Activation of the N-methyl-d-aspartate receptor (NMDAR) glycine site has been shown to accelerate adaptive forms of learning that may benefit psychopathologies involving cognitive and perseverative disturbances. In this study, the effects of increasing the brain levels of the endogenous NMDAR glycine site agonist D-serine, through the genetic…

In the last decade there has been an exponential increase in studies on neurobiological measures in childhood-onset schizophrenia (COS). There seems to be a consensus that structural changes in COS are more marked than in adolescence-onset (AdOS) or adult-onset schizophrenia (AOS). Atrophy of total brain volume is progressive throughout the course…

This study investigates word-storage structure and processes of organization and retrieval in 17 young schizophrenics and 13 normal subjects. (Editor)

Imagery and categorization were orthogonally varied in an assessment of recognition and recall of process schizophrenics (process group), reactive schizophrenics (reactive group), and controls (student group). (Editor)

This research examines different types of encoding strategies, in addition to semantic and organizational encodings, and their effects on schizophrenics' remembering. Based on Craik and Lockhart (1972), i.e., memory performance is a function of depth of encoding processing, this analysis compares schizophrenics' encoding processing with that of…

Attempts to determine whether PI (proactive inhibition) release for taxonomic word categories could be observed for chronic schizophrenics. (Author/RK)

The process of short-term memory scanning and recognition of common English words in 16 schizophrenics, 16 nonschizophrenic psychiatric patients, and 16 normals was investigated using the Sternberg item recognition procedure. This procedure has proved effective in isolating and clarifying the processes underlying mnemonic information processing.…

Assesses the effects of input and output interference on schizophrenic recall. Input interference is the interference resulting from the interpolation of items between presentation and recall of the probed item. Output interference is the interference resulting from the interpolation of responses between the presentation and recall of the probed…

A total of 15 acute schizophrenics, 11 acute psychotic depressives, and 15 normal subjects completed a multitrial free-recall task. Results indicated that with lists of relatively high semantic content, the recall impairment displayed by schizophrenics and depressives stems mainly from an inability to completely use perceived structuring of the…

Contributions in the first section of this volume are: "Learning to Identify Toy Block Structures" by Patrick Winston; "Beyond the Yellow-Volkswagen Detector and the Grandmother Cell: A General Strategy for the Exploration of Operations in Human Pattern Recognition" by Naomi Weisstein; "Visual Recognition in a Theory of Information Processing" by…