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1.
Long-term memory retrieval efficiency was investigated as a potential underlying source of individual and developmental differences in cognitive functioning. Fourth-grade, eighth-grade, and college-aged subjects participated in a task using the Posner letter-matching paradigm. Letter pairs were presented simultaneously under physical-match and name-match instruction conditions. Reaction times were used to estimate parameters of long-term memory retrieval efficiency, basic encoding, decision, and response time, and name and physical output interference. Psychometric tests of verbal and spatial ability were included to assess convergent and discriminant validity of hypothesized relationships between aptitude test performance and basic cognitive processes. Developmental differences were observed in most but not all of the processing variables. Individual difference analyses indicated that less confounded estimates of processing parameters were not systematically related to verbal ability at any age level. Basic encoding and response speed was the most consistent correlate of spatial ability. The results suggest difficulties in previous interpretations of NIPI-verbal ability relationships. The study of cognitive processes in interaction and embedded in meaningful tasks is discussed.  相似文献   

2.
Text comprehension requires readers to mentally simulate the described situation by reactivating previously acquired sensory and motor information from (episodic) memory. Drawing upon research demonstrating gender differences, favouring girls, in tasks involving episodic memory retrieval, the present study explores whether gender differences exist in mental simulation in children (Grades 4 to 6). In Experiment 1, 99 children performed a sentence–picture verification task measuring mental simulation at sentence level. In Experiment 2, 97 children completed a lexical decision task in which imageability of words was manipulated to measure mental simulation at word level. Only for girls we found faster reaction times for matching versus mismatching sentence–picture pairs (Experiment 1) and high‐imageability versus low‐imageability words (Experiment 2). The results suggest that girls construct more coherent and vivid mental simulations than boys and rely more heavily on these representations. The results emphasize the importance of including gender into reading comprehension research. [Correction added on 13 June 2016, after first online publication: The affiliation of author “Björn B. de Koning” was previously wrong and has been corrected in this current version.]  相似文献   

3.
An extensive body of literature has explored the involvement of motor processes in mental rotation, yet underlying individual differences are less documented and remain to be fully understood. We propose that sensorimotor experience shapes spatial abilities such as assessed in mental rotation tasks. Elite wrestlers' and non-athletes' mental rotation accuracy and response times were measured in three different conditions: mental rotation (a), mental rotation with visual (b) and movement (c) interference. Results showed that both groups were equally affected by the visual interference task, as hypothesized from previous literature. However, the movement interference task impacted tremendously more wrestlers' mental rotation performance. These findings suggest that experts in motor activities rely heavily on motor processes in three-dimensional mental rotation problems solving, thus performing more poorly when simultaneously holding movements. The implications of this work in providing further evidence for the close tie between perceptive, motor and cognitive processes are discussed.  相似文献   

4.
A Global Developmental Trend in Cognitive Processing Speed   总被引:5,自引:1,他引:5  
Children respond more slowly than young adults on a variety of information-processing tasks. The global trend hypothesis posits that processing speed changes as a function of age, and that all component processes change at the same rate. A unique prediction of this hypothesis is that the overall response latencies of children of a particular age should be predictable from the latencies of young adults performing the same tasks--without regard to the specific componential makeup of the task. The current effort tested this prediction by examining the performance of 4 age groups (10-, 12-, 15-, and 19-year-olds) on 4 different tasks (choice reaction time, letter matching, mental rotation, and abstract matching). An analysis that simultaneously examined performance on all 4 tasks provided strong support for the global trend hypothesis. By plotting each child group's performance on all 4 tasks as a function of the young adult group's performance in the corresponding task conditions, precise linear functions were revealed: 10-year-olds were approximately 1.8 times slower than young adults on all tasks, and 12-year-olds were approximately 1.5 times slower, whereas 15-year-olds appeared to process information as fast as young adults.  相似文献   

5.
Unobservable properties that are specific to individuals, such as their proper names, can only be known by people who are familiar with those individuals. Do young children utilize this “familiarity principle” when learning language? Experiment 1 tested whether forty-eight 2- to 4-year-old children were able to determine the referent of a proper name such as “Jessie” based on the knowledge that the speaker was familiar with one individual but unfamiliar with the other. Even 2-year-olds successfully identified Jessie as the individual with whom the speaker was familiar. Experiment 2 examined whether children appreciate this principle at a general level, as do adults, or whether this knowledge may be specific to certain word-learning situations. To test this, forty-eight 3- to 5-year-old children were given the converse of the task in Experiment 1—they were asked to determine the individual with whom the speaker was familiar based on the speaker’s knowledge of an individual’s proper name. Only 5-year-olds reliably succeeded at this task, suggesting that a general understanding of the familiarity principle is a relatively late developmental accomplishment.  相似文献   

