Organizing factors in remembering and comprehending: A developmental analysis

This report describes an experiment that emphasizes: (a) the influence of organizing factors in remembering and comprehending and (b) the development of those skills that are related to the ability to organize. The analysis of the data was based on a theory of comprehension that emphasized a pair of interrelated processes, one providing for the construction of a schema or plan and the other for the semantic integration of items into the evolving plan. As predicted, adults perform more accurately with the paragraphs vs. the scrambled paragraphs and with the word lists as compared to the scrambled word lists. Accuracy with unrelated words is generally greater than with related words, a finding that is consistent with a reconstructive theory of remembering. The pattern of results for the 5th grade Ss is quite different: they perform more accurately with the scrambled paragraphs than with the paragraphs and somewhat more accurately with scrambled word lists rather than with word lists. These results were interpreted as evidence for a problem of control for the 5th grade Ss. We have assumed that the ability to process certain forms of information depends upon the ability to select and maintain an appropriate focus of attention. The results for these younger Ss suggest that their ability to file information into a schema as a filing system is compromised by the need to change or modify the filing system.     

Emotion and object processing in Parkinson’s disease

The neuropsychological literature on the processing of emotions in Parkinson’s disease (PD) reveals conflicting evidence about the role of the basal ganglia in the recognition of facial emotions. Hence, the present study had two objectives. One was to determine the extent to which the visual processing of emotions and objects differs in PD. The other was to assess the impact of cognitive load on the processing of these types of information. Thirty-one patients with idiopathic PD (IPD) under dopamine replacement therapy (DRT) were compared to 30 control subjects on emotion and object recognition tasks. Recognition of objects was more accurate and faster than recognition of facial expressions of emotion, for both groups of subjects. In a second experiment using an N-back procedure with the same stimuli—a more demanding task with a higher cognitive load—patients with IPD were as accurate as control subjects in detecting the correct sequential presentation of stimuli, but were much slower in their decision responses. This indicates that IPD patients under DRT are not impaired in encoding emotion or object information, but that they have difficulty with the processing demands of the N-back task. Thus, patients with IPD appear to be more sensitive to cognitive load than to type of information, whether facial emotions or objects. In this perspective, one must consider that a deafferented dopaminergic system has problems processing more complex information before one can posit the existence of deficits affecting a specific type of information.     

The development of intersensory temporal perception: an epigenetic systems/limitations view

Several theories have stressed the importance of intersensory integration for development but have not identified specific underlying integration mechanisms. The author reviews and synthesizes current knowledge about the development of intersensory temporal perception and offers a theoretical model based on epigenetic systems theory, proposing that responsiveness to 4 basic features of multimodal temporal experience--temporal synchrony, duration, temporal rate, and rhythm--emerges in a sequential, hierarchical fashion. The model postulates that initial developmental limitations make intersensory synchrony the basis for the integration of intersensory temporal relations and that the emergence of responsiveness to the other, increasingly more complex, temporal relations occurs in a hierarchical, sequential fashion by building on the previously acquired intersensory temporal processing skills.     

Children's decision strategies and their adaptation to task characteristics

Recent research has established decision making as an important type of strategic problem solving. From this perspective, the present paper examines strategic decision behavior in children and, in particular, the ability to adapt decision strategies to task characteristics. Twelve-year-olds' strategies were identified through analyses of information search patterns with different-sized matrices of information. Using a similar procedure, Payne (1976, Organizational Behavior and Human Performance, 16, 366–387) found that adults shifted to more efficient (but less “optimal”) strategies as task complexity increased. The present study indicates that, by 12 years of age, children understand many of the basic concepts of strategic decision making, such as compensation and elimination, and, like adults, they modify their strategies appropriately in response to complexity. However, their behavior differs from that reported for adults in that the distinctions among specific decision strategies are not clear cut, and there is frequent use of less demanding, cost-cutting strategies even with smaller decision tasks. Memory capacity and topic interest also affect decision strategy. The results support the feasibility of further developmental study of decision strategies. Analytical techniques developed here for use with children may profitably be applied in studies with adults as well.     

