Excluded by Laughter: Laughing Until it Hurts Someone Else

Can laughter cause social pain? Given the host of ways exclusion is communicated, we examined if exclusive laughter could produce the aversive consequences accordant with social exclusion. Using a validated recall paradigm, participants recounted a time of exclusive or inclusive laughter or a typical Wednesday (control condition). Participants recalling exclusive laughter felt more ostracized, increased social pain, thwarted basic needs, worsened mood, reduced relational evaluation, and increased temptations to aggress compared to inclusive laughter or a typical Wednesday; there were generally no significant differences between the inclusive laughter and a typical Wednesday. Participants recalling exclusive laughter also felt more verbally and emotionally bullied, demonstrating empirically, for one of the first times, a link between social exclusion and bullying.     

The world in black and white: Ostracism enhances the categorical perception of social information

In two experiments, ostracized individuals showed more pronounced categorical perception of inclusion- and exclusion-related stimuli. Specifically, ostracism enhanced the ability to distinguish between-category differences (e.g., between happy and angry faces) relative to within-category differences (e.g., between two happy expressions). Participants were socially included or excluded via Cyberball (a virtual ball-tossing task). In Experiment 1, ostracized participants showed greater perceptual acuity in distinguishing between subtly happy and angry expressions combined with a reduced ability to discriminate expressions within each expression category. Experiment 2 found analogous categorical perception effects for targets varying on the dimension of race. Importantly, this effect was specific to social information; categorical perception of non-social objects was not qualified by social exclusion. These results suggest that ostracism exacerbates categorical perception, attuning perceivers to the differences between various inclusion- and exclusion-related categories relative to within category acuity, making the world appear more ‘black-and-white’ than it might otherwise.     

Using visual reinforcement to establish stimulus control of responding of Siamese fighting fish (Betta splendens)

Stimulus control of ring swimming was studied with male Siamese fighting fish (Betta splendens) using 2-component multiple schedules in which the components were correlated with the presence or absence of air bubbles in the water. In Experiment 1, either response-independent mirror presentations or extinction was juxtaposed with immediate response-dependent mirror presentations. Rates of ring swimming generally were higher with immediate reinforcement than with either response-independent mirror presentations or extinction. In Experiment 2, different durations of response-dependent mirror presentations were juxtaposed. Generally, higher rates of ring swimming occurred with 15-s than with 0-, 1-, or 3-s durations. Results demonstrate that stimulus control of responding can be established with these fish under several conditions of differential reinforcement.     

Responses to exclusion are moderated by its perceived fairness

Experimental exclusion manipulations may induce exclusion in a way that participants perceive as unfair. Groups often use exclusion punitively to correct inappropriate behavior, however, which may lead to perceptions that it is potentially justified or fair. The current studies examined if individuals' perceptions of fairness with respect to an exclusion experience moderated their reactions. Participants wrote about or imagined a time in which they were excluded after they did something wrong (fair exclusion) or excluded even though they did nothing wrong (unfair exclusion) or about a mundane experience unrelated to exclusion (control). Compared with fair exclusion, unfair exclusion resulted in significantly weaker efficacy needs satisfaction (Studies 1, 2, and 4), greater antisocial intent (Study 3), and greater sensitivity to signs of interpersonal acceptance and rejection in a visual search task (Study 4). These results suggest that it is important to consider the role of perceived fairness in shaping responses to exclusion.     

The Role of Gender in Mental-Illness Stigma: A National Experiment

ABSTRACT— The stigma of mental illness imposes substantial costs on both the individuals who experience mental illness and society at large. Understanding the psychological underpinnings of this stigma is therefore a matter of practical and theoretical significance. In a national, Web-based survey experiment, we investigated the role played by gender in moderating mental-illness stigma. Respondents read a case summary in which the gender of the person was orthogonally manipulated along with the type of disorder; the cases reflected either a male-typical disorder or a female-typical disorder. Results indicated that when cases were gender typical, respondents felt more negative affect, less sympathy, and less inclination to help, compared to when cases were gender atypical. This pattern can be explained by the fact that gender-typical cases were significantly less likely to be seen as genuine mental disturbances.     

A method for implantation of a chronically indwelling intravenous catheter in the pigeon

A procedure is described for infusing liquids directly into the bloodstream of freely moving unanesthetized pigeons. The system can be used for infusing drugs periodically or chronically for many months. Its potential for studying the stimulus properties of drugs, state dependent learning, drug self-administration, as well as the unconditioned responses to noncontingent intravenous drug administration in pigeons is discussed.