Extended cognition and the priority of cognitive systems

This essay begins by addressing the role of the so-called Parity Principle in arguments for extended cognition. It is concluded that the Parity Principle does not, by itself, demarcate cognition and that another mark of the cognitive must be sought. The second section of the paper advances two arguments against the extended view of cognition, one of which – the conservatism-or-simplicity argument – appeals to principles of theory selection, and the other of which – the argument from demarcation – draws on a systems-based theory of cognition. The final section contests the claim, made by Andy Clark, that empirical work done by Wayne Gray and colleagues supports the extended view.     

General-Elimination Harmony and the Meaning of the Logical Constants

Inferentialism claims that expressions are meaningful by virtue of rules governing their use. In particular, logical expressions are autonomous if given meaning by their introduction-rules, rules specifying the grounds for assertion of propositions containing them. If the elimination-rules do no more, and no less, than is justified by the introduction-rules, the rules satisfy what Prawitz, following Lorenzen, called an inversion principle. This connection between rules leads to a general form of elimination-rule, and when the rules have this form, they may be said to exhibit “general-elimination” harmony. Ge-harmony ensures that the meaning of a logical expression is clearly visible in its I-rule, and that the I- and E-rules are coherent, in encapsulating the same meaning. However, it does not ensure that the resulting logical system is normalizable, nor that it satisfies the conservative extension property, nor that it is consistent. Thus harmony should not be identified with any of these notions.     

Against 'Time–Slices'

The concept of 'time–slice' turns out to be at best philosophically inconsequential, I argue. Influential philosophies of time as apparently diverse as those of Dummett, Lewis and Bergson, thus must come to grief. The very idea of 'time–slice' upon which they rest – the very idea of spatialising time, and of rendering the resulting 'slices' of potentially infinitely small measure – turns out on closer acquaintance not to amount to anything consequential that has yet been made sense of. Time is, rather, a ubiquitous lived 'tool' for the organisation and co–ordination of human activities, a tool so completely involved in those activities that Anti–Realism about it is as unstateable as Realism about it is unnecessary.     

The lure of choice

We report three studies demonstrating the ‘lure of choice’ people prefer options that allow them to take further choices over those that do not, even when the extra choices cannot improve the ultimate outcome. In Studies 1 and 2, participants chose between two options: one solitary item, and a pair of items between which they would then make a further choice. Consistent with the lure of choice, a given item was more likely to be the ultimate choice when it was initially part of a choice pair than when it was offered on its own. We also demonstrate the lure of choice in a four‐door version of the Monty Hall problem, in which participants could either stick with their original choice or switch to one of two unopened doors. Participants were more likely to switch if they could first ‘choose to choose’ between the two unopened doors (without immediately specifying which) than if they had to choose one door straightaway. We conclude by suggesting that the lure of choice is due to a choice heuristic that is very reliable in the natural world, but much less so in a world created by marketers. Copyright © 2003 John Wiley & Sons, Ltd.     

Trainee psychotherapy effectiveness at a psychodynamic training clinic: a practice-based study

The degree to which clinical experience is a significant factor in predicting positive psychotherapeutic outcomes is an open question. Empirical studies comparing experienced and beginning practitioners on differences in client outcomes have yielded mixed results. While multiple sources have indicated that trainees are generally effective therapists, few of these studies have examined the effectiveness of graduate-level therapists in a psychodynamic training program. In this study, conducted in the United States, we use a practice-based research approach to examine the outcomes of clients working with trainees at a community mental health clinic in the northeast United States. The theoretical orientation identified by the clinic and training program is psychodynamic with an interpersonal and/or relational emphasis. Results indicated that clients working with trainees at this clinic demonstrated improvement across several indicators of symptoms and psychosocial functioning over the time they received treatment. Implications for training and service reimbursement are discussed.     

A Quantitative Meta-analysis of Olfactory Dysfunction in Epilepsy

Neuropsychology Review - Olfactory dysfunction in epilepsy is well-documented in several olfactory domains. However, the clinical specificity of these deficits remains unknown. The aim of this...     

Testing for telepathy in connection with e-mails

This study investigated possible telepathic communication in connection with e-mails. On each trial, there were four potential e-mailers, one of whom was selected at random by the experimenter. One minute before a prearranged time at which the e-mail was to be sent, the participant guessed who would send it. 50 participants (29 women and 21 men) were recruited through an employment web site. Of 552 trials, 235 (43%) guesses were hits, significantly above the chance expectation of 25%. Further tests with 5 participants (4 women, 1 man, ages 16 to 29) were videotaped continuously. On the filmed trials, the 64 hits of 137 (47%) were significantly above chance.     

Adults' memories of childhood: affect, knowing, and remembering

Adult questionnaire respondents reported, for each of a number of events, if they had experienced that event during childhood and, if so, if they remembered the experience or merely knew it had happened. Respondents also rated the emotion of each event and judged whether they would remember more about each reportedly experienced event if they spent more time trying to do so. Study 1 respondents were 96 undergraduates, whereas Study 2 tested 93 community members ranging widely in age. Respondents often reported no recollections of reportedly experienced events. Reportedly experienced events rated as emotional were more often recollected than those rated as neutral, and those rated as positive were more often recollected than those rated as negative. Predicted ability to remember more was related to current memory. Claims of remembering reportedly experienced events increased with age, but predicted ability to remember more about them declined with age.