Searching in the sand: Protracted video deficit in U.S. preschoolers' spatial recall using a continuous search space

Young children exhibit a video deficit for spatial recall, learning less from on-screen than in-person demonstrations. Some theoretical accounts emphasize memory constraints (e.g., insufficient retrieval cues, competition between memory representations). Such accounts imply memory representations are graded, yet video deficit studies measuring spatial recall operationalize memory retrieval as dichotomous (success or failure). The current study tested a graded-representation account using a spatial recall task with a continuous search space (i.e., sandbox) rather than discrete locations. With this more sensitive task, a protracted video deficit for spatial recall was found in children 4–5 years old (n = 51). This may be due to weaker memory representations in the screen condition, evidenced by higher variability and greater perseverative bias. In general, perseverative bias decreased with repeated trials. The discussion considers how the results support a graded-representation account, potentially explaining why children might exhibit a video deficit in some tasks but not others.

Research Highlights

• The task used a continuous search space (sandbox), making it more difficult and sensitive than spatial recall tasks used in prior video deficit research.
• Spatial recall among 4- and 5-year-old children was more variable after watching hiding events on screen via live video feed than through a window.
• Children's spatial recall from screens was more susceptible to proactive interference, evidenced by more perseverative bias in an A-not-B design.
• The results demonstrate memory representations blend experiences that accumulate over time and explain why the video deficit may be protracted for more difficult tasks.

     

Predictors of age-related and individual variability in autobiographical memory in childhood

ABSTRACT

Development of autobiographical memory is as a gradual process beginning in early childhood and continuing through late adolescence. Substantial attention has been paid to early childhood when first personal memories are formed; less attention has been focused on the flourishing of memories from the late preschool years onward. We addressed this void with a three-year cohort-sequential study of age-related changes in the length, completeness, and coherence of autobiographical narratives by children 4–10 years. We also examined the unique and combined variance in autobiographical narrative explained by children’s own language, maternal narrative style, domain-general cognitive abilities, non-autobiographical story recall, and memory-specific skills. There was substantial growth in autobiographical narrative skill across the 4–10-year period. Non-autobiographical story recall was a strong concurrent and cross-lagged predictor for all autobiographical narrative measures. Memory-specific and domain-general cognitive abilities systematically predicted narrative completeness and coherence but not length. Children’s language and maternal narrative style did not contribute additional variance when these predictors were considered. The findings highlight that age-related changes in autobiographical memory are the results of combined contributions of a variety of domain-general and domain-specific predictors.     

Multiple pedagogical conversational agents to support learner-learner collaborative learning: Effects of splitting suggestion types

This study experimentally investigated the design of effective interactions using pedagogical conversational agents (PCAs) in a learner-learner collaborative learning activity. While dyads engaged in a concept explanation task (explaining the mechanism of computer processing), PCAs served as facilitators and provided metacognitive suggestions to better improve learning performance. Previous studies have shown that learners who received several types of suggestions from multiple PCAs were motivated to produce effective explanations; this study then further explored the effects of using multiple PCAs in different roles, providing different types of facilitation. It was predicted that by using two different PCAs to offer suggestions with a delay, learners may be able to process information more efficiently, for example by paying closer attention to each type of suggestion. To investigate this possibility, two types of facilitating content, namely provision of metacognitive suggestions and advice on effective coordination, were each implemented into two role-playing PCAs, named the “explanation adviser” and the “communication adviser” respectively. The results show that when learners used PCAs playing different roles and offering suggestions corresponding to these roles, learners generated explanations related to the suggestions and improved performance (efficacy of explanations) in several areas, including learning performance, for example better understanding the concept and becoming able to explain it using a greater range of technical words. This study shows empirically how multiple PCAs can be effectively designed to implement roles yielding different types of suggestions. The advantages of using such methods and implementing such functions of PCAs are further discussed.     

Resource allocation for visual metaphor processing: A study of political cartoons

ABSTRACT

This paper is a study of visual metaphor processing in political cartoons, while secondary task reaction time was used to assess resource allocation when processing three types of visual metaphors, namely juxtapositions, fusions and replacements. Participants viewed a series of visual metaphors. At various intervals, they were invited to push a button whenever a probe appeared. Reaction times to detect the probes were recorded. Subsequently, participants performed recall and recognition tasks. Results showed that participants reacted faster to each successive probe, while metaphor type had no influence on reaction times. Concerning the recall task, the percentage of correctly recalled items was significantly lower for juxtapositions compared to replacements; results for fusions were in between the two. Recognition scores for juxtapositions and fusions were lower than those for replacements. These findings are discussed in the framework of visual metaphors literature, thus providing empirical support to visual metaphor processing.