Levels of explanation in the European Journal of Social Psychology

The nature of explanation in experimental social psychology is the subject of much controversy. To advance the debate, the present article provides a grid of analysis allowing a more [thorough study of experimental social psychologists] work. Four levels of explanation are distinguished as works can be seen as studying intra-individual processes (level 1), interindividual but intra-situational dynamics (level 2), effects of social position in a situational interaction (level 3) and intervention of general beliefs (level 4). An important characteristic of experimental work is the possibility of combining different levels of analysis in the same study, and of surpassing, in this way, the old dichotomy between [psychologizing] and [sociologizing] explanations. Experiments published in the first seven volumes of the European Journal of Social Psychology were explored within this framework.     

Length of outpatient treatment affected by extraversion: Still waters run long

It has often been shown that in outpatient settings, about half of the treatments are terminated after only a few sessions. The present study sought to investigate the contribution of personality traits to length of treatment in a behaviour therapy-oriented outpatient treatment setting. All patients admitted during a 1 yr period filled out a personality questionnaire before the start of treatment, and were followed for at least 1 yr. It was found that Introverts stayed much longer in therapy and got more treatment sessions than Extraverts. Level of Neuroticism did not influence length of treatment. Low Extraversion scores may be a reflection of more severe and enduring (trait-like) psychiatric symptomatology. Also, Introverts may need more time to engage in a therapeutic relationship.     

PET studies of language: An assessment of the reliability of the technique

In order to understand the basis of language in the brain, we must be able to describe the neurological systems that are used in language comprehension and production. In this paper, one technique for functional neuroimaging is discussed: measurement of blood flow change using positron emission tomography (PET). Two experiments were carried out investigating the usefulness of this method. One experiment examined the intrinsic time limitations of blood flow change as a measure of cognitive activity. A second issue considered is the replicability of the results obtained using this method. A comparison of two experiments containing the same conditions suggests that the results are replicable, when the experiments and method are similar. One case is discussed where the experiments differ; it is suggested that this is due to a difference in the materials used in the experiments, and that the difference has a principled basis.     

Do speakers have access to a mental syllabary?

The first, theoretical part of this paper sketches a framework for phonological encoding in which the speaker successively generates phonological syllables in connected speech. The final stage of this process, phonetic encoding, consists of accessing articulatory gestural scores for each of these syllables in a “mental syllabary”. The second, experimental part studies various predictions derived from this theory. The main finding is a syllable frequency effect: words ending in a high-frequent syllable are named faster than words ending in a low-frequent syllable. As predicted, this syllable frequency effect is independent of and additive to the effect of word frequency on naming latency. The effect, moreover, is not due to the complexity of the word-final syllable. In the General Discussion, the syllabary model is further elaborated with respect to phonological underspecification and activation spreading. Alternative accounts of the empirical findings in terms of core syllables and demisyllables are considered.     

La représentation sociale des droits de l'homme: Une recherche internationale sur l'étendue et les limites de l'universalité

La perception des violations des droits de l'homme par de jeunes individus insérés dans des contextes nationaux différents est-elle organisée selon des principes comparables à ceux d'experts ou d'institutions internationales? La présente étude contribue à élucider cette question en la situant dans le champ de la psychologie sociale. La représentation sociale des droits humains a été analysée par le biais d'un questionnaire standardisé soumis à des sujets de quatre pays (Costa Rica, France, Italie et Suisse) âgés de 13 à 20 ans. Les résultats montrent que les individus partagent dans une large mesure une conception institutionnelle des droits humains. De fortes variations à l'intérieur et entre les contextes nationaux apparaissent néanmoins, en particulier dans la délimitation des libertés individuelles et du contrôle étatique.     

Negative priming depends on prime-probe similarity: Evidence for episodic retrieval

It is well established that requiring a person to respond to a recently ignored object in a visual selection task leads to slower responding (i.e., negative priming). In the present experiment, subjects identified target letters flanked by incompatible distractor letters on prime and probe displays. Prime display distractors appeared as the target letter on one third of subsequent probe displays. We manipulated stimulus strength by means of intensity contrast between letter displays and their background. Displays were presented with either high contrast (white against a black background) or low contrast (dark gray against a black background). The important finding was that negative priming was maximal when prime and probe displays shared the same intensity contrast. These results suggest that greater similarity between prime and probe displays results in improved retrieval of prime display information. The results provide strong support for an episodic retrieval account of negative priming.     

Towards a refined structure of personality traits

In this article we pursue two goals. The first is a further articulation of the dimensionality of the Dutch trait domain. The second is a detailed mapping of the factorial trait structure, one which includes intelligible and proper niches for various nuances of the trait language and for different interpretations of the main factors of personality language. In realizing these goals, we discuss the reliance on theory in structuring and modelling the domain in question, the type of model to be used, and the comprehensiveness versus the economy of domain representation. The advantages and disadvantages of the simple structure model and the circumplex model are commented upon, and a new framework that integrates these two models is presented. The present results provide confirmation of the existence of five major dimensions that cover the trait domain: (I) Extraversion or Surgency, (II) Agreeableness, (III) Conscientiousness, (IV) Emotional Stability, and (V) Intellect or Openness to Experience. The newly developed representational model, revealing a refined structure of personality characteristics, not only clarifies some of the problems faced in interpreting the Big Five factors, but also forms a starting point for applications.     

La double dynamique sociale dans le développement cognitif

Dès les débuts de la psychologie sociale et développementale deux mécanismes ont été vus à l'oeuvre dans le développement cognitif: le conflit et l'imitation. Le premier devait rendre compte de l'innovation, le second de l'appropriation de l'héritage culturel. Les recherches actuelles sur le marquage social montrent que celui-ci peut remplir certaines fonctions réservées traditionnellement à l'imitation, mais ce rôle de reproduction peut nécessiter l'intervention du conflit. Une recherche est rapportée qui montre que, pour des enfants d'environ six ans et demi (N=160), l'intervention combinée du marquage social et du conflit socio-cognitif est un facteur important de progrès à une tâche de conservation de quantités.