汉语双字词超音段信息在语义激活中的作用

采用眼动方法,通过两个实验考察了汉语双字词超音段信息在语义激活中的作用。结果显示：（1）汉语双字词语义激活过程中,分别改变首字声调和尾字声调对语义激活起到抑制作用,首字声调改变时的抑制作用更大。结果支持了Cohort模型。（2）语义相关词的注视点和注视时间远远多于其控制词,但没有发现词频效应。（3）汉语声调的加工过程与声韵母一样,独立作用于语义激活过程。     

Testifying on Eyewitness Reliability: Expert Advice Is Not Always Persuasive1

This study investigates the impact of different types of expert testimony regarding the unreliability of eyewitness identification. In two hypothetical court cases involving eyewitnesses, expert testimony was presented that was either sample-based (presenting the results of a research program on eyewitness identification) or person-based (presenting information about the particular eyewitness under consideration); the expert either offered causal explanations for his unreliability claim or failed to do so. Two additional control groups (with and without eye-witness identification) were not presented with any expert testimony. The results indicate that subjects who had been confronted with an expert statement made more lenient judgments about the offender but did not discount the eyewitness identification completely. Sample-based information had a moderate impact on the subjects' judgments, regardless of whether or not causal explanations were given. Person-based testimony was the most influential type of expert advice when a causal explanation was provided but the least influential one when no reasons were given. The practical (international differences in admissibility of expert testimony) and theoretical implications (processing of base-rate information) of these findings are discussed.     

Role of environmental context in eyewitness memory

We investigated whether varying the environmental context will affect the magnitude of retroactive interference produced by misleading postevent information in an eyewitness memory paradigm. Previous eyewitness memory studies have typically presented the original and misleading information in the same environmental context. In this experiment, the physical contexts in which the original information and the misleading information were presented were varied, a procedure that is more analogous to what usually occurs in real world situations. We tested 288 subjects, half using the original and misleading information in the same encoding context and half using a different context for presenting the two types of information. Memory for the original event was assessed using either the standard recognition test procedure or the modified test developed by McCloskey and Zaragoza (1985). Measures of both recognition accuracy and response latency showed no difference in performance attributable to varying the environmental context. The present data replicate the findings of previous single-context experiments that showed the two recognition test procedures to produce different patterns of results. Thus, environmental context seems to play little role in determining the magnitude of the misleading postevent information effect.     

Individual and developmental differences in eyewitness recall and suggestibility in children with intellectual disabilities

This study examined two key issues: (1) whether there were developmental improvements in eyewitness memory performance for children with intellectual disabilities (ID); and (2) whether standardised measures of cognitive ability and suggestibility would relate to eyewitness recall and suggestibility. Children with ID and age‐matched controls (ages 8/9 and 12 years) watched a video of a crime and were asked a range of open‐ended and specific questions about the event in a subsequent interview. Free recall increased between the two age levels for children with and without ID, but at a faster rate for those without ID. For other question types, differences in performance between children with and without ID were far more marked than age differences. Standardised measures of interrogative suggestibility (Gudjonsson Suggestibility Scale, GSS), verbal IQ, non‐verbal IQ, mental age and speed of information processing were related to eyewitness performance. In particular, higher eyewitness recall scores (free recall, non‐leading specific questions) were related to higher scores on the standardised GSS free recall measure; and higher eyewitness suggestibility scores were related to higher scores on the standardised GSS suggestibility measures. Mental age was a better predictor of performance on a range of eyewitness memory question types than verbal or non‐verbal IQ; and speed of information processing showed some relationships with eyewitness performance. Copyright © 2006 John Wiley & Sons, Ltd.     

