Unless reasoning

We report the results of two experiments investigating conditional inferences from conditional unless assertions, such as Juan is not in León unless Nuria is in Madrid. Experiments 1 and 2 check Fillenbaum's hypothesis about the semantic similarity of unless with if not and only if assertions; both also examine inferential endorsements (Experiment 1) and endorsements and latencies (Experiment 2) of the four logically equivalent conditional formulations: if A then B, if not-B then not-A, A only if B and notA unless B. The results of these experiments show the similarity of unless and only if confirming that the representation of both conditionals from the outset probably include two possibilities directionally oriented from B to A; results also confirm the especial difficulty of unless assertions. The implications of the results are discussed in the context of recent psychological and linguistic theories of the meaning of unless.     

Materialism as a predictor variable of low income consumer behavior when entering into installment plan agreements

• This paper explores the influence of materialism on consumer indebtedness among low income individuals who live in poor regions of Sao Paulo. A materialism scale was adapted to this context and used to describe the level of materialism among the population surveyed. Results obtained relative to the relationship between materialism and socio‐demographic variables are compared to those of previous studies. A logistic regression model was developed in order to characterize individuals who have an installment plan payment booklet—the main source of consumer credit for the population studied—and to differentiate them from those who do not, based on the materialism level, socio‐demographic variables and purchasing and consumer habits. The proposed model confirms materialism as a behavioral variable that is useful for forecasting the probability of an individual getting into debt in order to consume. Income had the biggest relative influence on the regression model, followed by materialism and age, controlled by gender.

Copyright © 2008 John Wiley & Sons, Ltd.     

Human values and social identities: A study in two collectivist cultures

The current study examines the value correlates of social identities (identification with in‐groups and geospatial units) in two collectivist cultures (Brazil, n = 471; Spain, n = 476). According to previous research, it was expected that subjects who score higher on social values would be more identified with the various traditional in‐groups and with the local geospatial units and that social identities would be predicted by different values among Brazilians and Spaniards. Subjects were undergraduate students (228 males; 719 females), with age ranging from 16 to 55 years (M = 21.9; SD = 4.57), from three states in Brazil (Paraíba, Distrito Federal, and São Paulo) and Spain (Pontevedra, Madrid, and Barcelona). They were administered the Individualism‐CollectivismQuestionnaire, the Basic Value Survey, the In‐group Identification Scale, the Geospatial Identification Scale, and a questionnaire with demographic questions (e.g., gender, age, religious affiliation). Results confirm that importance attributed to social values is correlated with traditional in‐group and local geospatial identification, and that values predicting social identities are different across cultures, especially in the case of values related to geospatial identification. Specifically, among the set of social human values, belonging and tradition were most important to explain social identities. Subjects that assigned more importance to privacy were less identified with traditional ingroups, independently of their national culture. Geospatial identification was based on the values religiosity and belonging for Brazilians, and tradition, social order, honesty, and power for Spaniards. In general, these findings corroborate previous ones, suggesting the existence of a common set of values to explain social identity, based on principally normative values (social order and tradition). Moreover, they indicate the specificity and complexity of the geospatial identification in Spain, where the values of honesty and power contribute to explaining it. In this country, it is possible that the determinants of geospatial identification surpass the social orientation endorsed by people.     

University students' achievement goals and approaches to learning in mathematics

Background Achievement goals (AG) and students' approaches to learning (SAL) are two research perspectives on student motivation and learning in higher education that have until now been pursued quite independently. Aims This study sets out: (a) to explore the relationship between the most representative variables of SAL and AG; (b) to identify subgroups (clusters) of students with multiple AG; and (c) to examine the differences between these clusters with respect to various SAL and AG characteristics. Sample The participants were 680 male and female 1st year university students studying different subjects (e.g. mathematics, physics, economics) but all enrolled on mathematics courses (e.g. algebra, calculus). Method Participants completed a series of questionnaires that measured their conceptions of mathematics, approaches to learning, course experience, personal 2 × 2 AG, and perceived AG. Results SAL and AG variables were moderately associated and related to both the way students perceived their academic environment and the way they conceived of the nature of mathematics (i.e. the perceptual‐cognitive framework). Four clusters of students with distinctive multiple AG were identified and when the differences between clusters were analysed, we were able to attribute them to various constructs including perceptual‐cognitive framework, learning approaches, and academic performance. Conclusio This study reveals a consistent pattern of relationships between SAL and AG perspectives across different methods of analysis, supports the relevance of the 2 × 2 AG framework in a mathematics learning context and suggests that AG and SAL may be intertwined aspects of students' experience of learning mathematics at university.     

Gesture and metaphor comprehension: Electrophysiological evidence of cross-modal coordination by audiovisual stimulation

In recent years, studies have suggested that gestures influence comprehension of linguistic expressions, for example, eliciting an N400 component in response to a speech/gesture mismatch. In this paper, we investigate the role of gestural information in the understanding of metaphors. Event related potentials (ERPs) were recorded while participants viewed video clips of an actor uttering metaphorical expressions and producing bodily gestures that were congruent or incongruent with the metaphorical meaning of such expressions. This modality of stimuli presentation allows a more ecological approach to meaning integration. When ERPs were calculated using gesture stroke as time-lock event, gesture incongruity with metaphorical expression modulated the amplitude of the N400 and of the late positive complex (LPC). This suggests that gestural and speech information are combined online to make sense of the interlocutor’s linguistic production in an early stage of metaphor comprehension. Our data favor the idea that meaning construction is globally integrative and highly context-sensitive.     

Does IOR occur in discrimination tasks? Yes, it does, but later

When a stimulus appears in a previously cued location several hundred milliseconds after the cue, the time required to detect that stimulus is greater than when it appears in an uncued location. This increase in detection time is known as inhibition of return (IOR). It has been suggested that IOR reflects the action of a general attentional mechanism that prevents attention from returning to previously explored loci. At the same time, the robustness of IOR has been recently disputed, given several failures to obtain the effect in tasks requiring discrimination rather than detection. In a series of eight experiments, we evaluated the differences between detection and discrimination tasks with regard to IOR. We found that IOR was consistently obtained with both tasks, although the temporal parameters required to observe IOR were different in detection and discrimination tasks. In our detection task, the effect appeared after a 400-msec delay between cue and target, and was still present after 1,300 msec. In our discrimination task, the effect appeared later and disappeared sooner. The implications of these data for theoretical accounts of IOR are discussed.     

Evaluating performance in continuous experiments with feedback to subjects

Consider an experiment in which a subject guesses repeatedly at a randomly chosen target on a continuum. To guarantee a positive probability of success, the continuum is partitioned into a finite but large number of segments. The subject is given directional feedback. General guessing strategies are characterized, and an optimal strategy is identified. The hypothesis that the subject's performance can be explained by chance alone is of interest in such experiments. A test is developed based on comparing the subject's performance to expected performance using the optimal strategy. A skill-scoring procedure is developed for assessing a subject's performance in light of the strategy used, and a test based on skill-scoring is advanced.Research by the first author is supported in part by the Air Force Office of Scientific Research under grant AFOSR 77-3180.The authors wish to thank the referees for remarks that led to improvements in both content and clarity.     

Mobbing: its relationships with organizational culture and personal outcomes

A study dealing with the effects of both organizational culture and mobbing on personal and organizational outcomes of a sample of Spanish emergency workers, is reported here. It was found that there is a strong impact of organizational culture dimensions on mobbing, and that mobbing affects job satisfaction, organizational commitment and organizational citizenship behaviour. Results concerning organizational commitment show that this variable is not a mere effect of mobbing in general, but rather that it is also a direct impact of culture on this outcome.