6.
This study examined developmental changes in Level-2 visual perspective taking (VPT2) in 90 children aged 4–12 years and tested the role of their ability to mentally simulate changes to their bodily locations (self-motion imagery; SMI). Performance of a mental toy rotation task and a self-motion (SM) task (changing location of children) was superior to that of VPT2 and SMI tasks. Task performance of SMI was better than that of VPT2 before 10;0 (years;months). Furthermore, egocentric responses in VPT2 and SMI tasks were significantly more frequent than those in the mental rotation and SM tasks before 10;3. These findings suggest the involvement of embodied cognitive processes in perspective taking and the advantage of utilizing bodily information by age 10.  相似文献   

7.
Children (mean CA = 12 years) with mental retardation and adults without mental retardation classified tetrads of stimuli that could be grouped according to identities on separate dimensions or according to overall similarity. When color, size, and line orientation were varied (Experiment 1), both groups used separate dimensions for classification. When hue, saturation, and brightness varied (Experiment 2), both groups used overall similarity for classification. Test-retest correlations showed that the predominant classifications were reliable across 1-week testing intervals. Results support Garner's distinction between separable and integral stimulus structure but do not support an integral-to-separable shift in perceptual development. Comparisons of the tetrad task used in the present study and triads used in previous work are discussed as well as implications of the present data for developmental theories of perceptual classification and processing in children with mental retardation.  相似文献   

8.
Thirty-two subjects were first submitted to a series of aptitude tests, then participated in a mental rotation task with advance information (Cooper, 1975), and finally gave retrospective reports about their solution strategy. The verbal reports showed that different subjects used different strategies to perform the rotation task, and also that some subjects shifted strategies, in that they successively adopted several ways of processing the same task. The coding of verbal reports led to distinguish five types of strategies (called rotation, partial rotation, verbal, projection, multiple). Five groups of subjects using preferentially one of these strategies were constituted. For each group hypotheses on performance were tested via analyses on reaction times and errors. These analyses confirmed that the five strategy groups produced different patterns of RT in conformity with verbal reports. Moreover the comparison of the mental aptitude profiles across the different strategy groups suggests that strategy choices are affected by steady and general characteristics of cognitive functioning.  相似文献   

9.
Children's understanding of the static representation of speed of locomotion was explored in 2 experiments. In Experiment 1, 20 7-year-olds and 20 9-year-olds drew pictures of 2 people walking and running at different speeds. Children then made judgments about pairs of unambiguous drawings of a person walking or running, as did a sample of 20 adults. The drawings varied according to whether action lines, background lines, or no lines were present. Children were asked to say which figure appeared to be moving faster. In Experiment 2, 20 7-year-olds, 20 9-year-olds, and 21 adults sorted ambiguous drawings of a person walking and running at different speeds. The pictures again contained action lines, background lines, or no lines. In the drawing task, children more frequently used page position and biomechanical information than action lines to represent fast and slow walking and running. In the judgment task, 7- and 9-year-olds offered equivalent judgments of action lines and background lines, whereas adults distinguished between these pictorial devices. In the sorting task, all subjects distinguished between action lines and background lines and judged that pictures containing action lines looked faster than pictures containing background lines and pictures without lines. Taken together, the results indicate that subjects' judgments were influenced by the form of locomotion and degree of ambiguity in the depicted events they saw. The findings are consistent with the view that different categories of pictorial devices exist, but the effectiveness of each device is contingent upon the perceiver's experience with it and the context in which it appears.  相似文献   

10.
The main goal of this study was to investigate the influence of an established school programme with a high amount of physical education on visual-spatial ability in a secondary school. One hundred and forty-four adolescents, 69 from sport classes and 75 from regular classes, solved a cognitive processing speed task and a mental rotation task. The results reflect a better cognitive processing speed of the boys in the sports classes compared to regular classes but no differences for girls. Concerning the mental rotation performance, we found a significantly better mental rotation performance for boys and girls in the sports classes compared to regular classes due to an increased number of items worked on. Supposedly, motor expertise facilitates mental rotation performance by promoting a faster editing of the task. The benefits of sport classes in normal high school settings have to be investigated in further studies considering the effect on academic performance.  相似文献   

