An examination of the cognitive processes involved in childhood obsessive-compulsive disorder

The cognitive theory of obsessive-compulsive disorder (OCD) is the most widely accepted account of the aetiology and maintenance of this disorder in adults. This paper investigated whether cognitive processes were evident in a sample of children with a primary diagnosis of OCD. Using an idiographic approach, as proposed by the Obsessive-Compulsive Cognitions Working Group, this paper assessed cognitive appraisals of responsibility, probability, severity, thought-action fusion, self-doubt and cognitive control. Ratings of these cognitive appraisals were obtained across a sample of children with OCD, and were compared with ratings from a clinical control group of anxious children and a non-clinic control group. It was hypothesised that consistent with the cognitive theory of OCD, children in the OCD group would display higher estimations of these cognitive processes in comparison to anxious and non-clinic children. Results of this investigation provide preliminary support for a cognitive conceptualisation of OCD during childhood. OCD children reported significantly higher ratings of responsibility, severity, thought action fusion and less cognitive control in comparison to non-clinic children. OCD children could also be clearly differentiated from anxious children on ratings of cognitive control. Implications of this investigation are discussed and directions for future research are highlighted.     

Thought control strategies in obsessive-compulsive disorder: a replication and extension

Previous research suggests that individuals with OCD use maladaptive strategies to control their unpleasant thoughts (Behav Res Ther (1977) 35, 775). These include worry and self-punishment strategies. In the present study we replicated and extended the previous findings by comparing thought control strategies used by patients with OCD to strategies used by anxious and non-anxious control participants. We also examined changes in thought control strategies for OCD patients who underwent cognitive-behavioral therapy. Compared to controls, OCD patients reported more frequent use of worry and punishment strategies, and less frequent use of distraction. Following successful treatment, OCD patients evidenced increased use of distraction and decreased use of punishment. Findings are discussed in terms of the cognitive model of OCD.     

Better control with less effort: The advantage of using focused-breathing strategy over focused-distraction strategy on thought suppression

It has been suggested that unwanted thoughts usually intrude during mind wandering due to a shortage of mental resources. However, strategies for suppressing such thoughts have never been examined from a mind wandering perspective. Here, we compare the effectiveness of two types of attention distraction strategies that either redirect users’ attention to their own breathing (focused-breathing strategy, FBS) or to a mental image (focused-distraction strategy, FDS) as related to working memory capacities. Eighty-two undergraduates were randomly assigned into a FBS or FDS group. They completed a concentration task and a thought suppression task, in which mind wandering and thought intrusions were each measured. Our results support the hypothesis that mind wandering is positively correlated to thought intrusions and shows that FBS is more effective than FDS in reducing mind wandering and thought intrusions. Moreover, in contrast to FDS, the effect of FBS is independent of users’ mental resources.     

Book Reviews

Scruton, Roger Modern Philosophy: An Introduction and Survey
Fraser, Nancy and Bartky, Sandra Lee (eds) Revaluing French Feminisms: Critical Essays on Difference, Agency and Culture
Friedman, Marilyn What are Friends For? Feminist Perspectives on Personal Relationships and Moral Theory     

Directions in Connectionist Research: Tractable Computations Without Syntactically Structured Representations

Should connectionists abandon the quest for tractably computable cognitive transition functions while retaining syntactically structured mental representations? We argue, in opposition to Horgan, that it should not. We argue that the case against tractably computable functions, based upon the claimed isotropic and Quinean character of cognition, fails since cognition is not as isotropic and Quinean as Fodor and Horgan contend. Moreover, we illustrate how current research in both connectionism and cognitive neuroscience suggests that tractability can be preserved through division of overall computations into modular sub-processes, each of which is tractable. As to syntactically structured representations, we argue that they are unneeded for most cognitive tasks organisms confront, and that when they are needed, they may be provided by external representational media such as natural language. Moreover, we note that increasingly cognitive linguistics has become the ally of connectionism and that the research program of cognitive linguistics suggests that abilities to use natural languages may be developed without requiring syntactically structured mental representations to exist prior to natural language.     

