Multitâche numérique et compréhension : une revue de la littérature

IntroductionIn recent years, many Anglo-Saxon studies in psychology have focused on the effects of digital technologies on learning, when they are used during study time in class or at home. Such uses have been called media multitasking. The purpose of this article is to report on these recent advances.Literature findingsThrough a literature review of 46 peer-reviewed articles published between 2010 and 2020, we first report information's on learners’ uses demonstrating the prevalence of media multitasking and its effect on academic achievement. We then show that these uses can interfere with the retention of learning content, as well as with comprehension, under certain conditions and in a non-systematic way.Discussion–conclusionFinally, we discuss some recommendations that can be drawn from these studies: considering technologies and including their uses during learning or limiting their uses, depending on educational choices.     

An evaluation of the short-term impact of a media-based substance abuse prevention programme

A state-wide substance abuse prevention programme, entitled KidsInTouch, incorporated a multifaceted approach involving: (a) media-based interventions; and (b) parent training workshops. KidsInTouch was targeted at parents and their children, ages five to 12 years. The media-based interventions attempted to increase children's and parents' awareness and knowledge about substance abuse and prevention. In addition, the intervention advertised and solicited audience participation in parent training workshops. Parents participating in the parent training workshops, in comparison to the control parents, evidenced significant improvement in both alcohol and other drug knowledge and parenting skills. The implications of using the media and involving children and their parents in substance abuse prevention programmes are discussed.     

Images of midlife development among young,middle-aged,and older adults

This study examined patterns of perceived change across adulthood in a sample of 121 young (M age=19.8 years), middle-aged (M age=47.9 years) and older (M age=74.6 years) adults. Subjects rated amount of stress in life domains, salience of life course issues, and nature of personal attributes for young, middle-aged, and older targets. Seven prototypical patterns of perceived change were found. Midlife was seen as a period with many responsibilities, increased stress in several domains, and little time for leisure, but also as a peak in competence, ability to handle stress, sense of control, productivity, and social responsibility. The findings are discussed in terms of losses, which were seen primarily in the physical realm, and gains, which were mainly seen in the psychological and social realms.     

Image and anti-image covariance matrices from a correlation matrix that may be singular

Following the work of Tucker, Cooper, and Meredith, image and anti-image covariance matrices from a correlation matrix that may be singular are derived.     

Categorization of natural movements by pigeons: visual concept discrimination and biological motion

In three experiments, pigeons were exposed to a discriminated autoshaping procedure in which categories of moving stimuli, presented on videotape, were differentially associated with reinforcement. All stimuli depicted pigeons making defined responses. In Experiment 1, one category consisted of several different scenes of pecking and the other consisted of scenes of walking, flying, head movements, or standing still. Four of the 4 birds for which pecking scenes were positive stimuli discriminated successfully, whereas only 1 of the 4 for which pecking was the negative category did so. In the pecking-positive group, there were differences between the pecking rates in the presence of the four negative actions, and these differences were consistent across subjects. In Experiment 2, only the categories of walking and pecking were used; some but not all birds learned this discrimination, whichever category was positive, and these birds showed some transfer to new stimuli in which the same movements were represented only by a small number of point lights (Johansson's “biological motion” displays). In Experiment 3, discriminations between pecking and walking movement categories using point-light displays were trained. Four of the 8 birds discriminated successfully, but transfer to fully detailed displays could not be demonstrated. Pseudoconcept control groups, in which scenes from the same categories of motion were used in both the positive and negative stimulus sets, were used in Experiments 1 and 3. None of the 8 pigeons trained under these conditions showed discriminative responding. The results suggest that pigeons can respond differentially to moving stimuli on the basis of movement cues alone.     

Media exposure and language for toddlers from low-income homes

In the current study, we examined whether the quantity of toddlers’ exposure to media was related to language skills and whether meeting the American Association of Pediatrics (AAP) recommendations of limiting media exposure to one hour or less per day was related to language skills. We examined these associations in a sample of toddlers (N = 157) living in low-income homes. Toddlers were about two years of age (M = 28.44 months, SD = 1.48 months) during the first visit when parents reported on toddlers’ exposure to media in the home. Toddlers were about three years of age (M = 33.61 months, SD = 1.06 months) during the second visit when direct measures of toddlers’ expressive and receptive language and receptive vocabulary skills were completed. Controls were child gender, race, mothers’ education, marital status, work status, and center-based child care. Results indicated that more frequent exposure to media was related to lower expressive language, but not receptive language or receptive vocabulary. The predictor of AAP recommendation was not significantly related to any child language outcomes. These results suggest that media exposure may be related to the displacement of language-enhancing activities during a critical time for toddlers’ language development. However, the AAP media recommendation of one hour may not be related to language development.     

Parent language with toddlers during shared storybook reading compared to coviewing television

This study compares parent language directed at their toddlers while coviewing toddler-directed television and while storybook reading. Participants were 15- or 30- month-old children and their parent. A quantitative analysis of parent language revealed that it is more frequent, rich, and complex during reading relative to television viewing regardless of child age; although parents used more complex language and more diverse words with older children. The difference between media held even when the storybook text read aloud was not considered in the analysis. Consistent with the results of earlier research, shared book reading produces more and richer verbal interactions with toddlers than coviewing television and is thus more likely to positively influence early language development.     

Driving without the brain? Effects of value predispositions,media attention,and science knowledge on public willingness to use driverless cars in Singapore

This study employs the cognitive miser model and science literacy model as theoretical frameworks to investigate motivations behind public willingness to use driverless cars in Singapore. Findings from a large-scale survey of 1,006 adult Singaporeans indicate that public willingness to use driverless cars was strongly related to value predispositions, especially affect. Aside from having a direct relationship with willingness to use driverless cars, this study found that affect also had an indirect relationship with willingness to use driverless cars via benefit perceptions. Meanwhile, findings failed to reveal significant relationships between two types of science knowledge and willingness to use driverless cars. The findings shed light on the current public opinion on driverless cars in Singapore and lend support to the cognitive miser model over the scientific literacy model. Theoretical and practical implications are discussed.     

Why do doctored images distort memory?

Doctored images can cause people to believe in and remember experiences that never occurred, yet the underlying mechanism(s) responsible are not well understood. How does compelling false evidence distort autobiographical memory? Subjects were filmed observing and copying a Research Assistant performing simple actions, then they returned 2 days later for a memory test. Before taking the test, subjects viewed video-clips of simple actions, including actions that they neither observed nor performed earlier. We varied the format of the video-clips between-subjects to tap into the source-monitoring mechanisms responsible for the ‘doctored-evidence effect.’ The distribution of belief and memory distortions across conditions suggests that at least two mechanisms are involved: doctored images create an illusion of familiarity, and also enhance the perceived credibility of false suggestions. These findings offer insight into how external evidence influences source-monitoring.