Focusing in statement interpretation

The present study reports on the processing strategies used by young children (7 and 9) in a task of statement interpretation. The statements were composed of two assertions, presented either in parataxis (Peter sees, he has a marble) or in a modal structure (Peter sees that he has a marble); variations on the form of the verb (affirmative or negative) and on the subjects of the two predicates (same subject or different subjects) were also taken into account. Through the study of the processing order of the two assertions, the purpose was to bring out the phenomena of semantic focusing on one or the other piece of information. The task used was a construction task: The child had to enact the statements with the help of various elements corresponding to the different assertions. Main results showed that, when the information was presented in parataxis, it was generally processed in the enunciation order. On the other hand, in the modal form the focusing was clear: It bore on the dictum (to have a marble) in the affirmative form, and on the modal verb (Peter does not see...) when it was negative. The interpretation of the various focusing processes are discussed.     

Effects of top-down guidance and singleton priming on visual search

Recent literature suggests that observers can use advance knowledge of the target feature to guide their search but fail to do so whenever the target is reliably a singleton. Instead, they engage in singletondetection mode—that is, they search for the most salient object. In the present study, we aimed to test the notion of a default salience-based search mode. Using several measures, we compared search for a known target when it is always a singleton (fixed-singleton search) relative to when it is incidentally a singleton (multiple-target search). We examined the relative contributions of strategic factors (knowledge that the target is a singleton) and intertrial repetition effects (singleton priming, or the advantage of responding to a singleton target if the target on the previous trial had also been a singleton). In two experiments, singleton priming eliminated all the differences in performance between fixed-singleton and multiple-target search, suggesting that search for a known singleton may be feature based rather than salience based.     

Object-based selection: the role of attentional shifts

The objective of this paper was to investigate under what conditions object-based effects are observed. Recently, Watson and Kramer (1999) used a divided-attention task and showed that unless top-down factors induce a bias toward selection at a higher level, object-based effects are obtained when same-object targets belong to the same uniformly connected (single-UC) region, but not when they belong to different single-UC regions grouped into a higher order object (grouped-UC regions). We refine this claim by proposing that a critical factor in determining whether or not object-based effects with grouped-UC regions are observed is the need to shift attention. The results of four experiments support this hypothesis. Stimuli and displays were similar to those used by Egly, Driver, and Rafal (1994). Subjects had to make size judgments. Using different paradigms, we obtained object-based effects when the task required shifts of attention (spatial cuing, same vs. different judgment with asynchronous target onsets), but not when attention remained either broadly distributed (same vs. different judgment with simultaneous targets) or tightly focused (response competition paradigm).     

Refining the dual-stage account of intertrial feature priming: Does motor response or response feature matter?

Numerous studies have shown that repetition of search-relevant attributes facilitates visual search performance. For example, Maljkovic and Nakayama (1994) showed that when observers search for a target defined by its color and report its shape, repetition of the target color speeds search, an effect known as priming of pop-out. While intertrial feature priming in search was initially thought to affect perceptual processes, the idea that it also affects postselection stages of processing is increasingly acknowledged. However, because in previous studies repetition of the motor response has typically been confounded with repetition of the response feature, it is not clear what mechanisms underlie the postselection effect of intertrial priming. In the present study, we dissociated the two repetition types. The results showed that repetition of the target-defining attribute from the previous trial affects selection of the motor response but not discrimination of the response attribute. The implications for current accounts of intertrial priming are discussed.     

RACIAL AND GENDER BIASES IN MAGAZINE ADVERTISING

Recent evidence suggests that racial and gender biases in magazine advertisements may be increasing. To explore this possibility, a content analysis was performed on 10 years of fashion advertisements drawn from magazines geared toward White women, Black women, or White men ( N = 1,800 advertisements from 1985–1994). The results indicated that (a) except for Black females in White women's magazines, African Americans were underrepresented in White magazines; (b) female body exposure was greater than male body exposure, and White female body exposure rose significantly during the 10 years; (c) White women were shown in low-status positions nearly twice as often as were other models; and (d) Black women wore the majority of animal prints, most of which were patterned after a predatory animal. These findings suggest that racial and gender biases in magazine advertising persisted, and in some cases increased, between the mid-1980s and mid-1990s.     

COVID-19 : quel rôle pour les comités d’éthique ?

Let us take advantage of this state of health crisis to promote within the committees a real ethics of the discussion on research practices.