11.
11 children meeting DSM III criteria for schizophrenia (mean age approximately 12 years), a group of normal children matched in mean mental age to the schizophrenic children, and a group of younger normal children (mean age 6.6 years) were administered a series of visual information-processing tasks in order to isolate core information-processing impairments in childhood onset schizophrenia. In Experiment 1, the schizophrenic children showed impairment relative to the MA-matched normals and performed at the level of the younger normal children on a forced-choice partial-report version of the span-of-apprehension task. Previous research has shown that this task is sensitive to dysfunction in both actively and partially recovered schizophrenic adults as well as a subset of foster children at risk for schizophrenia. Experiment 2 delimited the source of the information-processing impairment in schizophrenic children by ruling out a number of possible causes of impairment and suggesting that schizophrenic children use the same information-acquisition strategies as MA-matched children but less efficiently. Experiment 3 revealed that, consistent with the previous research, the schizophrenic children were comparable with the MA-matched controls on a full-report span-of-apprehension task that placed heavy demands on iconic and short-term memory. Both the schizophrenic and MA-matched normals performed significantly better than the younger normal children. Taken collectively, the results of the three experiments suggest that all groups of children engaged in a serial information-processing strategy while performing on the partial-report version of the span-of-apprehension task. The differential impairment of the schizophrenic children on the partial-report versions but not the full-report version of the span-of-apprehension task seems to reflect inefficiencies in controlled attentional processes that normally develop during middle childhood.  相似文献   

12.
2 experiments examined children's understanding of the expression of speaker certainty and uncertainty and its relation to their developing theory of mind. In the first experiment, 80 children between 3 and 6 years of age were presented with a task in which they had to guess the location of an object hidden in 1 of 2 boxes. As clues to location, the children were presented with contrasting pairs of statements by 2 puppets. Different trials contained all of the possible pairwise combinations of either the modal verbs must, might, and could or the modal adjuncts probably, possibly, and maybe. Results showed that while 3-year-olds did not differentiate between any of the modal contrasts presented, 4-year-olds and older children were able to find the hidden object on the basis of what they heard. Performance was best for contrasts involving a highly certain term (either must or probably) paired with a less certain term (might, could, possibly, and maybe). Experiment 2 was designed to determine whether competence with modal terms was related to competence with mental terms in the same task, and whether performance on the certainty task was related to other aspects of the child's understanding of the nature of beliefs. 26 4-year-olds were presented with the certainty task, involving both modal and mental terms, and with tasks assessing their understanding of false beliefs, representational change, and the appearance-reality distinction. Results showed that all of these tasks were intercorrelated, implying that what may develop at 4 years of age may be a general understanding of the representational nature of belief.  相似文献   

13.
In two reading level design experiments, matched groups of normal and poor readers were compared with regard to their use of phonological and orthographic information. Experiment 1 used a semantic decision task similar to the task described in the study of Jarvella & Snodgrass (1974). Experiment 1 was aimed to assess the way normal and poor readers, matched on reading level, automatically process phonological and orthographic incongruencies when comparing the singular and plural of nouns. Experiment 2 investigated the automatized processing of uppercase-lowercase letter incongruencies in a same-different task using words and pseudowords. It assessed the role of letter feature cues involved in the initial identification process. Experiment 1 demonstrated that poor readers needed more time for evaluating phonologically incongruent word pairs. No independent effect of orthographic incongruency was found. Experiment 2 showed that, if compared with reading age matched normals, poor readers had more problems with evaluating uppercase-lowercase incongruencies. This orthographic processing problem was particularly prominent when pseudowords were presented. It is concluded that poor readers not only have phonological processing problems, but also have difficulties at the orthographic processing level.  相似文献   

14.
Jigsaw puzzles are ubiquitous developmental toys in Western societies, used here to examine the development of metarepresentation. For jigsaw puzzles this entails understanding that individual pieces, when assembled, produce a picture. In Experiment 1, 3- to 5-year-olds (N = 117) completed jigsaw puzzles that were normal, had no picture, or comprised noninterlocking rectangular pieces. Pictorial puzzle completion was associated with mental and graphical metarepresentational task performance. Guide pictures of completed pictorial puzzles were not useful. In Experiment 2, 3- to 4-year-olds (N = 52) completed a simplified task, to choose the correct final piece. Guide-use associated with age and specifically graphical metarepresentation performance. We conclude that the pragmatically natural measure of jigsaw puzzle completion ability demonstrates general and pictorial metarepresentational development at 4 years.  相似文献   

15.
Recent evidence from this laboratory suggests that a context switch after operant learning consistently results in a decrement in responding. One way to reduce this decrement is to train the response in multiple contexts. One interpretation of this result, rooted in stimulus sampling theory, is that conditioning of a greater number of common stimulus elements arising from more contexts causes better generalization to new contexts. An alternative explanation is that each change of context causes more effortful retrieval, and practice involving effortful retrieval results in learning that is better able to transfer to new situations. The current experiments were designed to differentiate between these two explanations for the first time in an animal learning and memory task. Experiment 1 demonstrated that the detrimental impact of a context change on an instrumental nose-poking response can be reduced by training the response in multiple contexts. Experiment 2 then found that a training procedure which inserted extended retention intervals between successive training sessions did not reduce the detrimental impact of a final context change. This occurred even though the inserted retention intervals had a detrimental impact on responding (and, thus, presumably retrieval) similar to the effect that context switches had in Experiment 1. Together, the results suggest that effortful retrieval practice may not be sufficient to reduce the negative impact of a context change on instrumental behavior. A common elements explanation which supposes that physical and temporal contextual cues do not overlap may account for the findings more readily.  相似文献   

