1,720,962 research outputs found
Manipulating cues in involuntary autobiographical memory: verbal cues are more effective than pictorial cues
Full text linkIn two experiments, pictorial cues were compared with their verbal labels to assess their effectiveness in eliciting involuntary autobiographical memories. Cues were relatively complex in Experiment 1 (e.g., relaxing on a beach) and simple objects in Experiment 2 (e.g., a ball). In both experiments, participants went through a vigilance task in which they were presented with frequent nontarget and rare target visual stimuli. Pictures or their corresponding verbal labels were also displayed on both target and nontarget stimuli, but participants were told that these were irrelevant to the task. They were asked to interrupt the vigilance task whenever they became aware of task-unrelated mental contents and to report them. In both experiments, more involuntary memories were elicited in the verbal cue condition, rather than in the pictorial cue condition. This result is discussed in relation to previous work that highlighted the greater effectiveness of verbal cues in memory tasks
Modifying the frequency and characteristics of involuntary autobiographical memories.
Full text linkRecent studies have shown that involuntary autobiographical memories (IAMs) can be elicited in the laboratory. Here we assessed whether the specific instructions given to participants can change the nature of the IAMs reported, in terms of both their frequency and their characteristics. People were either made or not made aware that the aim of the study was to examine IAMs. They reported mental contents either whenever they became aware of them or following a predetermined schedule. Both making people aware of the aim of the study and following a fixed schedule of interruptions increased significantly the number of IAMs reported. When aware of the aim of the study, participants reported more specific memories that had been retrieved and rehearsed more often in the past. These findings demonstrate that the number and characteristics of memories depend on the procedure used. Explanations of these effects and their implications for research on IAMs are discussed
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Involuntary retrieval from autobiographical memory and the nature of cues
Full text linkThe present thesis starts by exploring the possibility of eliciting involuntary autobiographical memories (ABMs) in the laboratory, as a preliminary step in studying the retrieval process of involuntary ABMs. The main aim of the thesis is to test whether involuntary AMBs (IAMs) can be successfully elicited in the lab, to assess whether cue manipulation changes the patterns of memories reported, and to compare IAMs and voluntary ABMs. We adopted the basic experimental paradigm recently developed by Schlagman & Kvavilashvili (2008) with a slight but important modification to it. A series of seven experiments were conducted and a total of 310 participants, participated in these experiments. Results of Experiments 1 indicate that instructing participants about involuntary memories increased significantly the number of involuntary memories reported. A clear increase in memories was obtained also when the interruptions were scheduled by the experimenter. These results indicate that the amount and type of involuntary memories depends strongly on the method used to elicit these memories. Three subsequent experiments (Exp, 2, 3, 4) have been devised to examine whether it is possible that by manipulating the cues in an experimental setting, different numbers of involuntary autobiographical memories are elicited, and memories have different qualities. The results of both experiments 2 and 3 confirm that pictorial cues are less effective in triggering IAMs than the verbal cues of the same items. In Experiment 4 we tested the possibility that concrete verbal material elicits more memories than abstract verbal material. The results of this study indicated that concrete verbal cues elicited more than twice as many IAMs than abstract verbal cues, showing that a clear concreteness effect was found when retrieval is involuntary. To explore the role of additional visual details and the distinctiveness of the items in a visual cue in triggering involuntary autobiographical memories, Experiment 5 was conducted. We found that the addition of visual details did not have a significant effect on the number of reported IAMs. In Experiment 6 we examined if adding a relatively specific detail to the cue would enhance the likelihood for that cue to trigger an involuntary memory. The results of this study showed that adding specific details to a cue tends to enhance the possibility to retrieve involuntary memories for personal events, although the results are not significant. To assess whether the effect of the concreteness/imageability of the cues observed in involuntary memory retrieval can be obtained in a parallel task in which autobiographical memories are obtained through voluntary retrieval we ran the last experiment (Exp 7) in the dissertation. The results of this experiment confirm the difference in effectiveness between concrete/high imagery and abstract/low imagery cues already found in Experiment 4. The results of Experiment 7 show that concrete cues are more effective in general, independently of the type of retrieval, whether involuntary or voluntary. Overall, these results indicate that involuntary memories can be elicited in a lab setting, that by manipulating the cues one manipulates also the number and characteristics of involuntary memories. In addition and unexpectedly, involuntary memories are about general and single events. This result is the opposite of what has been known from diary studies about IAMs, which have been reported as being more specific compared to voluntary memories. We offer a number of explanations of why IAMs are less specific than voluntary memories. However, being post-hoc explanations, work still needs to be done to assess them in a direct way
Involuntary retrieval from autobiographical memory and the nature of cues
Full text linkThe present thesis starts by exploring the possibility of eliciting involuntary autobiographical memories (ABMs) in the laboratory, as a preliminary step in studying the retrieval process of involuntary ABMs. The main aim of the thesis is to test whether involuntary AMBs (IAMs) can be successfully elicited in the lab, to assess whether cue manipulation changes the patterns of memories reported, and to compare IAMs and voluntary ABMs. We adopted the basic experimental paradigm recently developed by Schlagman & Kvavilashvili (2008) with a slight but important modification to it. A series of seven experiments were conducted and a total of 310 participants, participated in these experiments. Results of Experiments 1 indicate that instructing participants about involuntary memories increased significantly the number of involuntary memories reported. A clear increase in memories was obtained also when the interruptions were scheduled by the experimenter. These results indicate that the amount and type of involuntary memories depends strongly on the method used to elicit these memories. Three subsequent experiments (Exp, 2, 3, 4) have been devised to examine whether it is possible that by manipulating the cues in an experimental setting, different numbers of involuntary autobiographical memories are elicited, and memories have different qualities. The results of both experiments 2 and 3 confirm that pictorial cues are less effective in triggering IAMs than the verbal cues of the same items. In Experiment 4 we tested the possibility that concrete verbal material elicits more memories than abstract verbal material. The results of this study indicated that concrete verbal cues elicited more than twice as many IAMs than abstract verbal cues, showing that a clear concreteness effect was found when retrieval is involuntary. To explore the role of additional visual details and the distinctiveness of the items in a visual cue in triggering involuntary autobiographical memories, Experiment 5 was conducted. We found that the addition of visual details did not have a significant effect on the number of reported IAMs. In Experiment 6 we examined if adding a relatively specific detail to the cue would enhance the likelihood for that cue to trigger an involuntary memory. The results of this study showed that adding specific details to a cue tends to enhance the possibility to retrieve involuntary memories for personal events, although the results are not significant. To assess whether the effect of the concreteness/imageability of the cues observed in involuntary memory retrieval can be obtained in a parallel task in which autobiographical memories are obtained through voluntary retrieval we ran the last experiment (Exp 7) in the dissertation. The results of this experiment confirm the difference in effectiveness between concrete/high imagery and abstract/low imagery cues already found in Experiment 4. The results of Experiment 7 show that concrete cues are more effective in general, independently of the type of retrieval, whether involuntary or voluntary. Overall, these results indicate that involuntary memories can be elicited in a lab setting, that by manipulating the cues one manipulates also the number and characteristics of involuntary memories. In addition and unexpectedly, involuntary memories are about general and single events. This result is the opposite of what has been known from diary studies about IAMs, which have been reported as being more specific compared to voluntary memories. We offer a number of explanations of why IAMs are less specific than voluntary memories. However, being post-hoc explanations, work still needs to be done to assess them in a direct way
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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