Contrast configuration influences grouping in apparent motion

We investigated whether the same principles that influence grouping in static displays also influence grouping in apparent motion. Using the Ternus display, we found that the proportion of group motion reports was influenced by changes in contrast configuration. Subjects made judgments of completion of these same configurations in a static display. Generally, contrast configurations that induced a high proportion of group motion responses were judged as more 'complete' in static displays. Using a stereo display, we then tested whether stereo information and T-junction information were critical for this increase in group motion. Perceived grouping was consistently higher for same contrast polarity configurations than for opposite contrast polarity configurations, regardless of the presence of stereo information or explicit T-junctions. Thus, while grouping in static and moving displays showed a similar dependence on contrast configuration, motion grouping showed little dependence on stereo or T-junction information.     

Marital research in the 20th century and a research agenda for the 21st century

In this article we review the advances made in the 20th century in studying marriages. Progress moved from a self-report, personality-based approach to the study of interaction in the 1950s, following the advent of general systems theory. This shift led, beginning in the 1970s, to the rapid development of marital research using a multimethod approach. The development of more sophisticated observational measures in the 1970s followed theorizing about family process that was begun in the decade of the 1950s. New techniques for observation, particularly the study of affect and the merging of synchronized data streams using observational and self-report perceptual data, and the use of sequential and time-series analyses produced new understandings of process and power. Research in the decades of the 1980s and 1990s witnessed the realization of many secular changes in the American family, including the changing role of women, social science's discovery of violence and incest in the family, the beginning of the study of cultural variation in marriages, the expansion of the measurement of marital outcomes to include longevity, health, and physiology (including the immune system), and the study of comorbidities that accompany marital distress. A research agenda for the 21st century is then described.     

Restaurant Tipping: Free‐Riding,Social Acceptance,and Gender Differences1

The practice of paying gratuities for services is a worldwide custom. Tipping is found only in some professions, which suggests that it serves to increase the efficiency of specific kinds of exchanges. The literature accepts the view that monitoring of employees by customers appears to be the logical rationale for the practice of tipping. This can be seen in that gratuities are paid at the discretion of consumers after they receive the services for which they are paying. However, it does not explain why, given the voluntary aspect of tipping, rational people would not free‐ride on the tipping of others. We found that both men and women free‐ride in their tipping behavior. Yet, we also found that men are more influenced by social acceptance or approval in their tipping behavior than are women.     

The importance of social structure and social interaction in stereotype consensus and content: is the whole greater than the sum of its parts?

This paper addresses the hypothesis derived from self‐categorization theory (SCT) that the relationship between groups and stereotyping will be affected by the social structural conditions within which group interaction occurs. A mixed design experiment (n=56) measured low‐status groups' stereotypes and preferences for conflict with a high‐status outgroup prior to and after within‐group discussion across varying social structural conditions. Over time, participants in [open] conditions consensualized around positive conceptions of the outgroup and endorsed acceptance of their own [low status] position. However, in [closed] conditions participants consensualized around positive conceptions of the ingroup, negative conceptions of the outgroup, and tended towards preferences for collective protest. It is argued that the data support S‐CT's contention that stereotyping and group processes are fundamentally interlinked and that neither can be properly understood in isolation from the dynamics of the surrounding intergroup context. Copyright © 2004 John Wiley & Sons, Ltd.     

How the “Northern Irish” National Identity Is Understood and Used by Young People and Politicians

The conventional understanding of the nation within social psychology is as a category of people or “imagined community.” However, work within the discursive tradition shows that citizens tend to discuss nationhood in a variety of modes, including the use of nonhuman categories such as references to the physical landscape of the country. This article aims to give a more comprehensive overview of how young people understand the Northern Irish identity, a new and potentially inclusive national category in a divided society, and how politicians articulate it in rhetoric. In Study 1, students (N = 286) discussed this identity in 44 peer‐led focus groups. Thematic analysis of their discussions shows four distinct ways in which it is constructed: as a distinctive people, as an identity claim, as a “hot” political project, and as a “cold” or banal indicator of place. In Study 2, Members of the Legislative Assembly at Stormont (N = 49) responded to open‐ended questions about the Northern Irish identity. Each of the parties used different conceptualizations for rhetorical effect. These results give a deeper understanding of the multifaceted nature of national identity and its ability to promote political agendas.     

