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1.
Inhibitory control and incentive processes underlie decision making, yet few studies have explicitly examined their interaction across development. Here, the effects of potential rewards and losses on inhibitory control in 64 adolescents (13- to 17-year-olds) and 42 young adults (18- to 29-year-olds) were examined using an incentivized antisaccade task. Notably, measures were implemented to minimize age-related differences in reward valuation and potentially confounding motivation effects. Incentives affected antisaccade metrics differently across the age groups. Younger adolescents generated more errors than adults on reward trials, but all groups performed well on loss trials. Adolescent saccade latencies also differed from adults across the range of reward trials. Overall, results suggest persistent immaturities in the integration of reward and inhibitory control processes across adolescence. 相似文献
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Neurocognitive function and joint attention ability in young children with autism spectrum disorder versus developmental delay 总被引：5，自引：0，他引：5
Dawson G Munson J Estes A Osterling J McPartland J Toth K Carver L Abbott R 《Child development》2002,73(2):345-358
Studies have shown that young children with autism are not impaired on prefrontal tasks relative to what would be expected for their mental age, raising questions about the executive dysfunction hypothesis of autism. These studies did not include ventromedial prefrontal tasks, however. The present study examined whether young children with autism spectrum disorder (ASD) are impaired on ventromedial prefrontal tasks, and whether performance on such tasks is correlated with a core autism symptom, joint attention ability. Seventy-two 3- to 4-year-old children with ASD, 34 3- to 4-year-old developmentally delayed children, and 39 12- to 46-month-old typically developing children, matched on mental age, were administered ventromedial and dorsolateral prefrontal tasks and joint attention tasks. Children with ASD performed similarly to comparison groups on all executive function tasks, indicating that at this early age, there is no autism-specific pattern of executive dysfunction. Ventromedial, but not dorsolateral, prefrontal task performance was strongly correlated with joint attention ability, however. The ventromedial prefrontal cortex is hypothesized to play a role in the development of joint attention and possibly some aspects of the autistic syndrome. 相似文献
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The present study investigated the ability of 3- and 4-year-old children to perform tasks which require matching sets of sounds to numerically equivalent visual displays. We found that 3-year-olds performed at chance on the auditory-visual matching task, while 4-year-olds performed significantly above chance. There is evidence that mastery of the linguistic counting system is related to success on this task. These findings are unexpected given previous research reporting that 6–8-month-olds can detect the numerical equivalence between a set of sounds and items in a visual display. 相似文献
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《Early childhood research quarterly》1995,10(2):145-169
This study examined the correspondence between ontogenetic and microgenetic change in private speech, the association of private speech with task performance, and the relationship of maternal interaction during a teaching session to preschoolers' verbal self-regulation and success in independent problem solving. Thirty 4- and 5-year-olds were observed while their mothers assisted them in solving two challenging tasks. In three subsequent sessions, children's private speech and performance were tracked as they worked on tasks requiring skills similar to those taught in the mother-child session. Correspondences between age- and session-related trends in private speech and task performance appeared that are consistent with Vygotsky's assumption that private speech undergoes progressive internalization with increasing cognitive competence. Contrary to Vygotskian assumptions, utterances accompanying action were not replaced by those preceding action (planning statements) with advancing age and task mastery. Private speech predicted gain in task performance more effectively than concurrent performance. A global index of authoritative parenting was a better predictor of private speech and task performance than were microanalytic measures of scaffolding, suggesting that microanalytic indices may miss critical features of maternal teaching behavior that promote transfer of cognitive strategies from adult to child. 相似文献
