Effects of Proactive Interference and Rehearsal on the Primary and Secondary Components of Short-Term Retention

1975 ◽  
Vol 27 (1) ◽  
pp. 47-62 ◽  
Author(s):  
M. T. Turvey ◽  
Robert A. Weeks

Under the conditions of the distractor paradigm, short-term retention declines to a minimum in a very brief period. The rapid forgetting can be said to reflect the declining contribution of the short-term store or primary memory and the asymptote can be taken as a measure of the contribution of the long-term store or secondary memory. It was shown that manipulating proactive effects by varying the recency of prior material affected only the primary memory component of the short-term retention function. On the other hand manipulating the difficulty of the subsidiary task performed during the retention period with proactive effects held constant affected both the primary and the secondary components. The results were discussed with respect to the relation between the two memory components and the idea that proactive effects are limited to long-term store.

1966 ◽  
Vol 18 (3) ◽  
pp. 266-269 ◽  
Author(s):  
R. Conrad ◽  
A. J. Hull

It has been proposed that a single set of operations based on classical interference theory is adequate to describe the phenomena of both short- and long-term memory. An article by Keppel and Underwood (1962) argues that short-term forgetting is due to proactive interference and, by implication, not a result of trace decay. An experiment which varied retention interval and the nature of the interpolated task, gave results which indicate that when the amount forgotten and the nature of errors are considered, a decay model is supported, the proactive interference suggestion being untenable.


1971 ◽  
Vol 23 (3) ◽  
pp. 275-283 ◽  
Author(s):  
A. D. Baddeley ◽  
Denise Scott

It has been claimed that the short-term forgetting shown by the Peterson technique is entirely due to proactive interference from prior experimental items. Two experiments investigated this by studying forgetting when prior items were avoided by testing subjects only once. Both experiments showed significant forgetting, although the degree of forgetting was less than with a multitrial procedure. On the basis of this and other results it is suggested that the Peterson technique comprises two components, a primary memory component which decays within 6 sec, and a more stable secondary memory component. Forgetting with the multitrial procedure is attributed principally to the need to use temporal retrieval cues to avoid confusion between successive items; longer retention intervals are associated with reduced temporal discriminability and hence poorer recall.


2018 ◽  
pp. 49-68 ◽  
Author(s):  
M. E. Mamonov

Our analysis documents that the existence of hidden “holes” in the capital of not yet failed banks - while creating intertemporal pressure on the actual level of capital - leads to changing of maturity of loans supplied rather than to contracting of their volume. Long-term loans decrease, whereas short-term loans rise - and, what is most remarkably, by approximately the same amounts. Standardly, the higher the maturity of loans the higher the credit risk and, thus, the more loan loss reserves (LLP) banks are forced to create, increasing the pressure on capital. Banks that already hide “holes” in the capital, but have not yet faced with license withdrawal, must possess strong incentives to shorten the maturity of supplied loans. On the one hand, it raises the turnovers of LLP and facilitates the flexibility of capital management; on the other hand, it allows increasing the speed of shifting of attracted deposits to loans to related parties in domestic or foreign jurisdictions. This enlarges the potential size of ex post revealed “hole” in the capital and, therefore, allows us to assume that not every loan might be viewed as a good for the economy: excessive short-term and insufficient long-term loans can produce the source for future losses.


1964 ◽  
Vol 29 ◽  
pp. 26-38 ◽  
Author(s):  
W. A. H. Godley ◽  
J. R. Shepherd

One of the main aims of short-term economic policy in Britain has been to regulate the pressure of demand for labour, and to keep the fluctuations of the unemployment percentage within fairly narrow limits. High unemployment is obviously undesirable; at the other end of the scale, if the pressure of demand for labour is too strong, this tends to lead to excessively high wage increases and to balance of payments difficulties. It is for the Government to decide at what pressure it wishes to run the economy, and to try to keep it there.


2019 ◽  
pp. 138-180
Author(s):  
Douglas Allen

Ever since 9/11 in the US and 26/11 in India, terrorism has been a central concern. Gandhi is generally assumed to be of little value when confronting terrorism today. At best, he is irrelevant; at worst, he is complicit and contributes to the crisis since he opposes necessary violent responses. This essay argues that while Gandhi does not have all of the answers for dealing with terrorism today, he provides us with a complex analysis essential for understanding and responding to the multidimensional structural crisis. After analyzing the nature and meaning of terrorism, we focus on the following topics: Gandhi’s interactions with terrorists; his means-ends analysis and his short-term and long-term preventative approaches to terrorism; his analysis of absolute truth and relative truth in approaching terrorism; and his general analysis of the status of “the other” in transforming our relations with violent, terrorizing, and terrorized others.


2022 ◽  
pp. 269-288
Author(s):  
Ayesha Kanwal ◽  
Zeeshan Ahmad Bhutta ◽  
Ambreen Ashar ◽  
Ashar Mahfooz ◽  
Rizwan Ahmed ◽  
...  

Human mortality due to drug-resistant infections is becoming more prevalent in our society. Antibiotics are impotent due to abuse and/or misuse, leading to new, more expensive, and more effective medicines and treatments. Therefore, it causes many short-term and long-term side effects in the patient. On the other hand, nanoparticles have exhibited antibacterial activity against various pathogens due to their small size and ability to destroy cells by various mechanisms. Unlike antibiotics for the treatment of patients' diseases and infections, nanomaterials provide an exciting way to limit the growth of microorganisms due to infections in humans. This has led to the development of a number of nanoparticles as active antibacterial agents. Therefore, the authors have carefully reviewed the recent developments in the use of nanomaterials for antibacterial applications and the mechanisms that make them an effective alternate antibacterial agent.