Ethical aspects of the safety of medicines and other social chemicals

The historical background of the discovery of adverse health effects of medicines, food additives, pesticides, and other chemicals is reviewed, and the development of national and international regulations and testing procedures to protect the public against the toxic effects of these drugs and chemicals is outlined. Ethical considerations of the safety evaluation of drugs and chemicals by human experimentation and animal toxicity studies, ethical problems associated with clinical trials, with the falsification of clinical and toxicological data, and with inadequate experimental methodology, are reviewed, and the ethics of the marketing of drugs and their post-marketing surveillance, are similarly considered. These ethical problems are illustrated with many specific examples, including the drugs neoarsphenamine, chloramphenicol, thalidomide, diethyl stilboestrol and benoxaprofen.     

Habermas in the Lab: A Study of Deliberation in an Experimental Setting

This study outlines a new paradigm for the investigation of the effects of deliberation on political decisions. Specifically, it uses the ultimatum game as a situation in which the opportunity to deliberate and the placement of this opportunity are experimentally manipulated. Structural factors, such as the players' roles and their ability to vote on the proposal being offered, are also manipulated as a basis for comparison. Two outcomes are examined: the games' allocations, and players' perceptions of fairness. After controlling for structural factors, deliberative opportunity creates a more equitable distribution of money and enhances fairness perceptions. However, these results hold only when such an opportunity occurs before the proposal stage. Deliberative opportunity after the proposal stage has no discernible impact. A survey of participants found that their personal characteristics and political predispositions influence perceptions of fairness for proposers, but not for acceptors. These findings demonstrate the potential benefits of deliberation while highlighting the importance of the nature of its implementation in determining its level of success.     

Is there something quantum-like about the human mental lexicon?

Following an early claim by Nelson and McEvoy suggesting that word associations can display ‘spooky action at a distance behaviour’, a serious investigation of the potentially quantum nature of such associations is currently underway. In this paper quantum theory is proposed as a framework suitable for modelling the human mental lexicon, specifically the results obtained from both intralist and extralist word association experiments. Some initial models exploring this hypothesis are discussed, and experiments capable of testing these models proposed.     

Human Rights and Pluralism in CatholicSocial Thought

The essay argues that a Catholic tradition of natural law and its conception of human rights depend on the continuing life of institutions that stand apart from and sustain standards of justice independent from the modern state and its corresponding economy. Christians contribute to a defense of human rights precisely as members of their Churches, through their social and institutional presence across the globe. Catholic social thought deals with matters of human rights from within a tradition of natural law that assumes a common human end, a common good. This ecclesiological tradition of the human good is precisely what Catholics have to offer in a context of pluralism. The Church has a task of sustaining institutions where its practical rationality about human goods offers a practical alternative in a world where the self-interest of states and purely economic interests win the day.     

Systematicity redux

One of the main challenges that Jerry Fodor and Zenon Pylyshyn (Cognition 28:3–71, 1988) posed for any connectionist theory of cognitive architecture is to explain the systematicity of thought without implementing a Language of Thought (LOT) architecture. The systematicity challenge presents a dilemma: if connectionism cannot explain the systematicity of thought, then it fails to offer an adequate theory of cognitive architecture; and if it explains the systematicity of thought by implementing a LOT architecture, then it fails to offer an alternative to the LOT hypothesis. Given that thought is systematic, connectionism can offer an adequate alternative to the LOT hypothesis only if it can meet the challenge. Although some critics tried to meet the challenge, others argued that it need not be met since thought is not in fact systematic; and some claimed not to even understand the claim that thought is systematic. I do not here examine attempts to answer the challenge. Instead, I defend the challenge itself by explicating the notion of systematicity in a way that I hope makes clear that thought is indeed systematic, and so that to offer an adequate alternative to the LOT hypothesis, connectionism must meet the challenge.