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4 locative categories were investigated to determine whether their examples were organized according to the prototype/nonprototype distinction. A ranking task was presented to 30 adult subjects to see whether they would judge those instances which had been designated as prototypes by the experimenter to be the best exemplars of each category. An elicited-drawing task was administered to see whether there was a preference for drawing adult-designated prototypical instances. A matching task was presented to determine whether fewer errors would occur in response to adult-designated prototypical instances. The latter 2 tasks were presented to 4-year-olds, 6-year-olds, and adults, with 17 subjects in each group. The results provide strong evidence of prototype/nonprototype organization in 3 of the locative categories and weak evidence in the fourth. Tentative conclusions regarding the development of such organization are drawn. 相似文献
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Preschoolers' Reasoning about Density: Will It Float? 总被引：1，自引：0，他引：1
Amy S. Kohn 《Child development》1993,64(6):1637-1650
Density is a complex concept found to appear late in development. However, density has a readily apparent empirical consequence—buoyancy. Early scientific understanding of density arose through Archimedes' discovery of water displacement as a function of density, and young children have experience playing with objects in water. Therefore, a buoyancy prediction task was developed in order to access preschoolers' early understanding of density. 3–5-yearold children from 2 preschool classes, as well as adults, made buoyancy predictions for a set of objects that varied systematically in density, weight, and volume. 4–5-year-olds (from the older class) and adults were shown to demonstrate similar patterns in their judgments. Objects much more or much less dense than water were more accurately judged than objects with densities closer to the density of water. Weight and volume were found to "interfere" in these judgments in systematic ways for the older class of children and the adults. Children in the younger class (3-year-olds) showed a mean proportion correct performance of .53; they all passed a pretest, however, and no child refused to make judgments. 相似文献
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To investigate the symbolic quality of preschoolers' gestural representations in the absence of real objects, 48 children (16 3-, 4-, and 5-year-olds) performed 2 tasks. In the first task, they were asked to pretend to use 8 common objects (e.g., "pretend to brush your teeth with a toothbrush"). There was an age-related progression in the symbolic quality of gestural representations. 3- and 4-year-olds used mostly body part gestures (e.g., using an extended finger as the toothbrush), whereas 5-year-olds used imaginary object gestures (e.g., pretending to hold an imaginary toothbrush). To determine if children's symbolic skill is sufficiently flexible to allow them to use gestures other than those spontaneously produced in the first task, in the second task children were asked to imitate, for each object, a gesture modeled by an experimenter. The modeled gesture was different from the one the child performed on the first task (e.g., if the child used a body part gesture to represent a particular object, the experimenter modeled an imaginary object gesture for that object). Ability to imitate modeled gestures was positively related to age but was also influenced by the symbolic mode of gesture. 3-year-olds could not imitate imaginary object gestures as well as body part gestures, suggesting that young preschoolers have difficulty performing symbolic acts that exceed their symbolic level even when the acts are modeled. Results from both tasks provide strong evidence for a developmental progression from concrete body part to more abstract imaginary object gestural representations during the preschool years. 相似文献
9.
Jennifer Amsterlaw Kristin Hansen Lagattuta and Andrew N. Meltzoff 《Child development》2009,80(1):115-133
This study assessed young children's understanding of the effects of emotional and physiological states on cognitive performance. Five, 6-, 7-year-olds, and adults ( N = 96) predicted and explained how children experiencing a variety of physiological and emotional states would perform on academic tasks. Scenarios included: (a) negative and positive emotions, (b) negative and positive physiological states, and (c) control conditions. All age groups understood the impairing effects of negative emotions and physiological states. Only 7-year-olds, however, showed adult-like reasoning about the potential enhancing effects of positive internal states and routinely cited cognitive mechanisms to explain how internal states affect performance. These results shed light on theory-of-mind development and also have significance for children's everyday school success. 相似文献
10.
