The Retrieval Hypothesis as an Explanation of Induced Retrograde Amnesia

1976 ◽  
Vol 28 (4) ◽  
pp. 623-632 ◽  
Author(s):  
Douglas K. Detterman
Keyword(s):  
Free Recall ◽  
Retrograde Amnesia ◽  
Recall Performance ◽  
Anterograde Amnesia ◽  
Recall Task ◽  
Cued Recall ◽  
Recall Period ◽  
Auditory Presentation ◽  
Free Recall Task ◽  
Retrieval Failure

The present experiment tested the hypothesis that retrograde induced amnesia is due to retrieval failure and anterograde induced amnesia to encoding failure by providing recall cues which were expected to eliminate retrograde amnesia but worsen or have no effect on anterograde amnesia. The 80 subjects received auditory presentation of 10 lists, each composed of 15 four-letter words presented at a rate of 2s/item at 75 dB in a free-recall task, followed by a 72 s recall period. The amnesia-producing event was an outstanding item in serial position 8 presented at 115 dB (about the intensity of a loud shout) on half the lists. During the first half of the recall period subjects free-recalled, but during the last half they were given a list of the first (single cue) or the first two (double cue) letters of each word, to be used as aids to recall. To demonstrate induced amnesia, lists containing a loud item were compared to those not containing one. First half free recall performance indicated that large retrograde and anterograde effects were present for both cue conditions. Second half cued recall performance indicated that in the double cue condition retrograde amnesia disappeared and anterograde amnesia became larger. Cueing had much smaller effects in the single cue condition.

“Experimental Amnesia” Induced by Emotional Items

1994 ◽  
Vol 78 (1) ◽  
pp. 19-28 ◽  
Author(s):  
R. Angelini ◽  
F. Capozzoli ◽  
P. Lepore ◽  
D. Grossi ◽  
A. Orsini
Keyword(s):  
Free Recall ◽  
Retrograde Amnesia ◽  
Premature Termination ◽  
Recall Task ◽  
Free Recall Task ◽  
Experimental Conditions ◽  
Amnesic Effect ◽  
Recency Effects ◽  
Word Lists ◽  
Functional Mechanisms

Tulving described an effect of retrograde amnesia in a free-recall task of word lists, produced by inserting items having priority in recall. Other authors confirmed the amnesic effect without giving instructions for priority both in recall and in recognition tasks. The effect was explained by Tulving as a premature termination of encoding processes. The similarity between these experiments and the researches aimed at reproducing amnesia by emotional trauma led us to hypothesize that the two phenomena might be due to the same functional mechanisms. We have organized a free-recall task of word lists into which emotional items were inserted. Our aim was to verify whether with these experimental conditions Tulving's results would be reproduced. The obtained data show amnesic effects in free recall; nevertheless, they do not seem to confirm closely the experimental hypothesis. Lastly, changes in primacy and recency effects produced by emotional items are analyzed.

scholarly journals Recall of Reverberant Speech in Quiet and Four-Talker Babble Noise

2021 ◽  
Vol 11 (7) ◽  
pp. 891
Author(s):  
Miseung Koo ◽  
Jihui Jeon ◽  
Hwayoung Moon ◽  
Myung-Whan Suh ◽  
Jun-Ho Lee ◽  
...  
Keyword(s):  
Free Recall ◽  
Speech Intelligibility ◽  
Signal To Noise Ratio ◽  
Recall Performance ◽  
Memory Performance ◽  
Pupil Dilation ◽  
Recall Task ◽  
Free Recall Task ◽  
Pupillary Responses ◽  
Target Words

Using behavioral evaluation of free recall performance, we investigated whether reverberation and/or noise affected memory performance in normal-hearing adults. Thirty-four participants performed a free-recall task in which they were instructed to repeat the initial word after each sentence and to remember the target words after each list of seven sentences, in a 2 (reverberation) × 2 (noise) factorial design. Pupil dilation responses (baseline and peak pupil dilation) were also recorded sentence-by-sentence while the participants were trying to remember the target words. In noise, speech was presented at an easily audible level using an individualized signal-to-noise ratio (95% speech intelligibility). As expected, recall performance was significantly lower in the noisy environment than in the quiet condition. Regardless of noise interference or reverberation, sentence- baseline values gradually increased with an increase in the number of words to be remembered for a subsequent free-recall task. Long reverberation time had no significant effect on memory retrieval of verbal stimuli or pupillary responses during encoding.

Articulatory Rehearsal Is More Than Refreshing Memory Traces

2013 ◽  
Vol 60 (2) ◽  
pp. 131-139 ◽  
Author(s):  
Ryoji Nishiyama ◽  
Jun Ukita
Keyword(s):  
Free Recall ◽  
Recall Performance ◽  
Verbal Working Memory ◽  
Verbal Information ◽  
Free Recall Task ◽  
Study Item ◽  
Phonological Representations ◽  
Memory Traces ◽  
Short Period ◽  
Serial Position Curves

This study examined whether additional articulatory rehearsal induced temporary durability of phonological representations, using a 10-s delayed nonword free recall task. Three experiments demonstrated that cumulative rehearsal between the offset of the last study item and the start of the filled delay (Experiments 1 and 3) and a fixed rehearsal of the immediate item during the subsequent interstimulus interval (Experiments 2 and 3) improved free recall performance. These results suggest that an additional rehearsal helps to stabilize phonological representations for a short period. Furthermore, the analyses of serial position curves suggested that the frequency of the articulation affected the durability of the phonological representation. The significance of these findings as clues of the mechanism maintaining verbal information (i.e., verbal working memory) is discussed.

