Negative Existentials in Metaphysical Debate

There are statements of the form “There are no Fs” that we would like to count as true, yet it is hard to see how they could be true (at least, operating within the semantic framework of structured propositions). The relevant Fs are general terms that we take to be semantically fundamental or primitive, especially those native to metaphysical discourse. A case can be made the problem is no less difficult than the corresponding problem for singular terms.     

Sex moderates associations between prenatal glucocorticoid exposure and human fetal neurological development

Maternal cortisol levels (at 15, 19, 25, 31 and 37 weeks’ gestation) and fetal movement response to vibroacoustic stimulation (VAS; at 25, 31 and 37 weeks) were assessed in 190 mother‐fetus pairs. Fetuses showed a response to the VAS at 25 weeks and there was evidence of increasing maturation in the response at 31 and 37 weeks. Early elevations in cortisol predicted a failure to respond to the VAS at 25 weeks and later elevations in cortisol were associated with a larger response among fetuses when assessed near term. The associations between cortisol and VAS emerged earlier and were more apparent among female fetuses than among the males. The findings provide support for the role of prenatal glucocorticoids in shaping human fetal CNS development.     

Processing Differences between Feature‐Based Facial Composites and Photos of Real Faces

Computer‐generated faces (composites) constructed by select2ing individual facial features (e.g. eyes, nose, mouth) are poorly recognized because this process contrasts with the natural holistic processing of real faces. This result suggests that there should be differences in the cognitive processing of these composites compared with photos of real faces, which would make these stimuli problematic for theories seeking to explain real face processing. We conducted five experiments to test potential conditions for moving composite processing closer to how real face photos are processed, first taking the perspective of researchers who construct composites with a random selection of available features and then taking a perspective closer to police by creating each composite to match a real face photo. Composites with randomly selected features (but configured like real faces) showed no face inversion effect and recognition memory for these composites benefited from increased encoding time, unlike real face photos. Although composites constructed to match real face photos yielded an inversion effect, they still were remembered differently than the photos. Researchers should not use feature‐based composites as proxies for real face photos. We conclude with a discussion of alternative methods of constructing composites. Copyright © 2012 John Wiley & Sons, Ltd.     

On a derivation of the necessity of identity

The source, status, and significance of the derivation of the necessity of identity at the beginning of Kripke’s lecture “Identity and Necessity” is discussed from a logical, philosophical, and historical point of view.     

Examining attentional biases underlying trait anxiety in younger and older adults

Previous research has not adequately assessed the independent contributions of component attentional processes to anxiety-linked biases. MacLeod and Sadler developed a novel, lexical decision task using negative and neutral word stimuli, to enable the independent measurement of attentional engagement and disengagement. Their results suggest that anxiety-linked attentional biases are associated with facilitated attentional engagement with negative information. The present study aimed to determine the replicability of these findings, with two important extensions. First, this study included positive word stimuli in the lexical decision task, to determine whether anxiety-linked attentional biases exist only towards negative information, or toward emotionally arousing information in general. Second, this study explored age-related differences in anxiety-linked attentional biases. Younger (N=32) and older adults (N=32) with both high and low trait anxiety completed the lexical decision task. The results suggest that heightened anxiety may be associated with a deficit in engaging with positive words. No age-related differences in anxiety-linked attentional biases were apparent.     

Philosophy of Mathematics in the Twentieth Century: Selected Essays

S. SHAPIRO (ed.), Intensional Mathematics (Studies in Logic and the Foundations of Mathematics, vol. 11 3). Amsterdam: North-Holland, 1985. v + 230 pp. $38.50/100Df.     

Do the “Savage Origins” of Tattoos Cast a Prejudicial Shadow on Contemporary Tattooed Individuals?

We investigated whether increases in tattooing rates and designs have eradicated or altered traditional delinquent tattooing stereotypes. We tested the perceived suitability of tattooed and non‐tattooed individuals for 2 different jobs. Affective evaluations mediated judgments of job suitability, with those displaying traditional tattoos being rated as less suitable for employment than those who were not tattooed and those displaying contemporary tattoos. Those with a contemporary tattoo were judged in the same manner as those who were not tattooed (even by observers who neither had a tattoo nor were considering getting one). These results suggest that the savage associations of tattooing continue for some, but suggest that for other tattoo enthusiasts, a new stereotype has emerged reflecting a shift toward respectability.     

The reliability of three visual perception tests used to assess adults

Summary.-The reliability of three adult visual perceptual tests was investigated. Participants aged 20 years and older (N = 221; 49 adults with neurological impairment, 172 adults without) completed the Developmental Test of Visual Perception-Adolescent and Adult (DTVP-A), the Motor-Free Visual Perception Test-3 (MVPT-3), and the Test of Visual Perceptual Skills (non-motor) Third Edition (TVPS-3). Participants (n = 46) without neurological impairment completed these tests twice. Cronbach's alpha for the DTVP-A, MVPT-3, and TVPS-3 total scales were .86, .74, and .80 and test-retest correlations .51, .71, and .72, respectively.     

The effect of viewing distance on empirical discriminability and the confidence–accuracy relationship for eyewitness identification

The distance from which an eyewitness views a perpetrator is a critical factor for eyewitness identification, but has received little research attention. We presented three mock-crime videos to participants, varying distance to three perpetrators (3, 10, or 20 m). Across two experiments, increased distance reduced empirical discriminability in the form of a mirror effect, such that correct identifications decreased while false identifications increased. Moreover, high confidence identifications were associated with high accuracy at 3 m (Experiment 1 and 2) and 10 m (Experiment 2), but not at 20 m. We conclude that eyewitnesses may be less likely to identify a perpetrator viewed at a distance, and also more likely to falsely identify an innocent suspect. Furthermore, there may be certain boundary conditions associated with distance and the impact it has on the confidence–accuracy relationship. More research is needed to elucidate the effect of estimator variable manipulations on the confidence–accuracy relationship.