Computationalism

What counts as a computation and how it relates to cognitive function are important questions for scientists interested in understanding how the mind thinks. This paper argues that pragmatic aspects of explanation ultimately determine how we answer those questions by examining what is needed to make rigorous the notion of computation used in the (cognitive) sciences. It (1) outlines the connection between the Church-Turing Thesis and computational theories of physical systems, (2) differentiates merely satisfying a computational function from true computation, and finally (3) relates how we determine a true computation to the functional methodology in cognitive science. All of the discussion will be directed toward showing that the only way to connect formal notions of computation to empirical theory will be in virtue of the pragmatic aspects of explanation.     

Jury selection in two countries: a psychological perspective

A comparative survey of jury selection practices in Britain and the United States indicates that the two countries differ along a number of dimensions, including the emphasis on the jury selection process in the trial, the amount and type of information available about prospective jurors, and the frequency with which trial lawyers alter the composition of the jury. The probable impact of these differences is analysed by considering the importance of jury composition in determining a jury’s verdict, the effectiveness of lawyers in exercising their challenges, and broader effects of jury selection procedures in the two countries.     

Fuzzy-trace theory and framing effects in choice: Gist extraction,truncation, and conversion

In the first section of this paper, we analyze classic framing effects according to principles of fuzzy-trace theory. The key principle of the theory is that reasoning prefers to operate on simple gist, as opposed to exact details. Then, we introduce new data in three experiments designed to test this fuzzy-processing assumption. In the first experiment, framing effects were conserved when numerical information was omitted from standard problems, arguing against a critical role for numerical processing. In the second experiment, evidence is presented that some subjects simplified framing problems by mentally truncating linguistically redundant complements in gambles. Experimentally deleting parts of gambles mimiced such effects, and choices varied depending on the information that remained explicit. In the third experiment, truncation effects were also demonstrated for mixed-frame problems, in which one option is positive and the other is negative. The data disconfirmed a ‘halo’ hypothesis that subjects merely selected the positive option over the negative one. Instead, choices were accounted for by conversion, that is, transforming problems into uniformly positive representations to avoid the complexity of negation. In all three experiments, choices could be explained as a consequence of radically simplifying decision information.     

Grandparents and Stepgrandparents: Challenges in Counseling the Extended-Blended Family

Remarriage of parents may bring new grandparents and stepgrandparents into the lives of children, creating new family structures and needs for adjustment. The extended-blended family may benefit from specific counseling interventions.     

Virtue and Practical Deliberation

The question of how to reason well is an important normative question,one which ultimately motivates some of our interest in the more abstracttopic of the principles of practical reason. It is this normative questionthat I propose to address by arguing that given the goal of an importantkind of deliberation, we will deliberate better if we develop certainvirtues. I give an account of the virtue of stability and I argue thatstability makes reasoners (of a certain sort) reason better. Further,I suggest at the end of the paper that an account of virtues thatconduce to good reasoning might go a long way toward answering someof the traditional questions about the principles ofpractical reason.     

Using Mnemonics to Increase Early Literacy Skills in Urban Kindergarten Students

The purpose of this study was to examine the effects of an integrated mnemonics strategy on consonant letter naming and consonant sound production on three kindergarten students at-risk for academic failure. Flashcards were developed where the target capital letter was enhanced and imbedded as part of the known picture (e.g., the letter D as the doorknob on a door, the letter F as the flag and flagpole). The mnemonic strategy was assessed using a multiple baseline across students design. Results showed that all three students increased in both the number of consonants named and the number of consonant sounds produced. In addition, all three students maintained performance at the 1 and 3 week followup. Also, based on a pre- and post-assessment, 2 students demonstrated generalization to the ability to name words beginning with consonants letter-sound learned.     

Domain specificity of spatial expertise: the case of video game players

Two experiments examined whether video game expertise transfers to performance on measures of spatial ability. In Experiment 1, skilled Tetris players outperformed non‐Tetris players on mental rotation of shapes that were either identical to or very similar to Tetris shapes, but not on other tests of spatial ability. The pattern of performance on those mental rotation tasks revealed that skilled Tetris Players used the same mental rotation procedures as non‐Tetris players, but when Tetris shapes were used, they executed them more quickly. In Experiment 2, non‐Tetris players who received 12 hours of Tetris‐playing experience did not differ from matched control students in pretest‐to‐posttest gains on tests of spatial ability. However, Tetris‐experienced participants were more likely to use an alternative type of mental rotation for Tetris shapes than were Tetris‐inexperienced participants. The results suggest that spatial expertise is highly domain‐specific and does not transfer broadly to other domains. Copyright © 2002 John Wiley & Sons, Ltd.     

The horizontal and vertical relations in upright faces are transmitted by different spatial frequency ranges

Faces convey distinct types of information: features and their spatial relations, which are differentially vulnerable to inversion. While inversion largely disrupts the processing of vertical spatial relations (e.g. eyes’ height), its effect is moderate for horizontal relations (e.g. interocular distance) and local feature properties. The SF ranges optimally transmitting horizontal and vertical face relations were here investigated to further address their functional role in face perception. Participants matched upright and inverted pairs of faces that differed at the level of local featural properties, horizontal relations in vertical relations. Irrespective of SF, the inversion effect was larger for vertical than horizontal and featural cues. Most interestingly, SF differentially influenced the processing of vertical, horizontal and featural cues in upright faces. Vertical relations were optimally processed in intermediate SF, which are known to carry useful information for face individuation. In contrast, horizontal relations were best conveyed by high SF, which are involved in the processing of local face properties. These findings not only confirm that horizontal and vertical relations play distinct functional roles in face perception, but they also further suggest a unique role of vertical relations in face individuation.