within the context of past events (World War II and Vietnam). Extending earlier ICM studies, we used new manipulations and measures to examine the impact of these two factors. Results show that higher levels of (manipulated as well as measured) distinctness lead to contrastive evaluations about the Iraq War (and involved politicians) as a function of past wars. Lower levels of distinctness lead to assimilative evaluations, but only when the meaning of the target stimulus was somewhat ambiguous. Copyright © 2006 John Wiley & Sons, Ltd.     

The development of numerosity estimation: Evidence for a linear number representation early in life

Several studies investigating the development of approximate number representations used the number-to-position task and reported evidence for a shift from a logarithmic to a linear representation of numerical magnitude with increasing age. However, this interpretation as well as the number-to-position method itself has been questioned recently. The current study tested 5- and 8-year-old children on a newly established numerosity production task to examine developmental changes in number representations and to test the idea of a representational shift. Modelling of the children's numerical estimations revealed that responses of the 8-year-old children approximate a simple positive linear relation between estimated and actual numbers. Interestingly, however, the estimations of the 5-year-old children were best described by a bilinear model reflecting a relatively accurate linear representation of small numbers and no apparent magnitude knowledge for large numbers. Taken together, our findings provide no support for a shift of mental representations from a logarithmic to a linear metric but rather suggest that the range of number words which are appropriately conceptualised and represented by linear analogue magnitude codes expands during development.     

Retraction statement: Racist biases in legal decisions are reduced by a justice focus

The following article from European Journal of Social Psychology, “Racist biases in legal decisions are reduced by a justice focus” by Joris Lammers and Diederik A. Stapel published online on 1 December 2010 in Wiley Online Library ( wileyonlinelibrary.com ), has been retracted by agreement between the co‐author, the journal Editor in Chief, Tom Postmes, and John Wiley and Sons Ltd. The retraction has been agreed following the results of an investigation into the work of Diederik A. Stapel ( https://www.commissielevelt.nl/ ). The Levelt Committee has determined that this article contained data that was fabricated as supplied by Diederik A. Stapel. His co‐author was unaware of his actions, and not in any way involved. REFERENCE Lammers, J. & Stapel, D. A. (2011). Racist biases in legal decisions are reduced by a justice focus. European Journal of Social Psycholology, 41, 375–387. DOI: 10.1002/ejsp.783