Studies on human and animals shed light on the unique hippocampus contributions to relational memory. However, the particular role of each hippocampal subregion in memory processing is still not clear. Hippocampal computational models and theories have emphasized a unique function in memory for each hippocampal subregion, with the CA3 area acting…

Over a five year period, a university clinic performed psychological evaluations of 102 adults (including 85 college students) who reported that they were experiencing learning or attention problems. Of 92 persons who completed the evaluation, 40 (43.5%) received no diagnosis, 7 (7.6%) received the diagnosis of ADHD, 29 (31.5%) received the…

The short-term memory of 24 retarded and 24 nonretarded individuals, aged 10 to 14, under conditions of restricted cognitive strategy use was investigated. An attempt was made to determine whether short-term memory difficulties of persons with mental retardation are caused by deficits in voluntary cognitive strategies, such as the organization and…

Until recently it has been possible only to measure the behavioral products of cognitive processing, e.g. reaction time. However, this is a rather indirect way of studying brain substrates of cognition. Psychophysiological techniques can be used to study the neural mechanisms of cognition. In this experiment brain electrical activity was measured…

Although traditional learning theories are based on a demonstrative view of cognition, human beings tend to reason both demonstratively and dialectically. To examine the dialectical theory five studies were conducted. In the first study subjects rated words that could be used as personality descriptors for likability and subsequently learned them…

Overt rehearsal and free recall performance was analyzed longitudinally in two experimental testing sessions at 7 and later at 9 years of age. Measures of short- and long-term memory recall, and two measures of input processing were obtained. Significant increases between age levels were exhibited by all variables except short-term memory.…

Nouns were presented in triads as pictures, printed words, or spoken words and followed by various types of interference. Measures of short- and long-term memory were obtained. In short-term memory, pictorial superiority occurred with acoustic, and visual and acoustic, but not visual interference. Long-term memory showed superior recall for…

Reasons for poor performance on the Digit Span subtest of the Wechsler Intelligence Scale for Children-Revised were examined, using learning disabled (LD) children who performed poorly on the test, LD children who performed normally, and average children. One LD group was unable to establish mnemonic codes for familiar auditory stimuli.…

Two experiments on children's inferences and associative memory provided a supportive test of fuzzy-trace theory. Results indicated that false recognition of associated instances with delay declined for all children, and categorical inferences increased for older children. Verbatim memory and inferences were uncorrelated under short delay but…

Examines short-term memory for spoken words ignored at the time of their presentation. Age differences in the persistence of memory was found. Suggests that relatively attention-free properties of short-term memory may change with development in childhood, and priority should be given to distinguish maturational and experiential influences on…

Four experiments investigated phonemic and visual similarity effects in 5- and 10-year olds. Results suggested that young children rely on modality-dependent codes, which are probably automatically activated, and do not use a speech-based memory code for drawings and words. This pattern of findings appeared to be independent of culture and…

Examines subjects' processing in misleading test items. Suggests that the M-power for children, when assessed behaviorally, may increase with age in a discrete manner, and have the potential to generate interval scales of measurement. In addition, suggests that, in light of the results, what statisticians often consider "error of…

Background: The Towers of London (TOL) and Hanoi (TOH) have been viewed as equivalent measures of planning and/or problem solving, although recent evidence in adults suggests that the underlying measurement characteristics of these two tasks may differ. As tower tasks are one of the few instruments that can be used to assess executive functioning…

Visual recognition memory is a robust form of memory that is evident from early infancy, shows pronounced developmental change, and is influenced by many of the same factors that affect adult memory; it is surprisingly resistant to decay and interference. Infant visual recognition memory shows (a) modest reliability, (b) good discriminant…

In 3 experiments, participants saw lists of 16 words for free recall with or without a 6-digit immediate serial recall (ISR) task after each word. Free recall was performed under standard visual silent and spoken-aloud conditions (Experiment 1), overt rehearsal conditions (Experiment 2), and fixed rehearsal conditions (Experiment 3). The authors…