This study investigated children's choices of deliberate practice strategies. Six-to 11-year-olds (n = 85) were presented with three outwardly similar motor tasks that varied only in the precision of the motor response required to succeed. Children then had the opportunity to practice these tasks before a “test” in which they had to complete all three tasks in the fastest overall time. While children of all ages spent relatively more time practicing the hardest task, only 10- and 11-year-olds scored more successes on the hardest task than the other tasks during the initial practice period. After verbal instruction, however, children of all ages scored more successes on the hardest task during practice, and younger children became more likely to persevere with the hardest task rather than switching tasks after a success. Children's practice choices may vary as a function of age and verbal instruction. 相似文献
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《Early childhood research quarterly》1996,11(3):405-424
This study investigated the instructional strategies mothers used when interacting with their child on a concept-learning task and the effect of this interaction on subsequent independent child performance. Also investigated was whether mothers' behaviors and perceptions differed depending on the child's age, task difficulty, or the child's needs for assistance. Sixty 3- and 5-year-old children participated in a three-phase sequence of tasks that required the matching of opposite concepts. The pretest and posttest phases were identical for all children, but during the second phase half the children completed the tasks with their mothers and half continued to work independently. During each phase, children received both an easy and a difficult version of the task. Children who interacted with their mothers matched more concepts correctly on the posttest and gave more correct explanations for their matches than children who worked independently. Mothers of 3-year-olds provided more assistance than mothers of 5-year-olds, and mothers provided higher levels of assistance on the difficult task than on the easy task. Most mothers were sensitive to their child's needs in that the instructional strategies they adopted throughout the interaction were appropriately modified in response to their child's successes and failures. There was some evidence that individual differences in maternal sensitivity were related to variations in children's independent performance. Mothers' perceptions of the task, of their child's needs for assistance, and of their own role in the interaction were related to their overt behaviors. Intervention programs aimed at fostering parents' skills in interacting with their children should emphasize the importance of scaffolded instruction tuned to the child's capabilities. 相似文献
12.
Schult CA 《Child development》2002,73(6):1727-1747
Much of the previous research on children's understanding of intentions confounded intentions with desires. Intentions and desires are different, in that a desire can be satisfied in a number of ways, but an intention must be satisfied by carrying out the intended action. Children 3 through 7 years of age and adults were presented with situations in which intentions were satisfied but desires were not, or vice versa, in a story-comprehension task (N = 71) and a target-hitting game (N = 45). Although 3- and 4-year-olds were unable to differentiate desires and intentions consistently, 5- and 7-year-olds often matched the adult pattern. Younger children's difficulties in understanding intentions are discussed in terms of their use of a desire-outcome matching strategy and the representational complexities of intentions. 相似文献
13.
Amanda W. Joyce Jessica H. Kraybill Nan Chen Kimberly Cuevas Kirby Deater-Deckard Martha Ann Bell 《Early education and development》2016,27(6):788-804
Research Findings: A total of 81 children participated in a longitudinal investigation of inhibitory control (IC) from 2 to 4 years of age. Child IC was measured via maternal report and laboratory measures under conditions of conflict and delay. Performance on delay IC tasks at 3 years was related to performance on these same tasks at 2 and 4 years, but performance on conflict IC tasks was not related over time. Delay IC task performance was concurrently related to conflict IC task performance in 3- and 4-year-olds but was not related in 2-year-olds. Measures of IC varied in their associations with measures of verbal ability and maternal-report IC. Such findings highlight important similarities and distinctions between conflict and delay IC abilities in their relation to one another and to temperament and language over time. Practice or Policy: Studies of IC and related concepts reveal that children who are regulated enjoy school more and have higher school competence, particularly in mathematics and reading achievement. Because conflict IC and delay IC show unique patterns of development over time, educators can expect classroom behaviors drawing on the state-like conflict IC to show more fluctuation over time than those drawing on the trait-like delay IC. 相似文献
14.
Cumulative experience with a variety of symbolic artifacts has been hypothesized as a source of young children's increasing sensitivity to new symbol-referent relations. Evidence for this hypothesis comes from transfer studies showing that experience with a relatively easy symbolic retrieval task improves performance on a more difficult task. Significant transfer was found for the 2(1/2)-year-old children in the 3 studies reported here, even with relatively low levels of contextual support (according to the taxonomy of transfer by Barnett & Ceci, 2002). Transfer occurred even though the 2 tasks were encountered in very different settings and there was a prolonged (1-week) delay interval between them. Transfer also occurred to a much more difficult task (one that even 3-year-olds typically fail). 相似文献
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The relationships between response latencies and accuracy on the matching familiar figures test (MFFT) and two gross motor tasks (batting or catching a ball) were studied in twenty-nine 9-year-old boys. Children were classified into four groups using a double dichotomy of response latencies and errors on the MFFT: reflective, impulsive, fast-accurate, and slow-inaccurate on intertask comparison. The components (errors and time) used to classify the children show stability for errors but not latencies on cognitive versus motor intertask comparison. The comparison between motor tasks shows the stability for latencies and accuracy, a nonlinear relationship between latency and accuracy for the ball-hitting but not the ball-catching task, and reflective boys to be the most efficient on the task requirement.These results lend support to the hypothesis that strategies are more a consequence of a “competence” than a “conceptual tempo” factor. 相似文献
16.
