Do we perceive a flattened world on the monitor screen?

The current model of three-dimensional perception hypothesizes that the brain integrates the depth cues in a statistically optimal fashion through a weighted linear combination with weights proportional to the reliabilities obtained for each cue in isolation (Landy, Maloney, Johnston, & Young, 1995). Even though many investigations support such theoretical framework, some recent empirical findings are at odds with this view (e.g., Domini, Caudek, & Tassinari, 2006). Failures of linear cue integration have been attributed to cue-conflict and to unmodelled cues to flatness present in computer-generated displays. We describe two cue-combination experiments designed to test the integration of stereo and motion cues, in the presence of consistent or conflicting blur and accommodation information (i.e., when flatness cues are either absent, with physical stimuli, or present, with computer-generated displays). In both conditions, we replicated the results of Domini et al. (2006): The amount of perceived depth increased as more cues were available, also producing an over-estimation of depth in some conditions. These results can be explained by the Intrinsic Constraint model, but not by linear cue combination.     

Ambiguous figure perception and theory of mind understanding in children with autistic spectrum disorders

Researchers in early social‐cognition have found that the ability to reverse an ambiguous figure is correlated with success on theory of mind tasks (e.g. Gopnik & Rosati, 2001 ). The present experiment examined children with autistic spectrum disorders (ASD) without mental delay to see whether a similar relationship existed. Ropar, Mitchell, and Ackroyd (2003) demonstrated that children with ASD with mental delay were impaired on theory of mind tasks, but were as likely as mentally delayed controls to generate both interpretations of an ambiguous figure when informed of its ambiguity. The present study replicated this finding on children with ASD without mental delay. However, overall perception of ambiguous figures was different. These children were less likely to spontaneously generate both interpretations of the figure, and more likely to perseverate on a single interpretation than the comparison children. Like Ropar et al., we found no correlation between theory of mind and informed reversals, but spontaneous reversals were correlated with performance on an advanced theory of mind task. These data suggest that reversals of ambiguous figures are linked to higher‐level representational abilities, which might also be involved in social functioning, and impaired in children with ASD.     

Opening the cuebox: The information children and young adults generate and rely on when making inferences from memory

We used a cue‐generation and a cue‐selection paradigm to investigate the cues children (9‐ to 12‐year‐olds) and young adults (17‐year‐olds) generate and select for a range of inferences from memory. We found that children generated more cues than young adults, who, when asked why they did not generate some particular cues, responded that they did not consider them relevant for the task at hand. On average, the cues generated by children were more perceptual but as informative as the cues generated by young adults. When asked to select the most informative of two cues, both children and young adults tended to choose a hidden (i.e., not perceptual) cue. Our results suggest a developmental change in the cuebox (i.e., the set of cues used to make inferences from memory): New cues are added to the cuebox as more cues are learned, and some old, perceptual cues, although informative, are replaced with hidden cues, which, by both children and young adults, are generally assumed to be more informative than perceptual cues.     

Ambiguous-cue learning in preschool children: A test of the dimensional characteristics of task stimuli

Sixteen preschool children were administered a two-choice discrimination problem consisting of three stimulus compounds: the consistently rewarded stimulus, the consistently nonrewarded stimulus, and the ambiguous stimulus which was nonrewarded when paired with the positive, but rewarded when paired with the negative. When both pair of stimuli, positive-ambiguous and negative-ambiguous, were presented together the subject was required either to choose or to avoid the ambiguous stimulus depending upon the stimulus with which it was paired. In Experiment 1, when each of three stimuli (positive, negative, ambiguous) varied along one nonspatial cue dimension (color), performance was better on negative-ambiguous trials than positive-ambiguous trials. In Experiment 2, when the positive and negative stimuli varied along three nonspatial cue dimensions (colors and form) and the ambiguous stimulus varied along one of these dimensions (color), superior positive-ambiguous over negative-ambiguous performance was obtained. These findings complement those reported for other subjects and confirm Berch's (D. B. Berch, Learning and Motivation, 1974, 5, 135–148) predictions regarding use of differential numbers of cue dimensions.     

Remindings influence the interpretation of ambiguous stimuli

Remindings—stimulus-guided retrievals of prior events—may help us interpret ambiguous events by linking the current situation to relevant prior experiences. Evidence suggests that remindings play an important role in interpreting complex ambiguous stimuli (Ross & Bradshaw Memory & Cognition, 22, 591–605, 1994); here, we evaluate whether remindings will influence word interpretation and memory in a new paradigm. Learners studied words on distinct visual backgrounds and generated a sentence for each word. Homographs were preceded by a biasing cue on the same background three items earlier, preceded by a biasing cue on a different background three items earlier, or followed by a biasing cue on the same background three items later. When biasing cues preceded the homographs on the same backgrounds as the homographs, the meanings of the homographs in learner-generated sentences were consistent with the biasing cues more often than in the other two conditions. These results show that remindings can influence word interpretation. In addition, later memory for the homographs and cues was greater when the meaning of the homograph in the sentence was consistent with the earlier biasing cue, suggesting that remindings enhanced mnemonic performance. Remindings play an important role in how we interpret ambiguous stimuli and enhance memory for the involved material.     

