Signal detection theory,the exclusion failure paradigm and weak consciousness—Evidence for the access/phenomenal distinction?

Block [Block, N. (2005). Two neural correlates of consciousness. Trends in Cognitive Science, 9, 46–52] and Snodgrass (2006) claim that a signal detection theory (SDT) analysis of qualitative difference paradigms, in particular the exclusion failure paradigm, reveals cases of phenomenal consciousness without access consciousness. This claim is unwarranted on several grounds. First, partial cognitive access rather than a total lack of cognitive access can account for exclusion failure results. Second, Snodgrass’s Objective Threshold/Strategic (OT/S) model of perception relies on a problematic ‘enable’ approach to perception that denies the possibility of intentional control of unconscious perception and any effect of following different task instructions on the presence/absence of phenomenal consciousness. Many of Block’s purported examples of phenomenal consciousness without cognitive access also rely on this problematic approach. Third, qualitative difference paradigms may index only a subset of access consciousness. Thus, qualitative difference paradigms like exclusion failure cannot be used to isolate phenomenal consciousness, any attempt to do so still faces serious methodological problems.     

Sort out your neighbourhood

Axelrod (The evolution of cooperation, 1984) and others explain how cooperation can emerge in repeated 2-person prisoner’s dilemmas. But in public good games with anonymous contributions, we expect a breakdown of cooperation because direct reciprocity fails. However, if agents are situated in a social network determining which agents interact, and if they can influence the network, then cooperation can be a viable strategy. Social networks are modelled as graphs. Agents play public good games with their neighbours. After each game, they can terminate connections to others, and new connections are created. Cooperative agents do well because they manage to cluster with cooperators and avoid defectors. Computer simulations demonstrate that group formation and exclusion are powerful mechanisms to promote cooperation in dilemma situations. This explains why social dilemmas can often be solved if agents can choose with whom they interact.     

EEG decoding of semantic category reveals distributed representations for single concepts

Achieving a clearer picture of categorial distinctions in the brain is essential for our understanding of the conceptual lexicon, but much more fine-grained investigations are required in order for this evidence to contribute to lexical research. Here we present a collection of advanced data-mining techniques that allows the category of individual concepts to be decoded from single trials of EEG data. Neural activity was recorded while participants silently named images of mammals and tools, and category could be detected in single trials with an accuracy well above chance, both when considering data from single participants, and when group-training across participants. By aggregating across all trials, single concepts could be correctly assigned to their category with an accuracy of 98%. The pattern of classifications made by the algorithm confirmed that the neural patterns identified are due to conceptual category, and not any of a series of processing-related confounds. The time intervals, frequency bands and scalp locations that proved most informative for prediction permit physiological interpretation: the widespread activation shortly after appearance of the stimulus (from 100 ms) is consistent both with accounts of multi-pass processing, and distributed representations of categories. These methods provide an alternative to fMRI for fine-grained, large-scale investigations of the conceptual lexicon.     

Get angry, get out: The interpersonal effects of anger communication in multiparty negotiation

Research on multiparty negotiation has investigated how parties form coalitions to secure payoffs but has not addressed how emotions may affect such coalition decisions. Extending research on bilateral negotiations which has generally argued that it is beneficial to communicate anger, we argue that it constitutes a considerable risk when there are more than two people present at the negotiation table. Using a computer-mediated coalition game we show that communicating anger is a risky strategy in multiparty bargaining. The main findings of three studies were that participants: (1) form negative impressions of players who communicate anger and therefore (2) exclude such players from coalitions and from obtaining a payoff share, but (3) make considerable concessions on those rare occasions that they choose to form a coalition with an angry player, or (4) when they had to form a coalition with an angry player. We discuss the implications of these results for theorizing on emotions, negotiations, and coalition formation.     

Perceived justice of available opportunities and self-esteem,collective esteem and social exclusion: A study of three religious groups in India

Groups have their own social realities which determine their perceptions of justice having impact on their well- being and consequent integration with the mainstream society. The objective of the present study was to understand variations in perceived justice in terms of opportunities existing in five different domains, i.e. social prestige, economic, educational, employment and political by the Hindu Majority (N = 100) and Muslim (N = 100) and Christian (N = 76) minorities in India. In addition, the study also aimed to understand the relationship of perceived justice with self-esteem, collective esteem and social exclusion. Male and female participants (N = 276) of the study were either of high or low caste, and were of employed or unemployed status from a north Indian city. The results indicate that justice perception is determined by religion and caste not by gender and employment status. The majority Hindus perceived significantly higher perceptions of justice than Christians and Muslims minorities on all four domains except education. For education the minority Muslim group had lower justice perceptions than Hindus and Christians who did not differ significantly. The three groups differed significantly in their ratings of social exclusion with maximum exclusion perceived by Christians and minimum by Hindus. Results have implications for development initiatives.     

The research agenda: the vital need for empirical research in child psychotherapy

In this paper I shall describe how work discussion groups offered to staff on-site as part of a mental health in schools outreach project can have a significant impact on the thinking, attitudes and culture within a school. Through the use of some detailed examples of these work discussion groups in action, I hope to illustrate the way these groups can enable staff to enhance their observational skills, develop a deeper understanding of the factors that impact on learning, behaviour and teaching, and reduce staff stress. Finally, I hope to highlight the ways in which such groups not only extend staff skills in engaging with pupils at risk of emotional breakdown and school exclusion, but can also promote a learning environment for all, in which development and growth is promoted at a personal, professional and whole-school level.     

An old problem: how can we distinguish between conscious and unconscious knowledge acquired in an implicit learning task?

A long lasting debate in the field of implicit learning is whether participants can learn without acquiring conscious knowledge. One crucial problem is that no clear criterion exists allowing to identify participants who possess explicit knowledge. Here, we propose a method to diagnose during a serial reaction time task those participants who acquire conscious knowledge. We first validated this method by using Stroop-like material during training. Then we assessed participants’ knowledge with the Inclusion/Exclusion task (Experiment 1) and the wagering task (Experiment 2). Both experiments confirmed that for participants diagnosed as having acquired conscious knowledge about the underlying sequence the Stroop congruency effect disappeared, whereas for participants not diagnosed as possessing conscious knowledge it only slightly decreased. In addition, both experiments revealed that only participants diagnosed as conscious were able to strategically use their acquired knowledge. Thus, our method allows to reliably distinguish between participants with and without conscious knowledge.     

Investigating the emotional geographies of exclusion at a multicultural school

This article highlights the idea that educators need to look more carefully at how school practices and discourses are entangled with emotion in relation to perceptions of race and ethnicity. More specifically, the focus is on how emotional geographies are manifest in the formation and maintenance of particular racialisation and ethnicisation processes within a multicultural primary school in the Republic of Cyprus. The uniqueness of this school is that both Greek-Cypriot students and teachers (the majority) and Turkish-speaking students (the minority) are enrolled; this interaction takes place in the background of the long-standing political and ethnic conflict between Greek Cypriots and Turkish Cypriots. The central argument is that the emotional geographies of exclusion can be understood as manifestations of the racialisation and ethnicisation processes in schools—a finding that has important implications for how to understand the insidious power and tenacity in certain manifestations of these processes.