The relationship between self-concept and a healthy lifestyle in adolescence: an exploratory model

A gender-based model has been designed to study the relationships that exist among self-concept dimensions and some health-promoting behaviours (consumption of healthy food and participation in sports) and health-risk behaviours (consumption of tobacco, alcohol, cannabis and unhealthy food). The model was employed on a representative sample of 1,038 adolescents from the Valencian Community, aged between 15 and 18 years old (528 girls and 510 boys, M age= 16.3; SD= .92). Path analysis with the Lisrel VIII program maximum likelihood method was used. The results show the model's good fit to the data with regard to both the boys (chi 2 /gl= 2.57; RMSR= .04; RMSEA= 0.5; GFI= .98; NNFI= .91; CFI= .97; CN= 350.10) and the girls (chi 2 /gl= 3.28; RMSR= .04; RMSEA= 0.6; GFI= .98; NNFI= .87; CFI= .95; CN= 284.42). For the two sexes, behavioural conduct, social acceptance and close friendship emerged as good predictors of health-risk behaviours. Athletic competence had an indirect influence on health behaviours, with participation in sports being a mediating variable in that relationship.     

A defense of the subordinate-level expertise account for the N170 component

A recent paper in this journal reports two event-related potential (ERP) experiments interpreted as supporting the domain specificity of the visual mechanisms implicated in processing faces (Cognition 83 (2002) 1). The authors argue that because a large neurophysiological response to faces (N170) is less influenced by the task than the response to objects, and because the response for human faces extends to ape faces (for which we are not expert), we should reject the hypothesis that the face-sensitivity reflected by the N170 can be accounted for by the subordinate-level expertise model of object recognition (Nature Neuroscience 3 (2000) 764). In this commentary, we question this conclusion based on some of our own ERP work on expert object recognition as well as the work of others.     

Single-trial learning of "what" and "who" information in a gorilla (Gorilla gorilla gorilla): implications for episodic memory

Single-trial learning and long-term memory of "what" and "who" information were examined in an adult gorilla (Gorilla gorilla gorilla). We presented the gorilla with a to-be-remembered food item at the time of study. In Experiment 1, following a retention interval of either approximately 7 min or 24 h, the gorilla responded with one of five cards, each corresponding to a particular food. The gorilla was accurate on 70% of the short retention-interval trials and on 82% of the long retention-interval trials. In Experiment 2, the food stimulus was provided by one of two experimenters, each of whom was represented by a card. The gorilla identified the food (55% of the time) and the experimenter (82% of the time) on the short retention-interval trials. On the long retention-interval trials, the gorilla was accurate for the food (73%) and for the person (87%). The results are interpreted in light of theories of episodic memory. Electronic Publication     

Role of cholinergic system on the construction of memories: taste memory encoding

There is a large body of evidence suggesting that cholinergic activity is involved in memory processes. It seems that cholinergic activity is essential to learn several tasks and recent works suggest that acetylcholine plays an important role during the early stages of memory formation. In this review, we will discuss the results related to taste memory formation, focusing particularly on the conditioned taste aversion paradigm. We will first give evidence that nucleus basalis magnocellularis is involved in taste memory formation, due to its cholinergic projections. We then show that the cholinergic activity of the insular (gustatory) cortex is related to the taste novelty, and that the cholinergic signals initiated by novelty are crucial for taste memory formation. Then we present recent data indicating that cortical activation of muscarinic receptors is necessary for taste trace encoding, and also for its consolidation under certain circumstances. Finally, interactions between the cholinergic and other neuromodulatory systems inducing intracellular mechanisms related to plastic changes will be proposed as important processes underlying gustatory memory trace storage.     

Dishabituation processes in height fear and dental fear: an indirect test of the non-associative model of fear acquisition

The fear dishabituation hypothesis described in the non-associative model of fear acquisition was tested in a longitudinal birth cohort study. Results were consistent with height fear and phobia dishabituation. That is, 're-emergence' of a fear of heights occurred between age 11 and 18 years among individuals who reported higher levels of non-specific stress at age 15. Interestingly, there was no evidence for dental fear dishabituation--a finding consistent with the non-associative model of fear acquisition. Strengths and weaknesses of the study were considered and the results discussed in relation to laboratory-based findings on (dis)habituation.     

Gender Stereotypes in Portuguese Television Advertisements

This study examined the portrayal of men andwomen in a sample of Portuguese television commercials,attempting to replicate and extend past investigationsdone in America, Australia, Britain, and Italy. The aim was to update Portuguese research andto compare findings across cultures. Three hundred andfour evening commercials were content analyzed by tworaters, one male and the other female, to check reliability. The attributes of each of theircentral figures were classified into 11 categories:gender, mode of presentation, credibility, role,location, age, argument, reward type, product type,background, and end comment. Strong evidence of differencesin the presentation of male and female characteristicswas obtained. The implications of results for thedevelopment and maintenance of gender roles arediscussed.     

The role of interpersonal movement synchronisation in empathic functions: Insights from Tango Argentino and Capoeira

Although evidence points to a role for kinesthetic empathy (i.e. spontaneous interpersonal movement imitation and synchronisation) in social interaction, its relationship with emotional and cognitive aspects of empathy is unknown. We compared empathy in Tango and Capoeira experts, which crucially depend on ongoing, mutual interpersonal synchronisation, with empathy in practitioners of Salsa and Breakdance, respectively, which demand less interpersonal synchronisation but are comparable concerning movements and setting. Kinesthetic empathy was increased in the Tango and Capoeira groups. Although no group differences in other aspects of empathy were detected, kinesthetic empathy correlated with emotional and cognitive empathy. Taken together, trait kinesthetic empathy varies in the general population, and appears increased in synchronisation experts.     

A Study of the Ethical Dilemmas Experienced by School Psychologists in Portugal

This study examines the ethical dilemmas and difficulties encountered by Portuguese school psychologists. As part of a larger survey, participants were asked about ethical issues faced in daily practice and asked to describe ethical incidents. Of the 477 respondents, 274 reported 441 ethically troubling or challenging situations. Responses were coded into a six-category system based on the code of ethics of Portuguese psychologists. Most of the reported dilemmas concerned privacy and confidentiality principles (53%). Results are discussed in light of relevant literature and international findings. Implications for the development of the profession and future research are provided.