Information Flow and Influence during Collective Search, Discussion, and Choice

If decision-relevant information is distributed among team members, the group is inclined to focus on shared information and to neglect unshared information, resulting often in suboptimal decisions. This classical finding is robust in experimental settings, in which the distribution of information is created artificially by an experimenter. The current paper looks at information sharing effects when access to information is not restricted, and decision makers are very familiar with the decision task. We analyzed archival search and discussion data obtained from business executives completing a personnel selection exercise. Information popularity in the population from which groups were composed predicted number of group members accessing items during information searches and whether the group discussed the items. The number of group members who accessed an item predicted whether information was repeated during discussion, and repetition predicted which items were included on an executive summary. Moreover, cognitively central group members were more influential than cognitively peripheral members. One implication is that collective decision making amplifies what is commonly known at the expense of disseminating what is not.Information Sharing, Cognitive Centrality, Group Decision Making, Collective Choice, Archival Data

Competing or aiming to be average?: Normification as a means of engaging digital volunteers

Engagement, motivation and active contribution by digital volunteers are key requirements for crowdsourcing and citizen science projects. Many systems use competitive elements, for example point scoring and leaderboards, to achieve these ends. However, while competition may motivate some people, it can have a neutral or demotivating effect on others. In this paper we explore theories of personal and social norms and investigate normification as an alternative approach to engagement, to be used alongside or instead of competitive strategies. We provide a systematic review of existing crowdsourcing and citizen science literature and categorise the ways that theories of norms have been incorporated to date. We then present qualitative interview data from a pro-environmental crowdsourcing study, Close the Door, which reveals normalising attitudes in certain participants. We assess how this links with competitive behaviour and participant performance. Based on our findings and analysis of norm theories, we consider the implications for designers wishing to use normification as an engagement strategy in crowdsourcing and citizen science systems

Bias in judgement: Comparing individuals and groups

The relative susceptibility of individuals and groups to systematic judgmental biases is considered. An overview of the relevant empirical literature reveals no clear or general pattern. However, a theoretical analysis employing J. H. Davis's (1973) social decision scheme (SDS) model reveals that the relative magnitude of individual and group bias depends upon several factors, including group size, initial individual judgment, the magnitude of bias among individuals, the type of bias, and most of all, the group-judgment process. It is concluded that there can be no simple answer to the question, "Which are more biased, individuals or groups?," but the SDS model offers a framework for specifying some of the conditions under which individuals are both more and less biased than groups

Representation Effects and Loss Aversion in Analytical Behaviour: An Experimental Study into Decision Making Facilitated by Visual Analytics

This paper presents the results of an experiment into the relationship between the representation of data and decision-making. Three hundred participants online, were asked to choose between a series of financial investment opportunities using data presented in line charts. A single dependent variable of investment choice was examined over four levels of varying display conditions and randomised data. Three variations to line chart visualisations provided a controlled factor between subjects divided into three groups; -˜standard’ line charts, -˜tall’ line charts, and one dual-series line chart. The final results revealed a consistent main effect and two other interactions between certain display conditions and decision-making. The findings of this paper are significant to the study visualisation and to the field of visual analytics. This experiment was devised as part of a study into Analytical Behaviour, defined as decision-making facilitated by visual analytics - a new topic that encompasses existing research and real-world applications

Social influence effects on remote group interactions

This paper discusses the results of an experiment exploring the effects of information technology intervention on decision making groups. Specifically, the study examines the effects communication modality {remote vs. face-to-face) and information load on the types of social influence used by group members and the amount of group polarization or choice shift exhibited by group members. The findings suggest that face-to-face groups use more informational influence than remote groups and that this difference increases as information load increases. Also, face-to-face groups experienced greater choice shift than remote groups at high information loads

The Innocence Effect

Nearly all felony convictions—about 95 percent—follow guilty pleas, suggesting that plea offers are very attractive to defendants compared to trials. Some scholars argue that plea bargains are too attractive and should be curtailed because they facilitate the wrongful conviction of innocents. Others contend that plea bargains only benefit innocent defendants, providing an alternative to the risk of a harsher sentence at trial. Hence, even while heatedly disputing their desirability, both camps in the debate believe that plea bargains commonly lead innocents to plead guilty. This Article shows, however, that the belief that innocents routinely plead guilty is overstated. We provide varied empirical evidence for the hitherto neglected innocence effect, revealing that innocents are significantly less likely to accept plea offers that appear attractive to similarly situated guilty defendants. The Article further explores the psychological causes of the innocence effect and examines its implications for plea bargaining. Positively, we identify the striking cost of innocence, wherein innocents suffer harsher average sanctions than similarly situated guilty defendants. Yet our findings also show that the innocence effect directly causes an overrepresentation of the guilty among plea bargainers and an overrepresentation of the innocent among those who choose trial. In this way, the innocence effect beneficially reduces the rate of wrongful convictions—including accepted plea bargains—even when compared to a system that does not allow plea bargaining. Normatively, our analysis finds that both detractors and supporters of plea bargaining should reevaluate, if not completely reverse, their long-held positions to account for the causes and consequences of the innocence effect. The Article concludes by outlining two proposals for minimizing false convictions, better protecting the innocent, and improving the plea bargaining process altogether by accounting for the innocence effect

The social life of the novel idea: What did social psychologists ever do for us?

Purpose - The paper presents the extant literature relating to the social processes of innovation in built environment design teams. The paper connects the relevant and significant work in the field of Social Psychology and Architecture, Engineering and Construction (AEC) to derive a theoretical framework which can be used to direct further research, towards development of the behavioural facet of design management. Design/methodology/approach - First, we establish which aspects of social processes of innovation are already present within the AEC field and examine concepts/ideas in Social Psychology that are likely to be important in understanding group processes within AEC, applying three emergent themes of 1) social climate; 2) risk attitudes and 3) motivation and reward. Second, we identify which elements of Social Psychology may be used to expand, consolidate and develop our understanding and identify gaps in AEC specific knowledge. Findings - The paper suggests that whilst the AEC literature has supplanted some key elements of Social Psychology, this discipline offers a further and significant theoretical resource. However, whilst some aspects of social climate and motivation/reward are well-represented in the AEC field, these have not yet been fully explored. Furthermore, how collective attitudes to risk can influence design decision-making is identified as having a limited presence. Originality/value - This paper is the first to bring together the two disciplines of AEC and Social Psychology to examine the social aspects of innovative design performance in built environment teams. The paper fulfils an identified need to examine the social processes that influence innovative design performance in constructio