Background: Episodic memory deficits are a characteristic of cognitive dysfunction in people with Down syndrome (DS). However, less is known about the processes (i.e. encoding, retention or using learned information flexibly) that underlie these deficits. Method: We explored these abilities by administering a relational memory and inference task…

One of the foundational principles of human memory is that repetition (i.e., being presented with a stimulus multiple times) improves recall. In the current study a group of participants who studied a list of cue-target pairs twice recalled fewer targets than a group who studied the pairs only once, a negative repetition effect. Such a…

The prefrontal cortex (PFC) is known to contribute to memory processes such as encoding representations into long-term-memory (LTM) and retrieving these representations from LTM. However, the details of the PFC's contribution to LTM processes are not well known. To examine the characteristics of the PFC's contribution to LTM processes, we analyzed…

We examined associative and item recognition using the maintenance rehearsal paradigm. Our intent was to control for mnemonic strategies; to produce a low, graded level of learning; and to provide evidence of the role of attention in long-term memory. An advantage for low-frequency words emerged in both associative and item recognition at very low…

The purpose of this study was to gather evidence relative to the proposition that matching (recognition) performance for A-B pairs following an unlearning paradigm cannot be used to infer associative loss. The alternative was to assume that matching performance is based on frequency information which is independent of associative information. The…

This summary of research performed during the past five and one-half years and dealing with different attributes in memory functioning is organized around four attributes of memory: "Frequency Attribute: Verbal Discrimination" explores the development of the theory dealing with verbal discrimination tasks and lists several papers prepared during…

Three experiments examined the role of contingent associations in learning double-function, verbal-discrimination lists. Some 15-pair lists were constructed of category instances in such a way that the learning of three contingent associations based on category names would mediate correct performance for all 15 pairs. The first experiment gave no…

Mild memory impairment was detected in 28% of a sample of healthy community-dwelling older adults using the delayed recall trial of a word list learning task. Statistical analysis revealed that individuals with memory impairment also demonstrated relative deficits on other measures of memory, and tests of executive function, processing speed and…

Five experiments were conducted to address the question of whether source information could be accessed in the absence of being able to recall an item. The authors used a paired-associate learning paradigm in which cue-target word pairs were studied, and target recall was requested in the presence of the cue. When target recall failed,…

The purposes of this study were to determine if test stimulus was a member of the memory set and if items in an interactive image held in short term memory (STM) could be scanned simultaneously. In experiment one, 50 university subjects compared a test word with a set of one to three words held in STM. The rate of STM search was obtained by…

A theoretical explanation of the phenomenon of recognition failure and a presentation of seven experiments investigating performance. Recognition failure is reduced when a more stringent recognition criterion is used, essentially eliminated when the proper access test is used and significantly reduced when variability in recognition performance is…

The relation of arousal to retention in free learning was studied in a 3 x 2 design employing 48 undergraduates as Ss, three list conditions (high arousal, low arousal, mixed list) and two retention intervals (immediate and 3 days). Arousal value of the words was based on earlier studies. Contrary to previous paired-associate studies, no…

In three experiments employing 60 Ss, arousal was manipulated by white noise during paired-associate, serial, and free learning in an effort to investigate the relationships of arousal and long-term recall. Previous research suggested that high arousal in the paired-associate paradigm leads to better retention relative to low arousal. The present…