摘要：
The integration of text and picture is the core of multimedia information processing. Relevant theories suggest that text and picture are processed through different channels in the early stage, and integrated in the late stage of processing. Based on these theories, the current study adopted measures of event-related potentials to examine the cognitive and neural processes of text-picture integration. The results showed that in the early stage of text-picture integration, picture processing evoked a more negative N1 over the occipital area and a N300 over the prefrontal area, which might reflect the discrimination process of visual stimuli and the imagery representation of the picture, respectively; in the late stage, the text-picture induced a N400 in the central area and an LPC over the central, parietal and temporal areas, which might be associated with the semantic activation and integration of text and picture, respectively. These results not only provide support for existing theories, but also further elucidate the dynamic neural processing of text-picture integration in terms of its temporal and spatial characteristics.
关键词：
Eye movement modeling examples;Multimedia learning;Presentation pace;Prior knowledge;Signaling
摘要：
In this study, three experiments were conducted to explore whether adding eye movement modeling examples (EMME) to a short narrated animation could facilitate visual processing during multimedia learning and learning outcomes, and whether the effects of EMME depended on the pace of lesson or prior knowledge level of the learners. In Experiment 1, college students viewed a system-paced animation on synaptic transmission that either did or did not include EMME. The EMME group paid more attention to relevant elements and performed better on learning outcomes. In Experiment 2, EMME facilitated visual processing and learning outcomes with system-pacing but not learner-pacing. In Experiment 3, both low and high knowledge learners showed improved visual processing and learning outcomes with EMME. In conclusion, adding visual signaling (or cueing) in the form of EMME can guide visual processing and improve learning outcomes in multimedia learning with a short lesson.
摘要：
Over the last 15 years, researchers have been increasingly interested in understanding the nature and development of children's selective trust. Three meta-analyses were conducted on a total of 51 unique studies (88 experiments) to provide a quantitative overview of 3- to 6-year-old children's selective trust in an informant based on the informant's epistemic or social characteristics, and to examine the relation between age and children's selective trust decisions. The first and second meta-analyses found that children displayed medium-to-large pooled effects in favor of trusting the informant who was knowledgeable or the informant with positive social characteristics. Moderator analyses revealed that 4-year-olds were more likely to endorse knowledgeable informants than 3-year-olds. The third meta-analysis examined cases where two informants simultaneously differed in their epistemic and social characteristics. The results revealed that 3-year-old children did not selectively endorse informants who were more knowledgeable but had negative social characteristics over informants who were less knowledgeable but had positive social characteristics. However, 4- to 6-year-olds consistently prioritized epistemic cues over social characteristics when deciding who to trust. Together, these meta-analyses suggest that epistemic and social characteristics are both valuable to children when they evaluate the reliability of informants. Moreover, with age, children place greater value on epistemic characteristics when deciding whether to endorse an informant's testimony. Implications for the development of epistemic trust and the design of studies of children's selective trust are discussed.
作者：
Li, Wenjing;Wang, Fuxing*;Mayer, Richard E.;Liu, Huashan
期刊：
Journal of Educational Psychology,2019年111(8):1382-1395 ISSN：0022-0663
通讯作者：
Wang, Fuxing
作者机构：
[Liu, Huashan; Li, Wenjing; Wang, Fuxing] Cent China Normal Univ, Sch Psychol, 152 Luoyu St, Wuhan 430079, Hubei, Peoples R China.;[Mayer, Richard E.] Univ Calif Santa Barbara, Dept Psychol & Brain Sci, Santa Barbara, CA 93106 USA.
通讯机构：
[Wang, Fuxing] C;Cent China Normal Univ, Sch Psychol, 152 Luoyu St, Wuhan 430079, Hubei, Peoples R China.
摘要：
Providing single-modality cueing (either visual cueing or auditory cueing) in multimedia lessons does not consistently improve learning outcomes. In 3 eye-tracking experiments, some students learned an onscreen lesson with an oral explanation of graphics and then took a posttest on the material (no cues group). Across all 3 experiments, students spent more time attending to the relevant portion of the graphic and performed better on posttests if coordinated cues were added to the lesson (coordinated dual cues group), in which key elements were spoken with deeper intonation (auditory cue) at the same time the element turned red in the graphic (visual cue). Presenting coordinated visual and auditory cues also resulted in better posttest performance than presenting only a visual cue (visual-only cues group) or auditory cue alone (auditory-only cues group) in Experiment 1, or presenting visual and auditory cues that were unmatched (mismatched dual cues group) in Experiment 2 or unsynchronized (visual-before-auditory cues group and visual-after-auditory cues group) in Experiment 3. These findings extend and sharpen the signaling principle concerning how best to highlight instructional material in multimedia learning, using coordinated auditory and visual cues. Educational Impact and Implications Statement When students receive an onscreen lesson with an oral explanation of graphics, they may not know where to look on the screen. In 3 experiments, students spent more time attending to the relevant portion of the graphic and performed better on posttests if coordinated cues were added in which key elements were spoken with deeper intonation (auditory cue) at the same time the element turned red in the graphic (visual cue). Presenting coordinated visual and auditory cues also resulted in better performance than presenting only a visual cue or auditory cue alone or presenting the two cues in unmatched or unsynchronized ways. Students benefit from coordinated visual and auditory cues when learning from an online lecture with narrated graphics.
