Development and Validation of the Screen for Adolescent Violence Exposure (SAVE)

Empirical evidence was provided on the utility of the Screen for Adolescent Violence Exposure (SAVE) in assessing adolescent exposure to school, home, and community violence. The SAVE was empirically developed on 1,250 inner-city adolescents, and obtained excellent reliability and validity. Both exploratory and confirmatory factor analyses identified three factors: Traumatic Violence, Indirect Violence, and Physical/Verbal Abuse. The SAVE demonstrated utility in classifying high- and low-violence participants, and correlated significantly with both objective crime data and theoretically relevant constructs (anger, posttraumatic stress symptoms, and internalizing/externalizing problems). Thus, the SAVE provides measurement of the stressor criterion associated with posttraumatic stress disorder, and allows quantification of severity of violence exposure by setting.     

Perceptual learning in pigeons: Decreased ability to Discriminate samples mapped onto the same comparison in many-to-one matching

Humans often treat two stimuli that are associated with a common response as similar in other contexts. They do so presumably because those stimuli become conceptually or perceptually more similar to each other (perceptual learning). An analogous phenomenon may occur in pigeons when they are trained with a matching-to-sample procedure in which more than one sample is mapped onto the same comparison. In the present research, pigeons were trained to select one comparison following either of two samples (S₁ or S₂) and to select the other comparison following either of two different samples (S₃ or S₄). When the samples were then presented as positive and negative stimuli in a simple successive discrimination, samples that had been associated with the same comparison during original training (e.g., S₁ vs. S₂) were more difficult to discriminate than were samples that had been associated with different comparisons (e.g., S₁ vs. S₃). Thus, it appears that perceptual learning occurs in pigeons as well.     

Stimulus similarity and order as factors in visual short-term memory in nonhuman primates.

The short-term retention of nonhuman primates for a single sample or for two successively presented samples was assessed in four delayed matching-to-sample experiments with delays of .03, 4, 8, 16, and 32 sec. The single sample tasks included one (Experiment 1) or two (Experiment 4) distractor stimuli in the choice set (matching test). In the two successive samples tasks, the animals matched (reconstructed) the order of presentation of two samples with (Experiment 3) and without (Experiment 2) a distractor stimulus. Also, the possible combinations of eight stimuli (four colors and four shapes) were arranged to test the effects of sample set and choice set similarity. Taken together, analyses of the errors indicated that both sample and choice set similarity were significant sources of confusions in delayed matching. Order errors occurred independently of similarity but were a source of forgetting primarily at the longest delays (16 and 32 sec). Two exceptions to the similarity effect (second response errors in Experiment 3 and errors of an inexperienced group in Experiment 4) were observed. Possible reasons for the exceptions and several implications of these findings for theories of short-term memory are discussed.     

A component model for stimulus variables in discrimination learning

A general function is derived describing the conditioning of a single stimulus component in a discriminative situation. This function, together with the combinatorial rules of statistical learning theory [5, 12], generates empirically testable formulas for learning of classical two-alternative discriminations, probabilistic discriminations, and discriminations based on the outcomes of preceding trials in partial reinforcement experiments.The researches on which this paper is based were facilitated by a grant from the National Science Foundation.     

Normative Conflicts and The Logic of 'Ought'

On the face of it, normative conflicts are commonplace. Yet standard deontic logic declares them to be logically impossible. That prompts the question, What are the proper principles of normative reasoning if such conflicts are possible? This paper examines several alternatives that have been proposed for a logic of ‘ought’ that can accommodate normative conflicts, and finds all of them unsatisfactory as measured against three criteria of adequacy. It then introduces a new logic that does meet all three criteria, and so allows for the possibility of genuine normative conflicts.     

The Role of Omission Neglect in Response to Non-Gains and Non-Losses in Gasoline Price Fluctuations

Research on omission neglect has shown that people are insensitive to many different types of missing, unmentioned, or unknown information. However, prior research has not examined the role of omission neglect in non-gain and non-loss framing. The present research shows that gain/loss framing effects are greater than non-gain/non-loss framing effects on judgments of the ease with which various scenarios can be imagined, judgments of believability, attributions to price gouging, and attributions to inflation. The results also show that negative outcomes are more influential than are positive outcomes in judgments of imaginability, believability, and fairness, and in attribution judgments. Considered together, the results suggest that omission neglect plays an important role in insensitivity to non-gains and non-losses.     

The role of prior experience in language acquisition

Learners exposed to an artificial language recognize its abstract structural regularities when instantiated in a novel vocabulary (e.g., Gómez, Gerken, & Schvaneveldt, 2000; Tunney & Altmann, 2001). We asked whether such sensitivity accelerates subsequent learning, and enables acquisition of more complex structure. In Experiment 1, pre-exposure to a category-induction language of the form aX bY sped subsequent learning when the language is instantiated in a different vocabulary. In Experiment 2, while naíve learners did not acquire an acX bcY language, in which aX and bY co-occurrence regularities were separated by a c-element, prior experience with an aX bY language provided some benefit. In Experiment 3 we replicated this finding with a 24-hour delay between learning phases, and controlled for prior experience with the aX bY language's prosodic and phonological characteristics. These findings suggest that learners, and the structure they can acquire, change as a function of experience.     

Oppression and empowerment: perceptions of violence among urban youth

Youth violence in the United States has emerged as a major concern for communities, policymakers and community researchers. This paper reports on the efforts of a child mental health clinic to build a community consensus around addressing violence that affects youth and all members of the community. We describe and give case examples regarding our approach to acquiring the perspectives of the community, particularly that of youth, discuss key themes and implications that emerged from our work, and offer preliminary recommendations for designing a youth violence prevention initiative in a disenfranchised community. Copyright © 2007 John Wiley & Sons, Ltd.     

Beyond totem and idol,the sexuate other

The author interprets idolatry, totemism, sacrilege and taboo through her theory of sexual difference and her study of Eastern spirituality. She argues that the taboo on spirituality in Western culture has cancelled difference, resulting in our current forms of idolatry. Preserving difference, however, would allow the transcendence of the human other to exist. The task of learning to respect difference is central to human spirituality and spiritual progression. The article is a translation of “La transcendance de l’autre” in Autour d’idôlatrie: figures actuelles de pouvoir et de domination, Ed. Bernard Van Meenen, Publications des Facultés Universitaires Saint-Louis, Brussels: 2003.