Nasty and Noble Notes: Interdependence Structures Drive Self-Serving Gossip.

Much information people receive about others reaches them via gossip. But is this gossip trustworthy? We examined this in a scenario study (Nsenders = 350, Nobservations = 700) and an interactive laboratory experiment (Nsenders = 126; Nobservations = 3024). In both studies, participants played a sequential prisoner's dilemma where a gossip sender observed a target's (first decider's) decision and could gossip about this to a receiver (second decider). We manipulated the interdependence structure such that gossipers' outcomes were equal to targets' outcomes, equal to receivers' outcomes, or independent. Compared to no interdependence, gossip was more often false when gossipers were interdependent with targets but not when interdependent with receivers. As such, false positive gossip (self-serving when interdependent with targets) increased but false negative gossip (self-serving when interdependent with receivers) did not. In conclusion, the interdependence structure affected gossip's trustworthiness: When gossipers' outcomes were interdependent with targets, gossip was less trustworthy.

Prosocial and punishment behaviors in everyday life.

Theory and experiments suggest people have different strategies (1) to condition their prosocial behavior in ways that maximize individual benefits and (2) to punish others who have exploited their own and others' prosocial behaviors. To date, most research testing existing theories has relied on experiments. However, documenting prosocial and punishment behaviors outside of the laboratory via experience sampling and diary methods can yield additional, rich insights. Recent work demonstrates these methods can describe social behaviors in daily life and be used to test theory about how behaviors change across situations and relationships. These methods have exposed discrepancies between what people experience in daily life and the problems researchers want to solve to understand the nature of human prosociality.

Honesty and dishonesty in gossip strategies: a fitness interdependence analysis.

Gossip, or sharing information about absent others, has been identified as an effective solution to free rider problems in situations with conflicting interests. Yet, the information transmitted via gossip can be biased, because gossipers may send dishonest information about others for personal gains. Such dishonest gossip makes reputation-based cooperation more difficult to evolve. But when are people likely to share honest or dishonest gossip? We build formal models to provide the theoretical foundation for individuals' gossip strategies, taking into account the gossiper's fitness interdependence with the receiver and the target. Our models across four different games suggest a very simple rule: when there is a perfect match (mismatch) between fitness interdependence and the effect of honest gossip, the gossiper should always be honest (dishonest); however, in the case of a partial match, the gossiper should make a choice based on their fitness interdependence with the receiver and the target and the marginal cost/benefit in terms of pay-off differences caused by possible choices of the receiver and the target in the game. Moreover, gossipers can use this simple rule to make optimal decisions even under noise. We discuss empirical examples that support the predictions of our model and potential extensions. This article is part of the theme issue 'The language of cooperation: reputation and honest signalling'.

Gossip and reputation in everyday life.

Gossip-a sender communicating to a receiver about an absent third party-is hypothesized to impact reputation formation, partner selection, and cooperation. Laboratory experiments have found that people gossip about others' cooperativeness and that they use gossip to condition their cooperation. Here, we move beyond the laboratory and test several predictions from theories of indirect reciprocity and reputation-based partner selection about the content of everyday gossip and how people use it to update the reputation of others in their social network. In a Dutch community sample (N = 309), we sampled daily events in which people either sent or received gossip about a target over 10 days (ngossip = 5284). Gossip senders frequently shared information about targets' cooperativeness and did so in ways that minimize potential retaliation from targets. Receivers overwhelmingly believed gossip to be true and updated their evaluation of targets based on gossip. In turn, a positive shift in the evaluation of a target was associated with higher intentions to help them in future interactions, and with lower intentions to avoid them in the future. Thus, gossip is used in daily life to impact and update reputations in a way that enables partner selection and indirect reciprocity. This article is part of the theme issue 'The language of cooperation: reputation and honest signalling'.

The Bright and Dark Side of Gossip for Cooperation in Groups.

Recent experimental studies seem to concur that gossip is good for groups by showing that gossip stems from prosocial motives to protect group members from non-cooperators. Thus, these studies emphasize the "bright" side of gossip. However, scattered studies point to detrimental outcomes of gossip for individuals and groups, arguing that a "dark" side of gossip exists. To understand the implications of gossip for cooperation in groups, both the dark and bright side of gossip must be illuminated. We investigated both sides of gossip in two scenario studies. In Study 1 (N = 108), we confronted participants with a free-rider in their group and manipulated whether the gossip recipient was the free-rider's potential victim or not. Participants showed a higher group protection motivation in response to gossip when imagining gossiping to a potential victim of a norm violator compared to a non-victim. They showed a higher emotion venting motivation when imagining gossiping to a non-victim compared to a potential victim. Both these gossip motives were related to an increased tendency to gossip. In Study 2 (N = 104), we manipulated whether participants were the targets or observers of gossip and whether the gossip was true or false. Results showed that targets of negative gossip intended to increase their work effort in the short run, but only when the gossip was true. Furthermore, gossip targets reported lower long-term cooperative intentions toward their workgroup regardless of gossip veracity. This paper demonstrates that gossip has both a "dark" and "bright" side and that situational factors and agent perspectives determine which side prevails.

Getting a Grip on the Grapevine: Extension and Factor Structure of the Motives to Gossip Questionnaire.

Gossip is condemned but also ubiquitous and thought to be essential for groups. This triggers the question of which motives explain gossip behavior. Hitherto, negative influence, social enjoyment, group protection, and information gathering and validation are established as motives to gossip. However, venting emotions-discussed as a potentially important motive-has been overlooked empirically. Furthermore, a lack of consensus about a definition of gossip may have affected previous conclusions about gossip motives. This study (N = 460) expands the Motives to Gossip Questionnaire (MGQ; Beersma and Van Kleef, 2012) by including a subscale measuring emotion venting, the desire to share emotionally evocative experiences. To validate the five motives to gossip across definitions, we asked participants to report the most recent gossip event they experienced, randomly assigning them to one of three instructions containing different gossip definitions commonly used in the literature: (1) broad instructions (sharing information about third parties who have no knowledge of the exchanged information), (2) narrower instructions (adding that the shared information must be evaluative), and (3) instructions using the word gossip. After participants recalled and described a gossip event, they completed the 25-item measure of five motives to gossip: social enjoyment, information gathering and validation, negative influence, group protection, and emotion venting. Confirmatory factor analysis confirmed the five-factor structure. Multi-group confirmatory factor analysis supported full invariance across the three definition conditions. This indicates the Motives to Gossip Questionnaire successfully measures the five dimensions argued to motivate gossip and can be applied in research conceptualizing gossip both narrowly and broadly.