The authors investigated the units of selective attention within working memory. In Experiment 1, a group of participants kept 1 count and 1 location in working memory and updated them repeatedly in random order. Another group of participants were instructed to achieve the same goal by memorizing the verbal and spatial information in an…

Memory impairment is a core feature in schizophrenia (SZ). The aim of this study was to investigate short-term memory (STM) and its sensitivity to distraction with visual-spatial material. This study comprised 23 recent-onset SZ patients and 23 healthy controls. The degree of disruption upon recall from interleaving irrelevant items within a…

Gender differences in speed of perceptual comparison, of picture-plane mental rotation, and in switching costs between trials that do and do not require mental rotation, were investigated as a function of stimulus material with a total sample size of N=360. Alphanumeric characters, PMA symbols, animal drawings, polygons and 3D cube figures were…

Gene transcription is required for long-term memory (LTM) formation. LTM formation is impaired in a male-specific manner in mice lacking either of the two Ca[superscript 2+] / calmodulin-dependent kinase kinase ("Camkk") genes. Since altered transcription was suggested to cause these impairments in LTM formation, we used microarrays to screen for…

Successful interaction with the environment depends upon our ability to retain and update visuo-spatial information of both front and back egocentric space. Several studies have observed that healthy people tend to show a displacement of the egocentric frame of reference towards the left. However representation of space behind us (back space) has…

The study examined whether spontaneous variations in the frame of reference occurring over time have a more substantial effect on haptic mental rotation abilities of four blindfolded sighted subjects than of four adventitiously blind subjects. Results indicated the mental rotation functions for the two groups were virtually identical. (Author/DB)

Results show that at eight months of age ability to identify the site of an event after reorientation is based on the spatial relationship between the event and environmental features. The latter include features associated with room shape as well as a landmark at the site of the event. (Author/RH)

Focuses on whether 9- and 12-month-old infants understand that an object has been deleted from its initial hiding place as part of its displacement to a new location. (Author/NH)

A total of 20 infants either five or seven months of age viewed computer-generated random-lot displays in which accretion and deletion of texture provided the only information for contours. Infants of both age groups showed significant preferences to reach for the apparently nearer regions in the displays. (Author/RH)

To test their skill with spatial relationships, 4- to 6-year-olds were given problems in which they had to decide which one of an array of points was in line with two coordinate markers. Results establish that young children's grasp of Euclidean spatial relationships is more adequate than has been suggested. (Author/BE)

To test ways of predicting how efficiently visually impaired children learn travel skills, a criteria checklist of spatial skills was developed for close-body space, local space, and geographical/travel space. Comparison was made between predictors of efficient learning including subjective ratings of teachers, personal qualities and factors of…

Investigates the role active, self-produced movement might play in the type of rotation task typically used to assess spatial orientation in children 12 months to 18 months of age. Results indicated that, at least at 12 months, spatial orientation was indeed facilitated by allowing the infants (n = 13) to move through space on their own. (RH)

Two experiments were conducted concerning the development of spatial orientation during the second year of life. Both experiments were focused on oriented search for a hidden target object in the absence of landmarks, which can be accomplished by relating one's movements to knowledge of a target's location. (Author/RH)

Forty-eight young (mean age 28.9 years) and 44 older (mean age 67.2 years) males learned building layout and processed narratives about a character moving through the building. Both groups answered location room probes more quickly than other probes. Age differences in response time were greater for true probes about distant objects than for…

In two experiments, six-year olds and adults retrieved hidden objects or directed others to retrieve objects. Found that six-year olds' searches were more organized than their directions and that children and adults communicated spatial information in directions in an order of decreasing size of spatial unit. (BC)