16.
The present study investigates the relation between spatial ability and visuo-spatial and verbal working memory in spatial text processing. In two experiments, participants listened to a spatial text (Experiments 1 and 2) and a non-spatial text (Experiment 1), at the same time performing a spatial or a verbal concurrent task, or no secondary task. To understand how individuals who differ in spatial ability process spatial text during dual task performance, spatial individual differences were analyzed. The tasks administered were the Vandenberg and Kuse [Vandenberg, S. G., & Kuse, A. R. (1978). Mental rotation, a group test of three-dimensional spatial visualization. Perceptual and Motor Skills, 47, 599-604.] mental rotation test (MRT) and a reading comprehension task (RCT). Individuals with high (HMR) and low (LMR) mental rotation differed in MRT scores but had similar RCT performance. Results showed that the HMR group, in contrast with LMR counterparts, preserved good spatial text recall even when a spatial concurrent task was performed; however, Experiment 2 revealed a modification of spatial concurrent task performance in LMR as well in HMR group. Overall, results suggest that HMR individuals have more spatial resources than LMR individuals, allowing them to compensate for spatial working memory interference, but only to a limited extent, given that the processing of spatial information is still mediated by VSWM.  相似文献   

17.
心理旋转是人在头脑中想象和操作物体作视觉空间转换的过程。Shepard和Metzler从1971年开始对心理旋转的研究,此后有许多认知心理学家对心理旋转进行了大量的实验和验证。心理旋转的实验多以成人为被试,对它的发展性研究相对较少。当前大多数研究证实了在儿童4岁时操纵简单刺激物时就有了心理旋转能力;在心理旋转的准确性和匹配速度方面,中青年阶段都要优于儿童和老年人;在完成任务的速度上,儿童又优于老年人。心理旋转对早期儿童教育和中学教育都很重要,因此我们应在游戏和日常生活中培养儿童的空间知觉能力,根据儿童青少年的个体差异设置课程,改革中小学几何教学以提高儿童青少年的空间智能。  相似文献   

18.
Children of 3 ages (8, 10, and 12 years) and adults were asked to decide rapidly whether 2 line drawings were same or different based on either physical appearance (physical match) or name information (name match). Reaction times were used to estimate several temporal measures of information-processing efficiency, such as the difference between different and same judgments, the difference between name-match and physical-match judgments, and 2 types of interference. Different judgments required more time than same judgments for children but not for adults, and the difference between these decreased with age. As expected, name judgments required more time than physical judgments, but the difference did not decrease regularly with age. Interference in name-match decisions due to conflicting and irrelevant physical information decreased with age; however, interference in physical-match judgments due to conflicting and irrelevant name information does not decline with age and was a significant factor in the performance of older children and adults. The results underscore the complex character of developmental change in processing efficiency.  相似文献   

19.
Children''s Awareness of the Biological Implications of Kinship   总被引:5,自引:0,他引:5  
Preschoolers' thinking about kinship was explored by means of a simple induction task. A target animal was described as possessing a property, and children were asked whether each of 2 other animals shares the property or not. When no information about kinship was given, children in Experiment 1 based their inductions of biological properties on physical similarity. However, when kinship relations were specified, children judged that dissimilar-looking kin share more biological properties than similar-looking but unrelated members of the same species. In Experiment 2, describing the similar animals as socially related did not change the basic pattern of inductions obtained in the first experiment. Moreover, subjects in Experiment 3 did not induce more acquired physical and psychological properties among families than among unrelated animals. The results of Experiments 1 and 2 illustrate one case where young children favor a nonperceptible relation (kinship) over a perceptible one (similarity) as a basis for judgment. The overall pattern of data suggest that young children distinguish to some extent between the biological and social domains.  相似文献   

20.
The effect of stimulus rotation was assessed in four Guinea baboons (Papio papio), using pictures of familiar human faces presented in a computerized go/no-go task. In Experiment 1, 2 baboons were initially trained to discriminate upright faces, and 2 others were trained to discriminate upside-down faces. For the two groups, postlearning discrimination was impaired when the training faces were rotated 180°. In Experiment 2, upright and upside-down priming faces appeared prior to the display of target faces. For the two groups, response times were faster when the prime and the target faces had the same orientations than when they were depicted under different orientations. Finally, Experiments 3 and 4 identified variations in facial contours as the most salient discriminative cue controlling performance in 2 baboons. Altogether, our results provide no evidence that the baboons processed the pictures as representations of faces. It is suggested that the effect of rotation derived from the encoding of the pictorial faces as meaningless mono-oriented shapes, rather than as natural human faces.  相似文献   

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