Attenuated audiovisual integration in middle-aged adults in a discrimination task

Numerous studies have focused on the diversity of audiovisual integration between younger and older adults. However, consecutive trends in audiovisual integration throughout life are still unclear. In the present study, to clarify audiovisual integration characteristics in middle-aged adults, we instructed younger and middle-aged adults to conduct an auditory/visual stimuli discrimination experiment. Randomized streams of unimodal auditory (A), unimodal visual (V) or audiovisual stimuli were presented on the left or right hemispace of the central fixation point, and subjects were instructed to respond to the target stimuli rapidly and accurately. Our results demonstrated that the responses of middle-aged adults to all unimodal and bimodal stimuli were significantly slower than those of younger adults (p < 0.05). Audiovisual integration was markedly delayed (onset time 360 ms) and weaker (peak 3.97%) in middle-aged adults than in younger adults (onset time 260 ms, peak 11.86%). The results suggested that audiovisual integration was attenuated in middle-aged adults and further confirmed age-related decline in information processing.     

Reading in healthy ageing: the influence of information structuring in sentences

In three experiments, we investigated the cognitive effects of linguistic prominence to establish whether focus plays a similar or different role in modulating language processing in healthy ageing. Information structuring through the use of cleft sentences is known to increase the processing efficiency of anaphoric references to elements contained with a marked focus structure. It also protects these elements from becoming suppressed in the wake of subsequent information, suggesting selective mechanisms of enhancement and suppression. In Experiment 1 (using self-paced reading), we found that focus enhanced (faster) integration for anaphors referring to words contained within the scope of focus; but suppressed (slower) integration for anaphors to words contained outside of the scope of focus; and in some cases, the effects were larger in older adults. In Experiment 2 (using change detection), we showed that older adults relied more on the linguistic structure to enhance change detection when the changed word was in focus. In Experiment 3 (using delayed probe recognition and eye-tracking), we found that older adults recognized probes more accurately when they were made to elements within the scope of focus than when they were outside the scope of focus. These results indicate that older adults' ability to selectively attend or suppress concepts in a marked focus structure is preserved.     

Trust recovery following voluntary or forced financial compensations in the trust game: The role of trait forgiveness

One of the major challenges that actors in economic exchange relations face today concerns dealing with defection and overcoming the erosion of trust and cooperation that may result from a transgression. As transgressions in these relations usually entail a monetary loss for the victim, a common restorative approach involves providing a financial compensation to the victim. This research examines whether compensations that were provided voluntarily (rather than forced) would promote more trust among victims. In contrast to standard economic theory, we predict that individual differences exist that determine the degree to which victims are susceptible towards information about how the financial compensation is delivered in their decision to trust and cooperate again. Experimental data from a trust game confirmed our hypotheses by showing that whereas receiving a voluntary compensation from the transgressor communicates more repentance to victims than when this compensation was imposed, particularly people with a low tendency to forgive discount this repentance in their decision to trust again.     

Information processing and human sequential predictive behaviour

Human sequential predictive behaviour is analysed in relation to information theory and information processing theory. The problem consists of the sequential prediction of stochastic-ergodic series of symbols. These sequences are described in terms of information theory (objective structure of the task) and the problem solving process in terms of information processing theory (problem space). The predictions of the behaviour of Ss, deduced from task environment and problem space, are confirmed by statistical analyses of the observed experimental behaviour of Ss. The necessity of further research on this and related problems is emphasized.     

Perceptual independence of pitch and loudness in a signal detection experiment: A processing model for 2ATFC (21FC) experiments

The two-alternative temporal forced choice (2ATFC) experiment is used to measure the relative detectabilities of a frequency change, an amplitude increase, or both together. Subjects’ performance is best when both (redundant) cues are available. This improvement is fit better by a decision threshold model than by an information integration model. Since decision processes that can lead to the decision threshold prediction in (2ATFC) experiments are not obvious, an information processing model which does is proposed. The model makes additional predictions which fit the results of an experiment which sometimes deletes information from the first or the second observation interval. The model is not consistent with the signal detection theory interpretation of the 2ATFC experiment, and these results call into question that interpretation. It is concluded that pitch and loudness are perceptually independent for the 2ATFC experiment.     