The effect of cue Relevance,Ambiguity, and self-reported hostility on tat responses

The interaction of cue relevance and ambiguity was studied. Ss high or low in self-reported hostility were administered 8 T A T cards, half of which were high in hostility cue relevance, half low. Half of each subset, in turn, was high in ambiguity, half low. Highly relevant cards tended to elicit more aggressive content than low relevant cards, and stories to ambiguous cards tended to contain more aggressive themes than unambiguous ones, independent of hostility relevance. Hostile Ss tended to be best discriminated from non-hostile Ss on highly relevant cards, where they responded with more aggressive themes. Results were contrasted with previous findings and it was concluded that consistent with findings where hostility is defined by observation or arousal, highly relevant cues are most sensitive to hostility level. While greater expression of negative content, increments in ambiguity did not add to the sensitivity of the stimuli.     

Individual differences in using geometric and featural cues to maintain spatial orientation: Cue quantity and cue ambiguity are more important than cue type

Two experiments explored the role of environmental cues in maintaining spatial orientation (sense of selflocation and direction) during locomotion. Of particular interest was the importance of geometric cues (provided by environmental surfaces) and featural cues (nongeometric properties provided by striped walls) in maintaining spatial orientation. Participants performed a spatial updating task within virtual environments containing geometric or featural cues that were ambiguous or unambiguous indicators of self-location and direction. Cue type (geometric or featural) did not affect performance, but the number and ambiguity of environmental cues did. Gender differences, interpreted as a proxy for individual differences in spatial ability and/or experience, highlight the interaction between cue quantity and ambiguity. When environmental cues were ambiguous, men stayed oriented with either one or two cues, whereas women stayed oriented only with two. When environmental cues were unambiguous, women stayed oriented with one cue.     

Recognition during recall failure: Semantic feature matching as a mechanism for recognition of semantic cues when recall fails

Research suggests that a feature-matching process underlies cue familiarity-detection when cued recall with graphemic cues fails. When a test cue (e.g., potchbork) overlaps in graphemic features with multiple unrecalled studied items (e.g., patchwork, pitchfork, pocketbook, pullcork), higher cue familiarity ratings are given during recall failure of all of the targets than when the cue overlaps in graphemic features with only one studied target and that target fails to be recalled (e.g., patchwork). The present study used semantic feature production norms (McRae et al., Behavior Research Methods, Instruments, & Computers, 37, 547–559, 2005) to examine whether the same holds true when the cues are semantic in nature (e.g., jaguar is used to cue cheetah). Indeed, test cues (e.g., cedar) that overlapped in semantic features (e.g., a_tree, has_bark, etc.) with four unretrieved studied items (e.g., birch, oak, pine, willow) received higher cue familiarity ratings during recall failure than test cues that overlapped in semantic features with only two (also unretrieved) studied items (e.g., birch, oak), which in turn received higher familiarity ratings during recall failure than cues that did not overlap in semantic features with any studied items. These findings suggest that the feature-matching theory of recognition during recall failure can accommodate recognition of semantic cues during recall failure, providing a potential mechanism for conceptually-based forms of cue recognition during target retrieval failure. They also provide converging evidence for the existence of the semantic features envisaged in feature-based models of semantic knowledge representation and for those more concretely specified by the production norms of McRae et al. (Behavior Research Methods, Instruments, & Computers, 37, 547–559, 2005).     

Functions of External Cues in Prospective Memory

Abstract

A simulation of an air traffic control task was the setting for an investigation of the functions of external cues in prospective memory. External cues can support the triggering of an action or memory for the content of the action. We focused on memory for the content, and manipulated the temporal characteristics of the external cue to disentangle two possible functions the cue can support: (1) an external cue visible during a retention interval could support rehearsal of the to-be-performed action; (2) an external cue visible at the end of a retention interval could support retrieval of the to-be-performed action. Two experiments were conducted that converge on the same conclusion: the primary function of an external cue is to support retrieval. Implications for the design of a computer interface to present prospective cues are discussed.     

It Takes Two To Tango: Understanding and Acquiring Symmetrical Verbs

Children's ability to understand symmetrical verbs was investigated, along with adults' use of linguistic and visual cues to learn novel symmetrical verbs. Symmetrical verbs encode a relationship r between two entities such that X r Y entails Y r X. In Experiment 1, sixteen children (mean age 4;8) acted out two types of sentences with symmetrical and asymmetrical verbs. Eight adult judges viewed videotapes of the children's performance and tried to guess what sentence type was being enacted. Judges' performance was predicted(p < .05) by the verb type, symmetrical or asymmetrical. In Experiment 2, seventy-two adult subjects received visual and linguistic cues to the meanings of novel verbs. Both cue types affected subjects' judgments about whether the new verbs were symmetrical or asymmetrical (p < .05).     

