Anonymity and Diversity: A Phenomenology of Self-Formation in Urban Culture

Topoi - In this paper, I show how phenomenological analysis of unreflective dimensions of our experience has implications for our participation in an increasingly urban and multicultural world. I...     

A Five-Factor Measure of Dependent Personality Traits

This study provides convergent, discriminant, and incremental validity data for a new measure of dependent personality traits from the perspective of the five-factor model (FFM). Dependent personality trait scales were constructed as maladaptive variants of FFM facets (e.g., Gullibility as a maladaptive variant of FFM trust). Based on responses from 383 undergraduates, the convergent validity of the Five-Factor Dependency Inventory (FFDI) scales was tested with respect to 2 measures of the FFM, 6 dependency trait scales, and 4 measures of dependent personality disorder. Discriminant validity was tested with respect to FFM facets from alternative domains. Incremental validity was tested with respect to the ability of the FFM dependent personality trait scales to account for variance in 2 established measures of dependency, after variance accounted for by respective FFM facet scales and other measures of DPD was first removed. The results of this study provided support for the validity of the FFDI assessment of dependency from the perspective of the FFM.     

Changes in infants' affect related to the onset of independent locomotion

Previous research suggests that after gaining several weeks of independent locomotor experience, infants may show both more negative and more positive affect toward parents. However, this prior work has been based largely on parent report, and no studies have used longitudinal or naturalistic methods to chart changes in infants’ affective expressions as they gain locomotor ability. Fifteen infants were observed at home before, during, and after learning to crawl in two naturalistic contexts, free play and dyadic play. Expressions of negative affect during free play decreased after the onset of crawling, but there was no change in expressions of positive affect. At the same time, however, mothers reported an increase in both negative and positive reactivity. These results are discussed in terms of the contexts typically assessed during observations and the different sensitivities of mothers to infants’ expressions of affect. Several lines of evidence point to a potential role for independent locomotion in the reorganization of affective expressions.     

On coding the position of letters in words: a test of two models

Open-bigram and spatial-coding schemes provide different accounts of how letter position is encoded by the brain during visual word recognition. Open-bigram coding involves an explicit representation of order based on letter pairs, while spatial coding involves a comparison function operating over representations of individual letters. We identify a set of priming conditions (subset primes and reversed interior primes) for which the two types of coding schemes give opposing predictions, hence providing the opportunity for strong scientific inference. Experimental results are consistent with the open-bigram account, and inconsistent with the spatial-coding scheme.     

The effect of foregrounding on readers’ use of predictive inferences

This research extends previous attempts to determine whether subjects make predictive inferences during comprehension. For example, when subjects read a passage about someone falling out of a 14th-story window, do they infer that the person is dead? Previous research in which lexical decision, word naming, and recognition tasks have been used for detecting predictive inferences has had mixed results. In experiment 1, a word-stem completion task was used to test for predictive inferences. The word stems were formed from target inferences that followed either priming or control passages. The data revealed that predictive inferences are generated only about concepts that are foregrounded in the passages. In Experiments 2 and 3, lexical decision and naming were used to test for predictive inferences. The lexical decision data replicated the word-stem completion data. A control experiment ruled out a simple context-checking explanation for the lexical decision results. The naming data indicated that this tasks was not sensitive to elaborative inference generation. Theresults show that readers make predictive inferences, but do so selectively.     

Perceptions of Overt and Personality-based Integrity Tests

Differences in test-taker perceptions between overt and personality-based integrity tests were examined. Following administration of both types of integrity tests, 255 undergraduate students provided ratings of perceived face validity and perceived predictive validity. Following receipt of actual test scores, 126 test takers participated in a second phase of the study in which they reported perceptions of distributive justice. Test takers perceived overt integrity tests as having greater face validity and predictive validity than personality-based integrity tests. Perceptions of job-relatedness were not strongly related to test performance on either test type. Distributive justice perceptions were related to test performance, but not type of integrity test.     

Sexual dimorphism in ultrasonic vocalizations of mice (Mus musculus): gonadal hormone regulation

Male mice (Mus musculus), during courtship and sexual behavior, vocalize substantially more 70-kHz ultrasounds than do females. Four experiments demonstrated that testosterone propionate (TP) substantially increased ultrasonic emissions and mounting by ovariectomized females and the long-term gonadectomized males and females increased their amount of ultrasound production in response to TP to approximately the same levels. From these results it is suggested that the sexual dimorphism normally seen in ultrasonic vocalizations can be accounted for by the activational effects of androgen in adulthood.     

Alcohol-induced conditioned aversion: genotypie specificity in mice (Mus musculus).

Acetaldehyde poisoning from ethanol ingestion may lead to aversion to ethanol among DBA mice but not among C57s, since the former are relatively deficient in aldehyde dehydrogenase activity. The present study paired ingestion of saccharin with a single intraperitoneal injection of one of four concentrations of ethanol for DBA/2J and C57BL/6J mice. Subjects were then given a two-bottle saccharin versus water preference test for 10 days. Substitution of saccharin for the taste of ethanol resulted in avoidance of saccharin with all concentrations of ethanol by DBAs but not by C57s, consistent with the conditioned taste aversion paradigm as a model for genetically mediated ethanol avoidance.     

Discriminating languages by speech-reading

The goal of this study was to explore the ability to discriminate languages using the visual correlates of speech (i.e., speech-reading). Participants were presented with silent video clips of an actor pronouncing two sentences (in Catalan and/or Spanish) and were asked to judge whether the sentences were in the same language or in different languages. Our results established that Spanish-Catalan bilingual speakers could discriminate running speech from their two languages on the basis of visual cues alone (Experiment 1). However, we found that this ability was critically restricted by linguistic experience, since Italian and English speakers who were unfamiliar with the test languages could not successfully discriminate the stimuli (Experiment 2). A test of Spanish monolingual speakers revealed that knowledge of only one of the two test languages was sufficient to achieve the discrimination, although at a lower level of accuracy than that seen in bilingual speakers (Experiment 3). Finally, we evaluated the ability to identify the language by speech-reading particularly distinctive words (Experiment 4). The results obtained are in accord with recent proposals arguing that the visual speech signal is rich in informational content, above and beyond what traditional accounts based solely on visemic confusion matrices would predict.