Imagery and paired-associate learning.

In Exp. I with 20 undergraduates, the rate of paired-associate learning varied with the type of stimulus, from fastest to slowest: pictures (P), object names (ON), and category names (CN). The stimulus materials did not differ in meaningfulness, and ON had shorter imaginal latencies than CN. The ON-CN difference was replicated in Exp. II with 15 Ss, but presentation of the appropriate P together with an ON or CN on the 1st study trial did not facilitate acquisition of either list. Exp. III with 20 Ss involved the short-term retention of pairs. Using a measure of conditional recall (of responses, given stimulus recall), forgetting occurred over 18 sec., primarily in the 1st 3 sec., but was unaffected by the type of stimulus. The data led to a reevaluation of the conceptual peg hypothesis. (French summary) (17 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Incidental learning, noun imagery-concreteness and direction of associations in paired-associate learning.

Examined the effect of imagery-concreteness pairs in incidental learning. In Exp. I with 96 undergraduates, intentional learning was superior to incidental learning. Recall of concrete-concrete noun pairs was significantly better than recall of all other pairs, while concrete-abstract and abstract-concrete nouns did not differ from each other but did differ from abstract-abstract recall. In Exp. II with 64 Ss, instructions to use imagery during the orientation task resulted in similar performance for incidental and intentional learning Ss. Concreteness yielded a greater effect on the stimulus side than on the response side of pairs, particularly for stimulus-response recall. Associative directionality had no reliable effects in either experiment. Results are discussed in terms of A. Paivio's conceptual peg hypothesis and 2-process theory of verbal and imaginal memory. (French summary) (17 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive sets, attribution, and social interaction.

Examined relationships among cognitive set variables, attribution, and behavior using 135 female undergraduates. Ss were given either positive-, negative-, or no-set information about the emotional health of a stimulus person prior to observing a videotaped social encounter. After viewing the tape, Ss were administered a free-response attribution measure or a distraction task. All Ss then engaged in actual social interaction with the stimulus person. Results indicate that (a) Ss receiving positive-set information wrote more positively valenced attributions and displayed more positive behavioral responses than did Ss receiving negative- and no-set information. (b) Ss who made attributions exhibited more pronounced behavioral responses as a function of the set manipulation than did those who did not make attributions. It is argued that the latter data reveal the important role of attribution in mediating the effects of set on behavior. Overall data are discussed as reflecting a control motivation in the production of attribution and behavior. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Misleading postevent information and recall of the original event: Further evidence against the memory impairment hypothesis.

Evaluated the hypothesis that misleading postevent information impairs memory for the original event using 174 undergraduates in Exp I and 228 Ss in Exp II. Ss were assigned either to a recall test condition or an original recognition test condition. Ss viewed a sequence of slides depicting an event, read a postevent narrative that presented neutral or misleading information about critical details, and were tested on their ability to recall the critical details. No difference in recall performance between misled and control conditions was found. These results, in conjunction with the finding of M. McCloskey and M. Zaragoza (see record 1986-03053-001) that misleading information did not affect Ss' ability to recognize original information, argue strongly against the memory impairment hypothesis. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Topic structure representation and text recall.

Tested the hypothesis that readers represent a text's topics and their interrelations as they read and then use those representations to access information about each topic. In 2 experiments, 222 undergraduates were required to read and free recall an expository text of approximately 1,100 words in length. Exp I manipulated both the order of topics in the stimulus text and whether the introductory paragraph stated the topics and their organization. It was found that Ss recalled information about fewer topics if the topics were randomly ordered and the introductory paragraph was uninformative than if topics were logically ordered or if the introductory paragraph was informative. Differences in recall of topics accounted for much of the variance in overall recall and recall errors. Exp II examined the effects of the presence or absence of topic sentences and of variations in the physical marking of paragraph boundaries. Findings show that Ss recalled information about more topics if the text contained topic sentences than if it did not. Results are consistent with the hypothesis that readers use a representation of a text's topic structure to guide recall. (40 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Impact of group consensus and social support on stimulus meaning: Mediation of conformity by cognitive restructuring.