Repetition and Reconfiguration: Demand‐Based Confabulation in Initial Eyewitness Memory

Repeated recall, as a result of repeated questioning, is typical of situations involving eyewitness evidence. The present study addressed questions of eyewitness performance with reference to repeated questioning in an initial interview, in a format based on actual police procedures. This experiment focused on eyewitness accuracy, eyewitness confidence, and the addition of false details to eyewitness accounts. Ninety‐two adult respondents were asked to recall all the information they could from a single viewing of a scene depicting an assailant aiming a handgun at a victim. This initial question was followed by three additional questions, in which respondents were asked to report any additional details they could recall. On average, respondents provided several times as many correct as false details to the initial question. However, performance deteriorated significantly to the three subsequent questions; on average, across the three subsequent questions, witnesses recalled nearly as much false as accurate information. Witness confidence was positively related to amount of accurate information recalled. However, confidence was also positively related to the number of instances of erroneous recall. These results indicate that reconfigurative dynamics begin to operate, producing confabulated responses in response to questioning demands, as early as the initial interview. This work may also help to clarify the critical relationship between accuracy and confidence in eyewitness reportage, at least within the framework reflected by the present research. Copyright © 2012 John Wiley & Sons, Ltd.     

Phonological coding in reading comprehension: The importance of individual differences

Abstract

In two experiments, texts were presented word by word at a fixed pace to subjects high or low in test anxiety, under various concurrent interference conditions: no interference, articulatory suppression, finger tapping, unattended meaningful speech, reversed (meaningless) speech and nonword (meaningless) speech. High-anxiety subjects produced overt articulation more frequently than low-anxiety subjects, especially in the speech conditions. There was an interaction between anxiety and interference on comprehension performance: Conditions thought to interfere with phonological coding (i.e. articulatory suppression and nonword speech) were detrimental to comprehension for high but not for low-anxiety subjects; in contrast, there were no differences in comprehension performance as a function of anxiety under conditions causing no (proper) phonological interference (i.e. no interference, finger tapping and reversed speech). There were mixed results in the meaningful speech condition, partly attributable to its semantic interference component. These findings reveal that the use and importance of phonological coding in reading comprehension vary with differences in test anxiety-high-anxiety subjects are vulnerable to disruptive effects on phonological coding. This suggests that high-anxiety individuals are especially likely to resort to speech-based coding during reading, and that phonological coding has a compensatory role for them.     

A Lay Perspective on the Accuracy of Eyewitness Testimony1

To understand more about what laypeople think they “know” about eyewitness testimony, 276 jury-eligible university students were asked to indicate what factors they believe affect the accuracy of eyewitness testimony. In contrast to the large proportion of eyewitness-memory research that concerns system variables, the lay respondents overwhelmingly generated factors related to estimator variables, while system-variable factors such as police questioning and identification procedures were rarely mentioned. Respondents also reported that their own common sense and everyday life experiences were their most important sources of information about the accuracy of eyewitness testimony. Not only do these results clarify the need for further research on the lay perspective of eyewitness testimony, but they also provide some insight into the way in which many jurors might approach cases involving eyewitness evidence.     

Juror Underutilization of Eyewitness Nonidentifications: A Test of the Disconfirmed Expectancy Explanation1

The impact of two types of eyewitness testimony on mock jurors' judgments was explored. A crime eyewitness either testified that the defendant definitely was the robber (identification), definitely was not the robber (nonidentification), or that they weren't sure if he was or was not the robber (control). An alibi eyewitness testified that the defendant either definitely was at the alibi location (identification), definitely was not at the alibi location (nonidentification), or he wasn't sure if the defendant was or was not at the alibi location (control). Strength of case was also manipulated. Results show that crime eyewitness identifications and alibi eyewitness nonidentifications were underutilized. A crime eyewitness by alibi eyewitness interaction revealed that within the crime eyewitness identification condition alibi identification was underutilized whereas with the other two crime eyewitness conditions, alibi nonidentification information was underutilized. The results supported a disconfirmed expectancy explanation.     

预测性对快速读者和慢速读者词汇加工的影响

本研究借助眼动仪通过两个实验考察了熟练阅读中快速读者与慢速读者对语境预测性的利用是否有差异。实验1比较快速组与慢速组在中央凹加工高、低预测词的差异。实验2对比两组读者利用副中央凹预视(相同、相似假字、低预测词和不相似假字)加工高预测词的差异。实验1结果显示两组读者有相似的预测性效应：对高预测词的注视时间比低预测词更短。实验2结果显示两组读者的预视效应存在差异：慢速组在相同预视下对目标词的跳读率高于低预测预视,而快速组在这两种预视下的跳读率差异不明显但高于慢速组;慢速组在低预测和不相似预视下注视目标词的时间分别长于相同预视,而快速组的这两种效应较小。结果表明,两组读者利用预测性的差异表现在副中央凹加工阶段,即慢速读者比快速读者利用相似预视激活预测性信息的效率更低,且在低预测或无效预视下对词汇的识别和语义整合更困难,这说明慢速读者在词汇加工中更依赖语境且对无关信息的抑制更弱。这些结果支持词汇质量假说。     