The Role of Police Perceptions and Practices in the Development of “Public Disorder”1,2

Recent studies suggest that crowd conflict needs to be understood as an interaction between the crowd and out‐groups such as the police. This paper describes a questionnaire survey in which 80 police officers from 2 United Kingdom forces were asked about their perceptions of crowds, appropriate “public order” policing methods, and attributions of responsibility for crowd conflict. As predicted, police officers saw the composition of crowds as mixed; yet they also constructed a dichotomy between a powerful minority, capable of exerting influence in the service of disorder, and a majority, who are unable to resist this influence. Police officers did not clearly endorse the view that crowds pose a homogeneous threat. They recommended control and quick intervention to prevent the escalation of crowd violence but denied that such methods might themselves contribute to conflict. Path analysis provides suggestive evidence that these perceptions of the crowd are related as part of a coherent ideology. Overall, these results offer support for the elaborated social identity model of crowd behavior as a dynamic intergroup process.     

Criterion-referenced and norm-referenced assessment of minority group children

A variety of problems have been experienced with psychological assessment of minority children. Traditional norm-referenced measurement has repeatedly received criticism concerning cultural unfairness or bias. Responses to such accusations primarily have been in the form of new instrumentation aimed at attaining a culture fair assessment. Little response has been evident from a conceptual standpoint addressing the issues of purpose and use of test results Although many have turned to criterion-referenced measurement as an answer to the problems of norm-referenced evaluation, cultural bias is not necessarily avoided in this framework either. Issues of who determines criteria and what those criteria include must be addressed if criterion-referenced measurement is to meet adequately the challenge of multicultural evaluation.     

Managing to avert disaster: Explaining collective resilience at an outdoor music event

There is considerable evidence that psychological membership of crowds can protect people in dangerous events, although the underlying social–psychological processes have not been fully investigated. There is also evidence that those responsible for managing crowd safety view crowds as a source of psychological danger, views that may themselves impact upon crowd safety; yet, there has been little examination of how such ‘disaster myths’ operate in practice. In a study of an outdoor music event characterized as a near disaster, analysis of questionnaire survey data (N = 48) showed that social identification with the crowd predicted feeling safe directly as well as indirectly through expectations of help and trust in others in the crowd to deal with an emergency. In a second study of the same event, qualitative analysis of interviews (N = 20) and of contemporaneous archive materials showed that, in contrast to previous findings, crowd safety professionals' references to ‘mass panic’ were highly nuanced. Despite an emphasis by some safety professionals on crowd ‘disorder’, crowd participants and some of the professionals also claimed that self‐organization in the crowd prevented disaster.     

How Collective Participation Impacts Social Identity: A Longitudinal Study from India

A key issue for political psychology concerns the processes whereby people come to invest psychologically in socially and politically significant group identities. Since Durkheim, it has been assumed that participation in group‐relevant collective events increases one's investment in such group identities. However, little empirical research explicitly addresses this or the processes involved. We investigated these issues in a longitudinal questionnaire study conducted at one of the world's largest collective events—a month‐long Hindu festival in north India (the Magh Mela). Data gathered from pilgrims and comparable others who did not attend the event show that one month after the event, those who had participated (but not the controls) exhibited heightened social identification as a Hindu and increased frequency of prayer rituals. Data gathered from pilgrims during the festival predicted these outcomes. Specifically, perceptions of sharing a common identity with other pilgrims and of being able to enact one's social identity in this event helped predict changes in participants' identification and behavior. The wider significance of these data for political psychology is discussed.     

‘Something That Unites Us All’: Understandings of St. Patrick's Day Parades as Representing the Irish National Group

The present study investigates how attendees at national celebratory crowd events—specifically St. Patrick's Day parades—understand the role of such events in representing and uniting the national community. We conducted semi‐structured interviews with people who attended St. Patrick's Day parades in either Dublin or Belfast. In year 1, full‐length interviews were conducted before and after the events (N = 17), and in years 1 and 2, shorter interviews were conducted during the events (year 1 N = 170; year 2 N = 142). Interview data were analysed using thematic analysis, allowing the identification of three broad themes. Participants reported that (i) the events extend the boundary of the national group, using participation to define who counts as Irish; (ii) the events strategically represent the nature of the national group, maximising positive images and managing stereotypical representations; and (iii) symbolism serves to unify the group but can also disrupt already fragile unity and so must be managed. Overall, this points to a strategic identity dimension to these crowd events. We discuss the implications of these findings for future research in terms of the role of large‐scale celebratory events in the strategic representation of everyday social identities. © 2015 The Authors. Journal of Community & Applied Social Psychology published by John Wiley & Sons Ltd.