Three experiments with a total of 163 undergraduates tested the hypothesis that a person reinterprets the meaning of the stimulus object when facing unpopular responses from a unanimous group and that this change in meaning leads to a shift in response toward the group's position. In Exp I, several opinion items were presented, and either Ss observed unpopular responses, supposedly made earlier by a unanimous group (UG) or by a group having 1 dissenter (social support), or they observed no response at all (control). Ss merely gave their interpretation of the meaning of a key word or phrase in each opinion statement—they did not give their own opinions. Results show that UG Ss gave more uncommon meanings to the stimuli than did Ss in the other 2 conditions. Exp II ruled out the possibility that the shift in meaning was due to Ss' adhering to the interpretation they assumed to be held by the majority. In Exp III, Ss were exposed to scores representing the meanings that were produced by the unanimous group and control conditions in Exp I. Results show that after observing the consensually produced meanings for these items, the Ss shifted their own opinions toward the position held by the UG in Exp I. (13 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Contamination of facial memory through exposure to misleading composite pictures.

In Exp I, 46 male and 51 female undergraduates witnessed a filmed incident and later described the target. Results show that Ss who observed a composite containing misleading information (either incorrect hair or an added moustache) were significantly more likely to misreport hairstyle and the presence of a moustache than those who did not. In Exp II, 210 17–65 yr old Ss observed a filmed incident and were tested for their recall and recognition of the target either immediately or after delays of 2 or 7 days. Significant bias, consistent with the content of the misleading composite, was present for both cued recall and choice of mug shot in a photo spread. The effect did not increase over delay but was greater when the composite was seen just prior to recall than immediately after the incident. Implications concerning interference with the memory of the witness who produced the composite and for other witnesses exposed to the misleading composite are discussed. (33 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Disorganized recall during suggested amnesia: Fact not artifact.

In 3 experiments and a reanalysis of previous data, hypnotic and nonhypnotic Ss learned a 9-item categorized word list and were then given an amnesia suggestion for the list. Clustering of recall was measured on the recall trials immediately before the suggestion, during it, and after it was cancelled. In Exp I with 173 undergraduates, hypnotic Ss showed more amnesia than task-motivated Ss. However, partial nonrecallers in both of these treatments showed disorganized (i.e., less clustered) recall during the suggestion as compared to before it or after cancelling it. Exp II, with 100 university students, disconfirmed the hypothesis that the greater amnesia of hypnotic as compared to task-motivated Ss, was due to high levels of relaxation in the hypnotic Ss. Disorganization was again found in partial nonrecallers. The reanalysis of clustering data from previous experiments with 196 Ss demonstrated that the disorganization effect was not an artifact produced by reduced recall during the suggestion period, and Exp III (with 166 18–42 yr old Ss) indicated that Ss who followed instructions and faked partial amnesia when explicitly asked to do so (simulators) showed no disorganization effect. An inattention–encoding specificity hypothesis was developed to account for these findings. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recall of associates generated to emotionally toned stimulus words.

Suggests that an explanation for differential recall can be found without recourse to an arousal model. Four experiments were conducted with 200 college students. Exp 1 replicated the findings of E. B. Jones et al (1987) that Ss show poor recall of associates to emotional words. Exp 2 showed that reducing the number of emotionally toned stimulus words in the word list resulted in an improvement in recall for associates generated to these words. In Exp 3, recall for associates generated to emotionally toned stimulus words was poorer if the stimulus words were similar in meaning than if they were dissimilar. Exp 4 found that stimulus word properties other than emotionality could be manipulated to demonstrate a differential recall. Results are explained in terms of the inability of the retrieval system to discriminate among competing sets of responses that are semantically and emotionally congruent. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reorganization and the recall of prose.