Altered behavioral and neural responsiveness to counterfactual gains in the elderly

Counterfactual information processing refers to the consideration of events that did not occur in comparison to those actually experienced, in order to determine optimal actions, and can be formulated as computational learning signals, referred to as fictive prediction errors. Decision making and the neural circuitry for counterfactual processing are altered in healthy elderly adults. This experiment investigated age differences in neural systems for decision making with knowledge of counterfactual outcomes. Two groups of healthy adult participants, young (N = 30; ages 19–30 years) and elderly (N = 19; ages 65–80 years), were scanned with fMRI during 240 trials of a strategic sequential investment task in which a particular strategy of differentially weighting counterfactual gains and losses during valuation is associated with more optimal performance. Elderly participants earned significantly less than young adults, differently weighted counterfactual consequences and exploited task knowledge, and exhibited altered activity in a fronto-striatal circuit while making choices, compared to young adults. The degree to which task knowledge was exploited was positively correlated with modulation of neural activity by expected value in the vmPFC for young adults, but not in the elderly. These findings demonstrate that elderly participants’ poor task performance may be related to different counterfactual processing.     

听觉障碍对聋人视觉功能影响的理论之争：缺陷还是补偿？

听觉通道受损,是否会影响聋人的视觉功能？有三种理论对此做出了解释。缺陷理论：聋人视觉功能存在缺陷,包括听觉脚手架假说和劳动分工假说。补偿理论：聋人视觉功能会表现出增强,包括响应增强假说、知觉增强假说、超通道功能假说和背侧通路假说。整合理论：聋人视觉功能既可能表现为缺陷,也可能表现为增强,与实验任务和被试年龄有关。本文评述了听觉障碍对聋人视觉功能影响的三种理论,并对其今后的发展趋势进行了展望。     

Information selectivity in decision making by younger and older adults

Past research has demonstrated that older adults are more likely than younger adults to exhibit information selectivity in decision making. Two alternative explanations have been proposed to account for this age difference. One explanation attributes the increase in information selectivity to older adults' reliance on prior knowledge, whereas the other explanation suggests that it reflects reduced information processing capacity. The aim of this research was to explore the latter explanation by controlling for experiential factors and varying the cognitive demands involved in decision making. Specifically, participants were faced with unfamiliar decision problems, and had to base their decisions on the available information in order to reach a desired goal. In Experiment 1 younger and older participants were required to play a game involving chance. The outcome payoff was varied between three conditions (approach, avoidance, and control). The results indicated that both the younger and the older participants based their decisions on payoff, though the older participants did so to a lesser extent. In Experiment 2 younger and older participants performed a similar decision task but with higher cognitive demands. Specifically, the decision‐making task included two dimensions of information, outcome probability and outcome payoff. The results showed that the younger participants based their decisions on probability and payoff whereas the older participants based their decisions on probability alone. In Experiment 3 younger and older participants made decisions in a sale context and received instructional cue to incorporate payoff information in their decisions. As before, the younger participants utilized probability and payoff, whereas the older participants based their decisions only on probability information. The findings are discussed in terms of age differences in information‐processing capacity, metacognition, motivation, and goal‐setting.     

Visual size perception and haptic calibration during development

It is still unclear how the visual system perceives accurately the size of objects at different distances. One suggestion, dating back to Berkeley’s famous essay, is that vision is calibrated by touch. If so, we may expect different mechanisms involved for near, reachable distances and far, unreachable distances. To study how the haptic system calibrates vision we measured size constancy in children (from 6 to 16 years of age) and adults, at various distances. At all ages, accuracy of the visual size perception changes with distance, and is almost veridical inside the haptic workspace, in agreement with the idea that the haptic system acts to calibrate visual size perception. Outside this space, systematic errors occurred, which varied with age. Adults tended to overestimate visual size of distant objects (over‐compensation for distance), while children younger than 14 underestimated their size (under‐compensation). At 16 years of age there seemed to be a transition point, with veridical perception of distant objects. When young subjects were allowed to touch the object inside the haptic workspace, the visual biases disappeared, while older subjects showed multisensory integration. All results are consistent with the idea that the haptic system can be used to calibrate visual size perception during development, more effectively within than outside the haptic workspace, and that the calibration mechanisms are different in children than in adults.     