2020 ◽  
Vol 10 (10) ◽  
pp. 268
Author(s):  
Kaarina Sommarström ◽  
Elena Oikkonen ◽  
Timo Pihkala

Previous research into entrepreneurial learning has focused mainly on defining its aims; however, there seems to be little discussion on understanding the barriers or incentives involved when carrying out the pedagogical solutions that would enable entrepreneurial learning. In this study, we examine basic education level schools’ cooperation with outside partners, especially from the school principals’ and teachers’ viewpoints. The study aims to understand the perspectives of teachers and principals on planning and organizing school-company interaction. To do this, content analysis was used in this qualitative study. The data were collected via semi-structured interviews with school teachers and principals, involving a total of 35 people working in basic education. The findings of the study show that principals and teachers intentionally select long-term cooperation methods to meet the aims of entrepreneurial learning. On the other hand, teachers that have chosen to apply short-term school-company cooperation methods have highlighted the ease of these methods rather than learning. Finally, our findings suggest that planning and organizing entrepreneurial learning would benefit from school-level commitment where collaboration between teachers and between teachers and company representatives is valued. We believe that would lead to more satisfied teachers and longer-term school-company cooperation, and also believe that short-term school-company cooperation methods would better meet the aims of entrepreneurial learning.


Animals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 9 ◽  
Author(s):  
Paula Martinez-Ros ◽  
Alejandro Rios-Abellan ◽  
Antonio Gonzalez-Bulnes

The present study characterizes, for sheep, the occurrence and timing of the onset of estrus behavior and ovulation and the yields obtained (ovulation rate, progesterone secretion, and fertility) after Controlled Internal Drug Release (CIDR) insertion for five, six, seven, or fourteen days, with or without equine chorionic gonadotrophin (eCG) in ewes of the Segureña meat breed. All the treatments showed above 80% of females displaying estrus, but the onset of estrus was earlier and more synchronized when using eCG and, among groups with eCG, onset of estrus was earlier in the sheep treated for 14 days than in the short-term treatments (p < 0.05 for all). Administration of eCG after either short- or long-term treatments assured the occurrence of fertile ovulations in all the animals. Conversely, ovulatory success without eCG was found to be dependent on treatment length, with a high percentage of animals ovulating after five days of treatment (83.3%) and very low percentages after treatment for six or seven days (40% and 20%, respectively). Ovulation rate and progesterone secretion were similar among animals ovulating, but ovulation failures predetermined the fertility yields obtained in response to the treatments. Hence, the best results were found after treatment for 14 days plus eCG, and for 5 days without eCG (83.3 for both, p < 0.05 when compared to the other groups with different treatment lengths and with or without eCG).


2011 ◽  
Vol 2011 ◽  
pp. 1-7
Author(s):  
Salim Surani ◽  
Raghu Reddy ◽  
Amy E. Houlihan ◽  
Brenda Parrish ◽  
Gina L. Evans-Hudnall ◽  
...  

Introduction. Cigarette smoking contributes to the deaths of more than 400,000 Americans annually. Each day >3,000 children and adolescents become regular smokers. This paper details a new antitobacco educational program titled “AntE Tobacco”Method. Children in grades 1–3 were administered a 10-item questionnaire to ascertain their baseline knowledge about the ill effects of smoking, shown an educational cartoon video depicting the ill effects of tobacco, and given a story book based on the video. At the end of video, children were administered a questionnaire to determine short-term recall of the antitobacco educational objectives of the program. Four to 6 weeks later, the children were then administered a follow-up survey to determine long-term retention of the anti tobacco educational program.Result. Eighty two percent of the children answered the outcome questions correctly immediately following the video. At follow-up, 4–6 weeks later, 83% of children answered all questions correctly.Conclusion. The anti tobacco education program used in this study effectively conveyed most of the educational objectives. The results of this study indicate that a multimedia (i.e., video and book) educational program can be used to educate and reinforce anti tobacco messages. This program may be very useful as a part of a comprehensive anti tobacco curriculum in school systems.


1985 ◽  
Vol 37 (2b) ◽  
pp. 101-119
Author(s):  
Ruth M. Colwill

Pigeons were trained on a delayed conditional discrimination in which the choice between two simultaneously presented stimuli depended on how the trial started. Choice of one of the stimuli was reinforced if the trial had been initiated by presentation of a food sample and choice of the other was reinforced if no sample had been presented. Subsequently, test trials were administered on which an associatively significant stimulus was presented during the retention interval. This manipulation was intended to modulate the short-term retention of information about the food sample. It was found that performance on food sample test trials was enhanced by presentation of an excitor for food, disrupted by presentation of an inhibitor for food and unaffected by presentation of an associatively neutral stimulus. The impact of these posttrial stimuli was also assessed on the ability of the food sample to serve as a reinforcer. This was done by recording the development of responding to a keylight that signalled the food sample on these test trials. Compared to the associatively neutral stimulus, both the excitor and the inhibitor interfered with the development of keypecking. These results are discussed with regard to the issue of how posttrial events modulate associative learning.


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