Nancy C. JordanJanellen Huttenlocher Susan Cohen Levine 《Learning and individual differences》1994,6(4)
In two studies, we compared young children's performance on three variations of a nonverbally presented calculation task. The experimental tasks used the same nonverbal mode of presentation but were varied according to response type: (1) putting out disks (nonverbal production); (2) choosing the correct number of disks from a multiple-choice array (nonverbal recognition); and (3) giving a number word (verbal production). The verbal production task required children to map numerosities onto the conventional number system while the nonverbal production and nonverbal recognition tasks did not. Study 1 showed that the performance of 3-, 4- and 5-year-old middle-income children (N = 72) did not vary with the type of response required. Children's answers to nonverbally presented addition and subtraction problems were available in both verbal and nonverbal forms. In contrast. Study 2 showed that low-income children (3- and 4-year-olds; N = 48) performed significantly better on both nonverbal response type tasks than on the verbal response type task. Analysis of individual data indicated that a number of the low-income children were successful on the completely nonverbal calculation tasks, even though they had difficulty with verbal counting (i.e., set enumeration and cardinality). The findings suggest that the ability to calculate does not depend on mastery of conventional symbols of arithmetic. 相似文献
17.
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
18.
On belief-desire reasoning tasks, children first pass tasks involving true belief before those involving false belief, and tasks involving positive desire before those involving negative desire. The current study examined belief-desire reasoning in participants old enough to pass all such tasks. Eighty-three 6- to 11-year-olds and 20 adult participants completed simple, computer-based tests of belief-desire reasoning, which recorded response times as well as error rates. Both measures suggested that, like young children, older children and adults find it more difficult to reason about false belief and negative desires than true beliefs and positive desires. It is argued that this developmental continuity is most consistent with either executive competence or executive performance accounts of the development of belief-desire reasoning. 相似文献
19.
David Estes 《Child development》1998,69(5):1345-1360
From Piaget's early work to current theory of mind research, young children have been characterized as having little or no awareness of their mental activity. This conclusion was reexamined by assessing children's conscious access to visual imagery. Four-year-olds, 6-year-olds, and adults were given a mental rotation task in the form of a computer game, but with no instructions to use mental rotation and no other references to mental activity. During the task, participants were asked to explain how they made their judgments. Reaction time patterns and verbal reports revealed that 6-year-olds were comparable to adults both in their spontaneous use and subjective awareness of mental rotation. Four-year-olds who referred to mental activity to explain their performance had reaction time and error patterns consistent with mental rotation; 4-year-olds who did not refer to mental activity responded randomly. A second study with 5-year-olds produced similar results. This research demonstrates that conscious access to at least 1 type of thinking is present earlier than previously recognized. It also helps to clarify the conditions under which young children will and will not notice and report their mental activity. These findings have implications for competing accounts of children's developing understanding of the mind and for the "imagery debate." 相似文献
20.
J Becker 《Child development》1989,60(5):1147-1157
Preschoolers' use of number words to denote one-to-one correspondence was assessed by 2 tasks. In the matching task, the children matched 2 sets to determine whether they could be put in one-to-one correspondence and then judged whether the same number word should be used to denote both sets. In the counting task, the children counted 2 sets and used the final number words of the count to determine whether the sets could be put in one-to-one correspondence. Most 4-year-olds and some 3 1/2-year-olds use number words to denote one-to-one correspondence in each of these tasks. These findings are related to previous research. 相似文献