What U.S. law enforcement officers know and believe about eyewitness factors,eyewitness interviews and identification procedures

We surveyed 532 U.S. law enforcement officers about eyewitness factors, and how they conduct eyewitness interviews and identification procedures. There were 83 officers from departments that had implemented eyewitness reforms, and 449 officers from departments that had not implemented reforms. Officers from both samples had limited knowledge of eyewitness factors. They also reported conducting interviews and identification procedures in a manner that violated many provisions of the National Institute of Justice's Guide and Training Manual. Although officers in reform departments reported following more correct lineup procedures than officers in non‐reform departments, the two groups did not differ in knowledge of eyewitness factors or in their use of proper interviewing procedures. Only 18% of the reform officers and 1% of the non‐reform officers had both read the Guide and received training based on it. We discuss the implications of the present study for training U.S. law enforcement officers about eyewitness testimony. Copyright © 2010 John Wiley & Sons, Ltd.     

Global,component, and serial processing of printed words in beginning reading

Nonreaders (end of kindergarten) and beginning readers (end of first grade) were compared. Both nonreaders and beginning readers imposed integral perceptual structures on shape/terminal letter information and configural perceptual structures on medial letter information: visual attention varied as a function of the unit of visual information but not as a function of learning to read. Nonreaders remembered a word more accurately than a letter in a word, showing visual origins of the word superiority effect. Beginning readers remembered a word faster than a letter in a word, which they remembered faster than a letter sequence in a word, suggesting early origins of the word priority effect. Only gains in memory for a letter sequence correlated with gains in word decoding. Throughout first grade, sentence verification was faster, not more accurate, when sentences were presented normally compared to one word at a time; repeated exposure of a word in parafoveal and foveal vision facilitates speed but not accuracy of comprehension. Results are discussed in reference to a model of global, component, and serial procedures.     

Age‐related Differences in the Free‐recall Accounts of Child,Adolescent, and Adult Witnesses

Many researchers have examined the factors that affect children's ability to provide eyewitness evidence, leading to significant reform in policy and practice. In stark contrast, there has been virtually no eyewitness research conducted with adolescents, even though adolescents are still undergoing developmental changes that are likely to affect eyewitness performance. We compared the eyewitness performance of children, adolescents, and adults by showing them a brief film clip depicting a simulated crime and using cognitive interview instructions to elicit free‐recall accounts. Adolescents provided more information than children, but less information than adults. Accuracy did not differ with age. These data suggest that, like children, adolescents could benefit from specialised interview techniques that help them provide more complete accounts. Across all three age groups, individual differences in cognitive functioning contributed to variation in eyewitness performance, and eliciting a second free‐recall account increased the amount of information reported. Copyright © 2013 John Wiley & Sons, Ltd.     

Eyewitness memory for arousing events: putting things into context

If attention is focused on central details at high levels of arousal, memory for peripheral details should be diminished (Easterbrook, 1959 ). If this is the case, contextual reinstatement (CR) procedures should not enhance memory because these procedures specifically use peripheral information to cue memory. The present experiment tested how arousal influenced eyewitness memory for an event and how it interacts with CR procedures. Participants first viewed one of three series of slides (neutral, arousal, or unusual/control). Memory for central and peripheral details was tested via photo lineups and recognition tests. Although CR procedures enhanced recognition memory for non‐arousing and unusual events, they did not affect recognition memory for arousing events. Analyses of the peripheral photo lineup and peripheral recognition test data revealed that CR enhanced the hit rate for the neutral and unusual conditions but not for the arousal condition. Although CR procedures tended to enhance recognition of central information (increasing the hit rate and decreasing the false alarm rate), CR had a smaller enhancement effect in the arousal condition relative to the neutral and unusual conditions. The present experiment also replicates the Christianson and Loftus ( 1991 ) finding that peripheral information is not remembered as well in an arousing event, as compared to memory of neutral and unusual events. The theoretical and applied implications of these results are discussed. Copyright © 2002 John Wiley & Sons, Ltd.     

