Two experiments were conducted to evaluate the context switch effect upon retrieval of the information about a cue-outcome relationship in human predictive learning. The results replicated the well-known effect of renewal of the cue-outcome relationship due to a context change after a retroactive interference treatment, as much as the null effect…

The three studies described in this section were undertaken to examine further aspects of depth of processing and to throw more light on the factors underlying good memory performance. (Author)

Examines experimental studies in which learning procedures such as reinforcement, direct instruction, and modeling are applied in an attempt to alter characteristics of children's information processing behaviors. Discusses whether the studies have demonstrated acquisition of generalized cognitive functions or merely elicitation of task specific…

The present study used a two-choice spatial probability-learning situation (Bitterman, 1975; Wilson & Oscar, 1966) in order to explore the hypothesis that Korsakoff patients differ from control subjects in the way in which they respond to changes in reinforcement contingencies. (Author)

Assesses the influence of rehearsal on recognition reaction times for items from target lists of a length exceeding the span of immediate memory. Also determines what effect, if any, the length of the target list has on recognition latencies that involve only retrieval from inactive memory. (Author/RK)

These experiments attempt to optimize the possibility of demonstrating blocking in a taste-aversion paradigm and to elucidate the conditions under which this interference occurs. (Author/RK)

To complement investigations of the direct effects of lithium toxicosis on consummatory behavior, these experiments were designed to determine the aftereffects on drinking of exposure to a conditioned stimulus previously paired with lithium. (Author/RK)

In four different experiments, brief illumination of a localized visual stimulus was followed by grain presentation unless the pigeon approached the light. Results indicate that although response-reinforcer relations do play a role, stimulus-reinforcer contingencies are the dominant factor in establishing and maintaining approaches to the…

In a nonmetric multiple-cue probability learning task involving 2 binary cue dimensions, it was found that Ss can learn to use configural or pattern information (a) when only the configural information is relevant, and in addition to the configural information, one or both of the cue dimensions are relevant. (Author/RK)

The present experiment uses a variation of the repeti design of Hebb (1961) to ask the question of the fate of individual items in the Brown-Peterson task at a time when, if interference does indeed dissipate, the old items that produce interference should no longer be available to compete with new items. (Author)

Different groups of 27 Ss learned lists of high- or low-imagery nouns or adjectives in a part-whole transfer experiment. (Editor)

Looks at the processes by which information from individual input events combines to form a mentally represented linear order. (Author/RK)

Comments on changes in the relation between experimental psychology and second language acquisition research. Notes that new themes borrowed from experimental psychology include practice effects, the power law, connectionism, implicit learning and miniature artificial languages. Argues that attempts to attribute language learning to implicit or…

Stress facilitates memory formation, but only when the stressor is closely linked to the learning context. These effects are, at least in part, mediated by corticosteroid hormones. Here we demonstrate that corticosterone rapidly facilitates synaptic potentiation in the mouse hippocampal CA1 area when high levels of the hormone and high-frequency…

In 5 experiments, a Hebb repetition effect, that is, improved immediate serial recall of an (unannounced) repeating list, was demonstrated in the immediate serial recall of visual materials, even when use of phonological short-term memory was blocked by concurrent articulation. The learning of a repeatedly presented letter list in one modality…