高功能孤独症者非字面语义理解缺陷：隐喻视角的ERP研究

研究采用事件相关电位技术从隐喻语义理解角度考察了高功能孤独症成人非字面语义理解中的行为特点及脑半球参与模式。行为结果显示：高功能孤独症成人对新异隐喻句的反应时最长,两类隐喻句的反应时均长于普通成人,但错误率上两组被试间无差异。脑电结果显示：高功能孤独症组对新异隐喻句的N400波幅最大,未出现半球偏侧化现象,传统隐喻句在左半球的N400波幅大于右半球,两类隐喻句的N400波幅均大于正常被试。结论：高功能孤独症成人具备隐喻理解能力,并对新异隐喻的理解做出更多努力,但右脑功能异常仍旧存在,左右半球在总体功能或神经联通性上仍旧弱于常人。     

The Geotropic Reaction of Newborn Puppies

Male and female decision time with parallel and sequential processing problems, under control, distraction, and irrelevant cue conditions were studied. Males were superior in all sequential processing control conditions, and in all parallel processing control conditions. For both sexes processing was most efficient in control conditions, without distractions or irrelevant cues. Females showed less of a decline in efficiency than males when irrelevant visual cues were present in the sequential processing condition.     

The process of selective exposure: Why confirmatory information search weakens over time

The present research investigated whether the tendency to prefer decision-consistent to decision-inconsistent information after making a preliminary choice would vary during the sequential process of searching for additional pieces of decision-relevant information. Specifically, it was tested whether decision makers would be more confirmatory in their information evaluation and search at the commencement rather than end of an information search process. In fact, five studies revealed that participants exhibited stronger confirmatory tendencies in both information evaluation (Studies 2 and 5) and search (Studies 1, 3, and 4) immediately after making a preliminary decision compared to during the later stages of an information search process. With regard to the underlying mechanism, results further revealed that individuals appear to be more motivated to detect the best decision alternative at the beginning (as opposed to the end) of an information search process, which leads to increases in confirmatory information processing during these stages.     

Information seeking on Bayesian conditional probability problems: A fuzzy-trace theory account

Recently, the ‘heuristics and biases’ approach to the study of decision making has been criticized, with a call for better integrated theory. Three experiments stemming from fuzzy-trace theory addressed information seeking on probability problems, and the cognitive representation of hit-rates, base-rates, and the contrapositive. As predicted by the fuzzy-trace principle of ‘denominator neglect’, many subjects exhibited ‘conversion errors’, confusing the hit-rate, P(A|B), with the answer, P(B|A). These subjects sought base-rates less often than other subjects. On causal problems, more subjects correctly represented base-rates, sought base-rates more often, and produced more accurate estimates than on non-causal problems. Subjects tutored on the meaning of the hit-rate sought the base-rate more often, and were more accurate than control subjects. Results are explained by fuzzy-trace theory principles of gist extraction, fuzzy processing preference, denominator neglect, and output interference.     

Levels of theory‐of‐mind reasoning in competitive games

The literature on recursive theory of mind (TOM) reasoning in interactive decision making (reasoning of the type “I think that you think that I think…”) has been pessimistic, suggesting that adults attribute to others levels of reasoning that are low and slow to increase with learning. In four experiments with college‐age adults playing sequential games, we examined whether choices and predictions were consistent with believing that others pursue their immediate self‐interest, or with believing that others reason through their own decision making, with fixed‐sum games that were simpler and more competitive. This manipulation led to higher‐level default TOM reasoning; indeed, reasoning against a lower‐level opponent was frequently consistent with assuming the opponent's reasoning to be higher‐level, leading to sub‐optimal choices. We conclude that TOM reasoning is not of a low level in all game settings; rather, individuals may display effective TOM reasoning, reflecting realistic assumptions about their opponents, in competitive and relatively simple games. Copyright © 2010 John Wiley & Sons, Ltd.