Mood effects on attitude judgements: the independent effects of mood before and after message elaboration

Die vorliegende Studie untersucht die voneinander unabhängigen Auswirkungen der erzeugten Stimmung auf die Aufnahme einer überzeugenden Mitteilung und auf das Treffen von Entscheidungen. Im ersten Experiment wurde eine positive bzw. negative Stimmung zum einen vor der Aufnahme einer anderen Meinung, zum anderen vor dem Treffen einer Entscheidung erzeugt. Wurde die Stimmung vor der Aufnahme der Mitteilung erzeugt, waren Personen in negativer Stimmung eher von starken Argumenten zu überzeugen. Personen in guter Stimmung ließen sich gleichermaßen von starken als auch von schwachen Argumenten überzeugen. Im zweiten Experiment wurde die Auswirkung der Stimmung nach der Aufnahme einer Mitteilung untersucht. Die Personen wurden mit einer gegensätzlichen Meinung konfrontiert und aufgefordert, entweder eine globale oder eine detaillierte Bewertung vorzunehmen. Anschließend wurde eine positive, negative oder neutrale Stimmung erzeugt. Personen mit guter Stimmung bevorzugten meist die globale Bewertung. (psz

Positive Mood and the Perception of Variability Within and Between Groups

Three experiments investigated the effects of positive mood on perceptions of variability within and between groups. Participants formed impressions of two different and highly variable groups under a neutral or positive mood. When participants expected to learn about both groups, positive mood increased perceived intergroup similarity but did not affect perceived intragroup variability. In contrast, when participants expected to learn about only one group, judgments of intergroup and intragroup similarity were both affected by mood. Mood and the intergroup context influenced the nature and degree of information processing and resultant judgments of variability in social groups

Positive Mood and the Perception of Variability Within and Between Groups

Three experiments investigated the effects of positive mood on perceptions of variability within and between groups. Participants formed impressions of two different and highly variable groups under a neutral or positive mood. When participants expected to learn about both groups, positive mood increased perceived intergroup similarity but did not affect perceived intragroup variability. In contrast, when participants expected to learn about only one group, judgments of intergroup and intragroup similarity were both affected by mood. Mood and the intergroup context influenced the nature and degree of information processing and resultant judgments of variability in social groups

Establishing populations of Megasphaera elsdenii YE 34 and Butyrivibrio fibrisolvens YE 44 in the rumen of cattle fed high grain diets

Aim: To determine whether Megasphaera elsdenii YE34 (lactic acid degrader) and Butyrivibrio fibrisolvens YE44 (alternative starch utilizer to Streptococcus bovis) establish viable populations in the rumen of beef cattle rapidly changed from a forage-based to a grain-based diet. Methods and Results: Five steers were inoculated with the two bacterial strains (YE34 and YE44) and five served as uninoculated controls. With the exception of one animal in the control group, which developed acidosis, all steers rapidly adapted to the grain-based diet without signs of acidosis (pH decline and accumulation of lactic acid). Bacterial populations of S. bovis, B. fibrisolvens and M. elsdenii were enumerated using real-time Taq nuclease assays. Populations of S. bovis remained constant (except in the acidotic animal) at ca 107 cell equivalents (CE) ml-1 throughout the study. Megasphaera elsdenii YE34, was not detectable in animals without grain in the diet, but immediately established in inoculated animals, at 106 CE ml-1, and increased 100-fold in the first 4 days following inoculation. Butyrivibrio fibrisolvens, initially present at 108 CE ml-1, declined rapidly with the introduction of grain into the diet and was not detectable 8 days after grain introduction. Conclusion: Megasphaera elsdenii rapidly establishes a lactic acid-utilizing bacterial population in the rumen of grain-fed cattle 7–10 days earlier than in uninoculated cattle. Significance and Impact of the Study: The study has demonstrated that rumen bacterial populations, and in particular the establishment of bacteria inoculated into the rumen for probiotic use, can be monitored by real-time PCR

Familiarity impacts person perception

We investigated the effects of familiarity on person perception. We predicted that familiarity would increase non-analytic processing, reducing attention to and the impact of individuating information, and increasing the impact of category labels on judgments about a target person. In two studies participants read either incriminating or exculpatory individuating information about a defendant in a criminal case and made judgments of guilt. In Study 1, participants were subliminally exposed to the defendant’s photo, another matched photo, or no photo before seeing the evidence. Participants familiar with the defendant’s photo both processed and used the individuating information less. In Study 2, participants were subtly made familiar or not with the incriminating and exculpatory information itself, and the defendant was described either as a priest or as a skinhead. Familiarity with the information reduced attention to its content and also tended to increase reliance on category information in guilt judgments

The feeling of familiarity as a regulator of persuasive processing

Two experiments demonstrated that a subjective feeling of familiarity determined whether participants processed persuasive information analytically (systematically) or non-analytically (heuristically). In the first experiment, individuals unfamiliar with message content showed differential attitude change when strong versus weak arguments were presented, whereas individuals made familiar with the message through unrelated repetition failed to do so. These results were confirmed in a second study that manipulated familiarity through subtle repetition and eliminated procedural priming explanations of the effect. Implications of these findings for familiarity as a regulator of persuasive processing are discussed

Emotions in Group Sports: A Narrative Review From a Social Identity Perspective

Recently, novel lines of research have developed to study the influence of identity processes in sport-related behaviors. Yet, whereas emotions in sport are the result of a complex psychosocial process, little attention has been paid to examining the mechanisms that underlie how group membership influences athletes’ emotional experiences. The present narrative review aims at complementing the comprehensive review produced by Rees et al. (2015) on social identity in sport by reporting specific work on identity-based emotions in sport. To that end, we firstly overview the different terminology currently used in the field of emotions in groups to clarify the distinct nature of emotions that result from an individual’s social identity. Secondly, we discuss key concepts of social identity to better understand the mechanisms underlying identity-based emotions. Thirdly, we address existing knowledge on identity-based emotions in sport. We close the present narrative review by suggesting future research perspectives based on existing meta-theories of social identity. Evidence from the social psychology literature is discussed alongside existing works from the sport literature to propose a crucial theoretical approach to better understand emotions in sport

Call for Papers for a Special Issue of Group Processes & Intergroup Relations in Intergroup Emotions

Copyright © 2005 SAGE Publications (London, Thousand Oaks, CA and New Delhi) 8:4; 470; DOI: 10.1177/1368430205060648 0 8 call for papers 30/9/05 1:53 pm Page 47

Prior source exposure and persuasion: Further evidence for misattributional processes

To assess the persuasive impact of prior source exposure, two studies paired persuasive messages with a source to whom participants had previously been exposed subliminally, explicitly, or not at all. In Experiment 2, participants’ attention also was drawn to information that potentially undermined the implications of any reaction to re-exposure. Compared to no exposure, prior subliminal exposure increased the source’s persuasiveness, an effect not mediated by source liking. Explicit exposure increased source persuasiveness to the extent that the source was liked more and only absent a recall cue. Results favored misattributional accounts of prior exposure effects