Acquisition and Clustering in Multiple-Trial Free Recall as a Function of Meaningfulness of Dissyllables

1973 ◽  
Vol 33 (1) ◽  
pp. 27-30
Author(s):  
Marianne W. Segal ◽  
Gayle A. Olson
Keyword(s):  
Free Recall ◽  
Recall Task ◽  
Free Recall Task ◽  
Superior Recall ◽  
Associative Relatedness

Lists of 10 dissyllables varying in meaningfulness were presented to subjects in a multiple-trial free recall task. Measures of recall and clustering showed superior recall and greater amounts of clustering for the high-meaningful list than for the low-meaningful list. Differential item integration and associative relatedness were mechanisms employed to explain the differences.

scholarly journals Incidental information processing and verbal intelligence

2017 ◽  
Vol 10 (2) ◽  
pp. 5-19
Author(s):  
E.V. Gavrilova ◽  
S.S. Belova
Keyword(s):  
Information Processing ◽  
Free Recall ◽  
Recall Task ◽  
Cognitive Tasks ◽  
Processing Conditions ◽  
Verbal Information ◽  
Verbal Intelligence ◽  
Free Recall Task ◽  
Creative Task ◽  
Verbal Tasks

This article aims to reveal interaction between verbal intelligence and efficiency of intentional and incidental verbal information processing. Participants were exposed to pairs of words about which they have to decide whether a city name was presented in each pair. Thus, semantics of words was processed intentionally, whereas their phonemic features (rhymed vs. unrhymed pairs) were processed incidentally. The efficiency of stimuli processing was estimated in two different cognitive tasks – word free-recall task and word usage in new creative task. It was found that verbal intelligence was positively correlated with number of recalled stimuli which were congruent to both intentional and incidental processing conditions. Moreover, verbal intelligence was positively correlated with usage of incongruent stimuli which were processed incidentally in creative task. The results are discussed in terms of contemporary frameworks of information processing in verbal tasks.

scholarly journals It matters how to recall – task differences in retrieval practice

2020 ◽  
Vol 48 (6) ◽  
pp. 699-728
Author(s):  
Tino Endres ◽  
Lena Kranzdorf ◽  
Vivien Schneider ◽  
Alexander Renkl
Keyword(s):  
Free Recall ◽  
Retrieval Practice ◽  
Situational Interest ◽  
Recall Task ◽  
Expository Texts ◽  
Free Recall Task ◽  
Short Answer ◽  
Task Differences ◽  
Calibration Free ◽  
Metacognitive Calibration

AbstractThe type of a recall task may substantially influence the effects of learning by retrieval practice. In a within-subject design, 54 university students studied two expository texts, followed by retrieval practice with either short-answer tasks (targeted retrieval) or a free-recall task (holistic retrieval). Concerning the direct effects of retrieval practice, short-answer tasks led to increased retention of directly retrieved targeted information from the learning contents, whereas free-recall tasks led to better retention of further information from the learning contents. Concerning indirect effects, short-answer tasks improved metacognitive calibration; free-recall tasks increased self-efficacy and situational interest. These findings confirm the assumption that the effects of retrieval practice depend on the type of recall task: short-answer tasks help us remember targeted information units and foster metacognitive calibration. Free-recall tasks help us remember a broader spectrum of information, and they foster motivational factors.

Investigating predictors of trauma induced data-driven processing and its impact on attention bias and free recall

2020 ◽  
Vol 48 (6) ◽  
pp. 646-657 ◽  
Author(s):  
John-Paul Corrigan ◽  
Donncha Hanna ◽  
Kevin F.W. Dyer
Keyword(s):  
Free Recall ◽  
Attention Bias ◽  
Recall Task ◽  
Data Driven ◽  
Cognitive Mechanisms ◽  
Post Traumatic Stress ◽  
Free Recall Task ◽  
Cognitive Changes ◽  
Memory Integration ◽  
Analogue Trauma

AbstractBackground:Whilst data-driven processing (DDP) during trauma has been shown to play a role in poor memory integration and is associated with post-traumatic stress disorder (PTSD) re-experiencing symptoms, the pre-trauma risk factors and related cognitive mechanisms are uncertain.Aims:This experimental study aimed to investigate predictors of peri-traumatic DDP, as well as its role in attention bias to threat and free recall.Method:A virtual reality video was used to simulate an analogue trauma. Questionnaires, a free recall task, and an eye-tracking measure assessed cognitive changes after exposure.Results:Regression analysis demonstrated that trait dissociation at pre-exposure to trauma significantly predicted DDP. Attention bias towards threat-related images was found. Results showed that DDP and poorer free recall predicted attention bias to threat images and higher levels of DDP actually predicted higher overall scores in the free recall task.Conclusions:This study showed that DDP is strongly linked to dissociative traits, and along with memory disintegration it may predict attention changes after exposure to a trauma.

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