The hypothesis that reorganizing written material while taking notes would aid free recall was evaluated in 2 experiments with high school juniors. 82 Ss read a passage on anthropology organized either by society or by topic. They were then instructed to take notes either (a) in the same order as the material was presented or (b) by reorganizing the information according to specified categories. Free recall was higher for Ss who reorganized the material. In Exp II, with 146 Ss, the effect persisted when the categories were given to Ss in all conditions. Ss of average verbal aptitude benefited from reorganizing to a greater extent than did Ss of higher verbal aptitude. Results are discussed in terms of the encoding variability hypothesis. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Putting the keyword method in context.

Compared the keyword method of learning new vocabulary with a context method in which the meaning of the new vocabulary items had to be inferred from a meaningful context. In Exp I, with 69 undergraduates, the keyword method produced greater definition recall than the context method, even when such recall was conditionalized on context Ss' correct discovery of the word's meaning. Combining the keyword method with the context method significantly improved recall over that of context alone but produced recall below that displayed by the keyword method alone. For Ss high in verbal ability, as assessed by the Scholastic Aptitude Test, the keyword method did not promote significantly better recall than a no-strategy control condition. In Exp II, with 42 Ss, the keyword and context methods were evaluated in terms of how adequately the vocabulary could be used in sentences. Both methods led to highly adequate use of vocabulary in sentences, given that the word's meaning could be recalled. As in Exp I, the keyword method produced significantly greater definition recall than the context method. Implications for vocabulary learning theories and discovery learning approaches are discussed. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conservation level and category clustering.

Conducted 2 experiments with 180 elementary and junior high school students to test the hypothesis that category recall is related to the quantity conservation of mass, weight, and volume. The predicted association between conservation level and category recall was observed. In Exp I conservation level was varied with word lists. Main effects of both these variables on recall and category clustering scores appeared. Systematic developmental trends in clustering for the high- but not for the low-associative word list were revealed in post hoc analyses. In Exp II, the Ss' organizational bases were studied under a procedure in which the Ss were allowed first to study a stimulus word and then to select a syntagmatic, a paradigmatic, a category inclusive, or an unrelated response word as a mediator to help them remember the stimulus word. Analyses performed on response selections and response selections in relation to recall revealed that Ss who conserved volume showed the highest tendency to select category inclusive responses. It is suggested that more mature Ss are more likely both to select and use superordinate information as an encoding device. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mind over matter: Perceived success at psychokinesis.

Four experiments with 212 undergraduates showed that Ss' estimates of success on a psychokinetic (PK) task were independent of actual performance. In Exp I, Ss given a positive introductory set or no set about PK evidenced more illusory control than Ss given a negative set. In Exp II, both degree of general belief in psychic phenomena and the number of practice trials that Ss received influenced performance estimates, with high believers who received 10 practice trials providing the highest estimates and low believers who received 1 practice trial the lowest. In Exp III, Ss actively involved with the PK task judged their performance more positively than passively involved Ss. Exp IV showed that when they were actively involved in the task, Ss with an internal locus of control (Rotter's Internal–External Locus of Control Scale) gave higher estimates of their success than Ss with an external locus of control. When passively involved, internals and externals did not reliably differ in their estimates, but their estimates were lower in those of active/internals. Results support E. J. Langer's illusion-of-control theory and highlight the importance of general psychic belief and locus-of-control orientation in affecting perceived success at a psychic task. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Latent inhibition experiments with goldfish (Carassius auratus).

