The effect of signal probability on the slope of the receiver operating characteristic given by the rating procedure

Signal detection theory (SDT) requires that the slope of the receiver operating characteristic (ROC) is independent of the probability of signal and noise. But it has been shown that when the rating procedure is applied to detection, the slope of the receiver operating characteristic may increase as a function of the probability of the signal (Schulman & Greenberg, 1970). This presents a serious problem for signal detection theory. This problem is examined in relation to a recent theory of criterion setting (Treisman & Williams, 1984), and an explanation for the effect of signal probability on ROC slope is derived which is compatible with SDT. Further data on the relation between signal probability and ROC slope are reported.     

Psychometric properties of the Wolpe-Lazarus assertiveness scale

The psychometric properties of the Wolpe-Lazarus Assertiveness Scale (WLAS) were evaluated with a sample of 100 male and 157 female psychiatric patients. There were no significant differences with regard to males and females for total WLAS scores. The WLAS seems to be internally consistent and has acceptable split-half and test-retest reliabilities. A factor analysis performed separately for males and females indicates that the 10 most prominent factors account for about 60% of the accumulated variance. The primary factor, shared by males and females, was labeled General Expressiveness. There was little evidence for the external validity of the WLAS when total scores were correlated with performance on a role play test. However, when WLAS factor scores were evaluated in light of role played performance, somewhat better evidence of the external validity of the WLAS was found in two of the factors for the females.     

Neural quantum theory: How strongly does the occurrence of rational intercept ratios support it?

The evidence for the neural quantum theory of sensory discrimination which is currently given most weight is the occurrence of intercept ratios involving small integers, such as 2:1. The importance ascribed to them derives from the implicit assumption that other theories of discrimination predict that they should be rare. This assumption is examined for the statistical decision model of discrimination. It is shown that if the latter applies, the frequency with which such ratios might be expected to occur would not be negligible and might be quite high. Thus such ratios give far less support to the neural quantum theory than has been supposed.     

The relationship between assertion and sociometric status of children

A correlational study was conducted in an effort to examine the relationship between children's level of assertive skill and their social (sociometric) status. The Ss were 15 male and 15 female elementary school children ranging in age from 9 to 11 yr. Each S was administered: (a) positive and negative peer nominations and roster and rating scale sociometrics; (b) self-report questionnaires concerning their assertive behavior; and (c) standardized interviews to assess knowledge of assertive behavior. In addition, teachers' ratings of children's interpersonal behavior were obtained. Results indicated some degree of correspondence between assertion indices and sociometric ratings. However, correlation coefficients generally were in the low-to-moderate range. Also, several scales from children's self-report and teacher's ratings of children's assertive behavior differentiated high- and low-popular children. Results are discussed in terms of: (1) the utility of employing multiple criteria in assessing social functioning of children; and (2) the need to determine empirically the relevance of assertive and other interpersonal skills in childrens' social repertoires.     

Socialization and cognition in children between the age of 18 and 24 months

A cross-cultural study of mother–child dyads was set up to test the hypothesis that sociocultural differences, mediated by variations of maternal intervention, influence the way in which the child manipulates objects and, thereby, his cognitive and social competences. Two series of observations were conducted with three groups of children aged 18–24 months (15 from the American middle class, 15 from French families and 15 from North African families—the last two groups both underprivileged): (a) ‘naturalistic’ observations of two systems of interaction (child–mother and child–children interaction) showed that each child is characterized by one type of object manipulation (protected, induced, activated or autonomous) and that maternal intervention varies with the sociocultural background; assessment of the child's behavioural sequences unravelled his strategies for solving and avoiding conflicts with his peers; (b) observations of the child with a standardized material permitted an evaluation of his cognitive competences for spontaneous problem-solving. Regarding the assumptions of our hypothesis, the results furnish the following conclusions: (1) social and cognitive competences are related to the object manipulation type. In all samples, children characterized by ‘activated’ and ‘autonomous’ manipulation obtain the better results; (2) maternal intervention differs among the samples depending on the sociocultural background; these differences (limitation and physical contact) do not correspond to differences in types of manipulation; (3) type of manipulation is an interactive construction; it characterizes the functioning of the mother–child dyad and its prevailing dynamics between permanence and change. ©1997 by John Wiley & Sons, Ltd.     

Beyond statistical significance: Five principles for the new era of data analysis and reporting

A crisis of confidence in research findings in consumer psychology and other academic disciplines has led to various proposals to abandon, replace, strengthen, or supplement the null hypothesis significance testing paradigm. The proliferation of such proposals, and their often-conflicting recommendations, can increase confusion among researchers. We aim to bring some clarity by proposing five simple principles for the new era of data analysis and reporting of research in consumer psychology. We avoid adding to researchers' confusion and proposing more onerous or rigid standards. Our goal is to offer straightforward practical principles that are easy for researchers to keep in mind while analyzing their data and reporting their findings. These principles involve (1) interpreting p-values as continuous measures of the strength of evidence, (2) being aware of assumptions that determine whether one can rely on p-values, (3) using theory to establish the applicability of findings to new settings, (4) employing multiple measures of evidence and various processes to obtain them, but assigning special privilege to none, and (5) reporting procedures and findings transparently and completely. We hope that these principles provide researchers with some guidance and help to strengthen the reliability of the conclusions derived from their data, analyses, and findings.     

The Age of Discoveries and Patriotism: James Darmesteter's Assessment of French Orientalism

The rapid development of Orientalism in the nineteenth century played a fundamental role in the expansion of our prior conceptions of various religious traditions. In this article, I will analyse James Darmesteter's assessment of the development of French Orientalism. He discussed this issue in his Essais orientaux (1883a). First, I will describe the discoveries mentioned by Darmesteter. Second, I will highlight his comments about the contributions of French scholars to the development of orientalism. Finally, I will analyse the relation between the Franco–German War (1870–71) and Darmesteter's Essais. The article will show that the military vocabulary used by Darmesteter is a clear indication of the impact of the war on his writing.     

Interactions Between Exogenous Auditory and Visual Spatial Attention

Six experiments were carried out to investigate the issue of cross-modality between exogenous auditory and visual spatial attention employing Posner's cueing paradigm in detection, localization, and discrimination tasks. Results indicated cueing in detection tasks with visual or auditory cues and visual targets but not with auditory targets (Experiment 1). In the localization tasks, cueing was found with both visual and auditory targets. Inhibition of return was apparent only in the within-modality conditions (Experiment 2). This suggests that it is important whether the attention system is activated directly (within a modality) or indirectly (between modalities). Increasing the cue validity from 50% to 80% influenced performance only in the localization task (Experiment 4). These findings are interpreted as being indicative for modality-specific but interacting attention mechanisms. The results of Experiments 5 and 6 (up/down discrimination tasks) also show cross-modal cueing but not with visual cues and auditory targets. Furthermore, there was no inhibition of return in any condition. This suggests that some cueing effects might be task dependent.