Presence of administrators differentially impacts eyewitness discriminability for same- and other-race identifications

Best practice guidelines recommend that eyewitness lineup administrators be blind to a suspect's identity, but no research has investigated whether the mere presence of a lineup administrator impacts eyewitness identification decisions. Informed by social facilitation theory, we predicted that the presence of an audience would differentially impact identification accuracy for same- and other-race identifications. Participants (N = 191) viewed same- and other-race lineups either with an audience or alone. Although the presence of an audience did not directly impact identification accuracy, significant indirect effects indicated that the audience provoked evaluation apprehension which hindered other-race identification accuracy and improved same-race identification accuracy. We suggest that using double-blind lineup procedures may not sufficiently protect eyewitness identification accuracy when making other-race lineup decisions in the presence of others.     

The Influence of Music on Memory

Allan Paivio's dual-coding hypothesis of retention predicts that stimuli high in imagery value facilitate imaginal processing, while high meaningfulness stimuli facilitate verbal processing. When verbal and imaginal instructional sets have been used to test the predicted interactions, as mentioned above, the findings have almost always been negative, indicating a lack of support for a dual-process theory of coding in retention.

In the present study it was hypothesized that instructional sets offer inadequate tests of dual or multiple-process theories because the proactive history of the verbal and imaginal semantic properties of the word lists determine coding in retention. That hypothesis was tested in two studies, one with children and one with adults. Verbal and imaginal attributes were varied in instructional sets and in word lists. As hypothesized, the interaction predicted by a dual-process theory of coding occurred in both studies (p < .0001). The interaction involved verbal and imaginal word attributes, but not the instructional sets.

The findings are relevant to the testing of predictions from dual-process theories of retention and to reinterpretation of the results of earlier findings. In this study and in many related ones reviewed in the introduction, the “elusive” interaction predicted by a dual-process theory regularly does occur, and it seems to be determined by attributes of word lists.     

Learning Count Nouns and Adjectives: Understanding the Contributions of Lexical Form Class and Social-Pragmatic Cues

In two experiments, one hundred ninety-two 3-year-olds, 4-year-olds, and adults heard a novel word for a target object and then were asked to extend the label to one of two test objects, one matching in shape-based object category (the shape match) and the other matching in a property other than shape (the property match). We independently manipulated the lexical form class cues (count noun, adjective) and social-pragmatic cues (point actions, property-highlighting actions) accompanying the label. The impact of these two types of cue on extension differed markedly across age groups. Adults and 4-year-olds extended the word to the property match significantly more often when the term was modeled as an adjective and when it was presented with property-highlighting actions; but adults extended both adjectives and count nouns systematically to the property match when the speaker highlighted the non-shape property, whereas 4-year-olds systematically extended only adjectives to the property match under these conditions. Three-year-olds extended the word to the property match significantly more often when the label was modeled as an adjective but were not significantly affected by the social-pragmatic cues; and they failed to extend either adjectives or count nouns systematically to the property match when the speaker highlighted the non-shape property. We discuss the results in terms of the proposal that word learning draws on cues from multiple sources and the nature of the “shape bias” in lexical development.     

Bartlett revisited: Direct comparison of repeated reproduction and serial reproduction techniques

Bartlett developed the procedures of repeated reproduction (the same person repeatedly recalling information) and serial reproduction (people transmitting information from one person to another). Our experiment directly compared recall accuracy across these two techniques, which has not previously been reported, using DRM word lists. Recall of the initial study list words remained constant across repeated reproductions but declined markedly across serial reproductions. In contrast, recall of associated words that were not originally studied (i.e. critical words) was steady across both conditions. Because more of the original list words were forgotten across each link of the serial reproduction chain, the proportion of critical items recalled (relative to list words) increased significantly as the list passed between people. Using output bound scoring, serial reproduction resulted in lower accuracy than repeated reproduction by the final recall trial. Our results are broadly consistent with Bartlett's (1932) informal observations: Serial reproduction produces greater forgetting of the original material than does repeated reproduction and also leads to greater distortion relative to the proportion of correct material recalled.