Examined evidence of latent inhibition in a series of experiments with goldfish. In Exp I, 12 Ss were given nonreinforced preexposure to a color that subsequently predicted shock in an activity conditioning situation; their performance did not differ from that of 12 control Ss preexposed to a markedly different color. In Exp II, 12 Ss given nonreinforced preexposure to a tone and an unstimulated control group of 12 Ss were trained in an appetitive situation, with the tone serving either as a conditioned excitor or as a conditioned inhibitor. Preexposure had significant effect in the conditioned excitation training, but it reduced the level of responding both to the positive stimulus and to the negative compound in the conditioned inhibition training. In Exps III and IV, classical aversive conditioning was studied in the shuttle box. In Exp III, excitatory conditioning to a color was found to be impaired (relative to the performance of nonpreexposed control Ss) as much by nonreinforced preexposure to the training color as by nonreinforced preexposure to a markedly different color; substantial variation in amount of preexposure was without significant effect. In the conditioned inhibition training of Exp IV, 12 Ss with nonreinforced preexposure responded less than did 12 unstimulated control Ss, both to the positive stimulus and to the negative compound. Results demonstrate that the effect of preexposure on goldfish is their reduction of general responsiveness or level of arousal. (47 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Copying and reproducing pictures in relation to subjects' operative levels.

Past Piagetian memory research has established that Ss' operative levels influence their recall of operatively derived stimuli. To determine the locus of operative influence, children from Grades 1–5 with immature, transitional, or mature concepts of verticality were asked to copy and/or to reproduce verticality stimuli. Stimuli were either operatively advanced (a vertical tree on a hillside) or primitive (a tipped tree). Memory was tested immediately (Exp I, 96 Ss), 1 wk (Exp II, 168 Ss), or 5 mo (Exp III, 46 Ss) after the initial viewing. In each study there was a significant relationship between operative level and performance on the operatively advanced stimulus only. For the tipped stimulus, more distortion was evident in memory than in copy drawings. Contrary to predictions, however, there was no difference between distortion in copy and memory drawings for the straight stimulus regardless of Ss' operative levels. Results suggest that progressive distortion increases over time but that regressive distortion occurs before the stimulus is removed from sight. (8 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Olfactory discrimination, reversal learning, and stimulus control in rats.

Conducted 3 experiments with a total of 21 Wistar rats. In Exp I Ss were trained to discriminate lights, tones, or odors and then given a series of discrimination reversals. Only Ss trained with odors showed positive transfer on the first reversal and acquisition of a reversal set. Other experiments demonstrated that (a) Ss preferentially attended to odors when presented in compound with lights or tones; (b) odors exerted more discriminative control than tones in tests using compound stimuli of competing sign; and (c) after pretraining on the positive stimulus, acquisition of an odor but not a light discrimination occurred with virtually no errors. These results demonstrate the importance of stimulus modality in the establishment of stimulus control and the need for more careful analysis of stimulus factors in cross-species comparisons of learning ability. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The remembering of auditory event durations.

Three experiments examined the incidental remembering of event durations. In each study, Ss engaged in an initial learning phase in which they performed a set of perceptual ratings on events for a varying number of trials. These events consisted of tonal sequences or ecological sounds that varied in their internal structure and ending. Ss were then given a surprise memory task in which they were asked to recognize the duration of each event (Exps 1 and 3) or extrapolate its completion (Exp 2). Results showed that in contrast to irregularly timed events, those filled with regularly timed or continuous pitch information yielded high levels of accuracy that increased with greater learning experience. In addition, durations marked by a nonarbitrary ending were more accurately remembered than those marked by an arbitrary ending which, in fact, were misremembered as shorter than their actual duration. These findings are discussed in terms of an approach that emphasizes the role of event structure on perceiving and remembering activities. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Note-taking, individual differences, and memory for lecture information.

Investigated the encoding function of note taking and processing differences between successful and less successful students in lecture situations in 2 experiments. In Exp I, 48 undergraduates either took notes or listened during a lecture. Different memory patterns were found for these 2 groups, with note-takers recalling many more high- than low-importance propositions and listeners recalling an equal number of high- and low-importance propositions. Results suggest that note taking enhanced organizational processing of lecture information. In Exp II, the notes and recall of 80 successful and less successful students were compared. Successful Ss recalled more of the most important propositions, but these 2 groups of Ss did not differ in their recall of less important propositions. For both groups of Ss, recall content was closely related to the content of the notes, with successful Ss recording more high-importance propositions in their notes. Also, successful and less successful Ss were similar in their note-taking styles and the degree to which they benefited from reviewing their notes. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)