Does a row of objects comprise a boundary? How children miss the forest for the trees in spatial navigation.

Unlike children's early ability to navigate by continuous boundaries, their ability to extract geometric information from an array of objects emerges gradually over childhood. To investigate children's developing representation of object arrays for navigation and its relation to their mental representation of the global spatial layout, reorientation behavior was tested in 146 children (4-9 years, 78 male children and 68 female children, Italian) with rectangular arrays made up of 20 objects. Posttest questions on children's spatial language and their mental and pictorial representation of the environment were administered.

Technology Use and Familiarity as an Indicator of Its Adoption in Museum by People with Intellectual Disabilities.

This paper describes the process of co-design of technological products to increase museum accessibility and engagement in visitors with mild or moderate intellectual disabilities (IDs). By using an Inclusive Research approach, a multidisciplinary team of experts, including researchers in Users Experience (UX), psychology, and education, museum curators and a group of participants with IDs (n=9) have participated as the research team. Participants with IDs were involved in two rounds of interviews.

Author Correction: The spatiotemporal organization of episodic memory and its disruption in a neurodevelopmental disorder.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

The spatiotemporal organization of episodic memory and its disruption in a neurodevelopmental disorder.

Recent theories of episodic memory (EM) posit that the hippocampus provides a spatiotemporal framework necessary for representing events. If such theories hold true, then does the development of EM in children depend on the ability to first bind spatial and temporal information? And does this ability rely, at least in part, on normal hippocampal function? We investigated the development of EM in children 2-8 years of age (Study 1) and its impairment in Williams Syndrome, a genetic neurodevelopmental disorder characterized by visuospatial deficits and irregular hippocampal function, (Study 2) by implementing a nonverbal object-placement task that dissociates the what, where, and when components of EM. Consistent with the spatiotemporal-framework view of hippocampal EM, our results indicate that the binding of where and when in memory emerges earliest in development, around the age of 3, and is specifically impaired in WS.

What gestures reveal about cognitive deficits in Williams Syndrome.

Gestures have a central role in speaking and thinking about spatial information. The goal of the present study is to examine the function of gestures in Williams Syndrome (WS), a genetic disorder characterized by spatial impairments and a preservation of communication. The study's subjects were 11 WS individuals and 22 typically-developing controls who performed a narrative task.

Gestural communication in children with autism spectrum disorders during mother-child interaction.

Children with autism spectrum disorders display atypical development of gesture production, and gesture impairment is one of the determining factors of autism spectrum disorder diagnosis. Despite the obvious importance of this issue for children with autism spectrum disorder, the literature on gestures in autism is scarce and contradictory. The purpose of this study was to analyze gestural communication in children with autism spectrum disorder during spontaneous mother-child interaction.