Perceptual organization of complex auditory sequences: effect of number of simultaneous subsequences and frequency separation

Previous findings on streaming are generalized to sequences composed of more than 2 subsequences. A new paradigm identified whether listeners perceive complex sequences as a single unit (integrative listening) or segregate them into 2 (or more) perceptual units (stream segregation). Listeners heard 2 complex sequences, each composed of 1, 2, 3, or 4 subsequences. Their task was to detect a temporal irregularity within 1 subsequence. In Experiment 1, the smallest frequency separation under which listeners were able to focus on 1 subsequence was unaffected by the number of co-occurring subsequences; nonfocused sounds were not perceptually organized into streams. In Experiment 2, detection improved progressively, not abruptly, as the frequency separation between subsequences increased from 0.25 to 6 auditory filters. The authors propose a model of perceptual organization of complex auditory sequences.     

Development and Evaluation of a Decision Aid About Prenatal Testing for Women of Advanced Maternal Age

Objective: To develop and evaluate a decision aid designed to prepare patients of advanced maternal age for counseling about prenatal diagnostic testing. Setting: A regional genetics center. Design: A before/after study. Interventions: Participants used an audioguided workbook to learn about options and outcomes and to clarify personal risks, values, questions, and predispositions. Subjects: 21 women of advanced maternal age and 17 spouses. Main outcome measures: Knowledge of prenatal testing alternatives, decisional conflict, level of anxiety, and acceptability of the decision aid. Results: After using the decision aid, participants had significantly reduced decisional conflict (uncertainty) and a significant increase in knowledge. There was no effect on state or trait anxiety. More than three-quarters of participants were satisfied with the length, clarity, balance, and acceptability of the decision aid. Conclusions: The decision aid shows promise as a useful aid for preparing couples for counseling.     

Monte Carlo simulations and the chi-square test of independence

A Monte Carlo program for sampling 2 by 2 contingency tables from a user-specified population is discussed. Applications include computer-assisted instruction (CAI) of statistics, evaluation of actual vs nominal Type I error rates of the chi-square test of independence when expected frequencies are less than 10, and estimation of the power of the chi-square test.     

Conceptions of own versus others' outcomes: Manipulation by monaural attentional orientation

Previous research found that greater personal optimism was produced during selective left hemisphere activation. In that research the selective activation was manipulated by contralateral visual orientation of attention. The present experiment replicated and extended this effect using monaural stimulation. In addition, a significant reduction in variability of responding was found, as expected, in the monaural as compared to binaural groups, and a significant correlation was found between individual desire for control and optimism.     

A test of the moderating role of importance of appearance in the relationship between perceived scar severity and body-esteem among adult burn survivors

This study tested the hypothesis that the relationship between subjective burn scar severity and body-esteem is moderated by importance of appearance. Three hundred and forty-six adult burn survivors completed a mailed or online survey. The three subscales of the Body-Esteem Scale for Adolescents and Adults (BE-Appearance [satisfaction with general appearance], BE-Weight [weight satisfaction], BE-Others [others' evaluations of one's body and appearance]) were regressed onto sex, subjective burn scar severity, importance of appearance and their two- and three-way interactions. With one exception, the hypothesized main effects were significant in each of the regression equations. As hypothesized, importance of appearance moderated the relationship between subjective burn scar severity and body-esteem for BE-Appearance and BE-Other but not BE-Weight. The results of this study are consistent with the cognitive model of body-esteem. Clinical implications are discussed.     

Influence of consonantal context on the reading of vowels: evidence from children

When college students pronounce nonwords, their vowel pronunciations may be affected not only by the consonant that follows the vowel, the coda, but also by the preceding consonant, the onset. We presented the nonwords used by Treiman and colleagues in their 2003 study to a total of 94 first graders, third graders, fifth graders, and high school students to determine when these context influences emerge. According to some theories of reading development, early decoding is characterized by context-free links from graphemes to phonemes. However, we found that even children reading at the first-grade level (6-year-olds) were influenced to some extent by a vowel's context. The effect of context on vowel pronunciation increased in strength up to around the fifth-grade reading level (8- and 9-year-olds), and sensitivity to coda-to-vowel associations emerged no earlier than did sensitivity to onset-to-vowel associations. A connectionist model of reading reproduced this general pattern of increasing context effects as a function of training.     

When fiends become friends: the need to belong and perceptions of personal and group discrimination

The present article examines the role that the need to belong (NTB) plays in people's judgments of personal and group discrimination and in the attributions people make for potentially discriminatory evaluations. The authors hypothesized that the NTB motivates people to conclude that (a) whereas they rarely experience personal discrimination, (b) their fellow in-group members do experience discrimination. In Study 1, people high in the NTB reported experiencing lower than average levels of personal and higher than average levels of group discrimination. In Study 2, an experimental manipulation of the NTB yielded similar results. In Study 3, women who were motivated to be accepted by a bogus male participant were less likely to attribute his negative evaluations of their work to prejudice.     

Brief cognitive-behavioral phone-based intervention targeting anxiety about the threat of attack: a pilot study

A brief, cognitive-behavioral, phone-based intervention was employed with an Israeli sample experiencing anticipatory anxiety about potential war-related attacks. In this quasi-experimental controlled pilot study, the cognitive-behavioral therapy intervention (diaphragmatic breathing and a modified cognitive-restructuring technique) was compared with the standard hotline care administered when worried citizens called a mental health emergency hotline in Israel. Individuals (n=32) were administered anxiety and worry measures pre-intervention, post-intervention, and three days post-intervention. The results indicated that anxiety levels decreased for the experimental and control group immediately post-intervention; however, three days later, the levels of anxiety in the CBT group continued to decline, while anxiety levels in the control group reached pre-intervention levels on two of the three outcome measures. These results suggest that CBT can be effectively delivered by paraprofessionals over the phone, which is cost-effective and efficient. Limitations are considered, and implications for treating individuals coping with the threat of terrorism are discussed.     

Vowels, syllables, and letter names: differences between young children's spelling in English and Portuguese

Young Portuguese-speaking children have been reported to produce more vowel- and syllable-oriented spellings than have English speakers. To investigate the extent and source of such differences, we analyzed children's vocabulary and found that Portuguese words have more vowel letter names and a higher vowel-consonant ratio than do English words. In a spelling experiment, we found that Portuguese speakers used more vowels, but did not produce more syllabic spellings, than did English speakers. The differences that we observed are attributable to quantitative differences in the languages and their writing and letter name systems. They do not support the widespread idea that speakers of Romance languages pass through an additional, syllabic, stage of development.