One of the objectives of the present study was to examine the role of conceptual structure in learning when position in the series and stimulus number were not confounded. (Author/RK)

Three experiments tested the generality of the conclusion that associative unlearning is minimal in the A-B, A-D paradigm. In Experiment 1, single-trial study of A-D, following single-trial study of A-B, did not produce retroactive inhibition in the recognition of A-B. In Experiment 2, A-B was acquired by associative matching. The interpolated…

Findings are most consistent with a mediation interpretation of transfer. (Authors)

The purpose of this study was to determine if implicit associational responses (IARs) occur to individual words presented as pairs for associative learning. The occurrence of IARs was determined by a YES-NO recognition test, and IARs for words presented singly for study provided a base line. For all condition, false recognitions to assumed IARs…

This study investigated verbal learning when separate tasks were presented simultaneously, with variations in the number of tasks specified to be learned and in the number of tasks presented. Results indicated that the effect of certain independent variables was similar to the effect found when tasks were learned singly. The spacing effect, for…

The concepts in a hierarchically structured list consisting of 24 number-word pairs were aligned systematically with position and numbers, or with the number stimuli only. Some lists involved an alignment appropriate to only the lowest conceptual level. Other lists were completely unstructured when viewed in terms of either position or number. The…

Little is known about the accuracy of temporal codes for memories, and still less about the nature of the codes. This report addresses the central question of the mechanisms by which order information is attached to memories. The results of 16 experiments indicate the role of some independent variables on temporal coding in relatively short-term…

Several different issues in the temporal coding of words were subjected to experimental analysis. Two experiments evaluated three response measures (recency judgments, position judgments, lag judgments) used to index temporal coding. Lag judgments were found to be of little use; subjects could make valid position and recency judgments without…

The central question of this report concerned the role of formal similarity in free recall of lists of trigrams and lists of three-letter word triads. Similarity was manipulated among trigrams by duplicating words. An initial study showed that lists of 16 letters were learned more rapidly than a list of 16 three-letter words. Therefore, in the…

This study examined the interrelationships among a number of episodic memory tasks and among various attributes of memory. A sample of 200 college students was tested for ten sessions; 28 different measures of episodic memory were obtained. In addition, five measures of semantic memory were available. Results indicated that episodic and semantic…

Subjects learned one, two, or three verbal lists simultaneously. Recall of the common list after 24 hours increased directly as the number of lists learned simultaneously increased. Assuming that simultaneous learning reduced interference, the interference was from extraexperimental sources of a proactive nature. (Author/CP)

A proposal to formulate nomothetic theories -- general statements or scientific laws -- in a way to allow for an immediate test of individual differences is presented. The need for such a proposal is cited in recent developments in structural model building in the area of memory called information processing and in the concern to bring individual…

Three response measures that have been used in the study of temporal codes for memories were evaluated. Subjects were shown a list of words singly for study, and recency, position, and language judgements were obtained. (SW)

Six experiments were intended to characterize more completely a phenomenon found when lists were first learned in isolation and then placed together for simultaneous learning. The subjects learned three lists, each list clearly distinguishable from the other. One of the lists was recalled, another was tested for frequency information, and the…

This research on factors influencing verbal learning and retention has used new techniques, attacked new problems, and tested new theories while trying to keep the experiments systematic. Studies conducted involved (1) the effect of varying the length of the intertrial interval on the learning and retention of different types of learning tasks;…