两种时空线索条件下表面颜色特征线索对客体保持的作用*

采用客体回溯范式,以客体预览利化效应(object specific previewing benefit, OSPB)作为指标,考察表面特征线索对客体保持的作用。实验1使用双向隧道创建时空线索不明确的条件,研究表面颜色特征线索的作用。实验2使用单向隧道使时空线索明确,研究表面颜色特征线索与时空线索一致、冲突情境下的客体保持。实验1和实验2均出现了OSPB效应,且实验2冲突情境的OSPB效应低于一致情境。研究结果表明在时空线索不明确的条件下,仅凭表面颜色特征线索就能实现客体保持;在时空线索明确的条件下,时空线索是客体保持的主要线索,同时表面颜色特征线索也起一定的作用。     

The effects of “effort after meaning” on recall: Differences in within- and between-subjects designs

In four experiments, we examined free recall of ambiguous sentences with or without corresponding cues to facilitate comprehension, using Auble and Franks’s (1978) paradigm to examine effort after meaning (Bartlett, 1932). The ambiguous sentences were studied without cues, with cues meaningfully embedded in them, with cues provided shortly before the sentence (precue), or with cues following the sentence after several seconds (delayed cue). When these conditions were manipulated within subjects, the process of cue integration in the pre- and delayed-cue conditions enhanced recall, relative to the no-cue and embedded-cue conditions. Furthermore, in a test condition in which subjects first attempted to recall the cues alone, recall was also best in the delayed-cue condition. The effects described above did not occur when the cue presentation conditions varied between subjects, and on a test of order reconstruction, there was even an advantage for sentences studied in the embedded-cue condition over those studied in the delayed-cue condition. The dissociative effects of experimental design on sentence recall and order reconstruction suggest that effort after meaning might enhance memory for study items at the cost of impairing memory for temporal order information.     

A Psychometric Study of 150 Adult Delinquents

Abstract

To test the hypothesis that cooperative and competitive behavior strategies affect attitudes toward success, 147 male and female adults (age range 16 to 51 years) wrote stories in response to a modification of Horner's (1972) success cue and completed a personality trait list for their cue figure. Subjects were given one of four cues that varied sex of cue figure (Anne vs. John) and behavioral strategy (cooperative vs. competitive). Both measures yielded differences as a function of the strategy variable, with significantly more positive stories written in response to the cooperative strategy cue than to the competitive strategy cue (p < .001), and significant differences between the strategy cues on 26 of 40 personality traits. Although sex differences were predicted, no differences were found as a function of sex of subject or sex of cue figure.     

Influence of Levels of Abstractness on Reasoning Ability

Judgment by students of faculty effectiveness have relied, for the most part, on subjectively expressed responses to a series of “effectiveness traits” (cues). Simple averaging schemes have summarized the aggregate judgments, often resulting in (a) treating all cues as if they were of equal importance, and (b) inattention to the effects or measurement of individual differences of judges.

Multiple regression was used in this study to derive (empirically) individual cue utilization patterns (i.e., weights) for 10 effectiveness traits. Ss were compared to their subjectively expressed judgment scheme. Results indicate that Ss were moderately successful in expressing their actual cue utilization patterns; however, different judgment schemes were clearly observed.     

The spatial correspondence hypothesis and orienting in response to central and peripheral spatial cues

Two experiments examined visual orienting in response to spatial precues. In Experiment 1A participants were informed that targets usually (p =.8) appeared on the same side as cues in a particular colour (e.g., red). Rapid orienting was observed, with both central and peripherally presented cues. In Experiment IB cue displays were spatially symmetric. Participants were informed that target location (left or right) was usually predicted (p =.8) by cue colour (red or green). Orienting effects were observed, but these were slower to develop and much weaker than in Experiment 1 A. In Experiment 2A and 2B the cue was a single, centrally presented letter. We compared effects of spatially symmetric (T, X, v, o) and asymmetric (d, b) letter cues. Validity effects were present for asymmetric cues, but entirely absent for symmetric cues. These finding are discussed in terms of Lambert and Duddy's (2002) proposal that spatial correspondence learning plays a critical role in spatial precueing. Implications of the results for the distinction between endogenous and exogenous orienting are also considered.     

The contextual change paradox is still unresolved: comment on Bouton, Nelson, and Rosas (1999)

According to the contextual change theory of memory loss, spontaneous forgetting reflects a retrieval impairment due to subtle and unprogrammed shifts in environmental cues over a retention interval. However, Riccio, Richardson, and Ebner (1984) noted an apparent paradox in this model; specifically, laboratory studies inducing explicit shifts in contextual cues found less disruption of performance as retention intervals increased. Bouton, Nelson, and Rosas (1999) critiqued several of the claims made by Riccio et al. and concluded that the contextual cue theory is still a valid account of spontaneous forgetting. In this comment, the authors address the 3 major criticisms offered by Bouton et al., point out an inconsistency in their argument, and conclude that the original paradox still poses problems for the contextual change theory of forgetting.     

Very clever homunculus: Compound stimulus strategies for the explicit task-cuing procedure

In two experiments, subjects were given arbitrary letter cues or meaningful word cues that specified the task to be performed on a subsequent target stimulus. Letter and word cues were presented in separate blocks. There were two cues of each type for each task. Three kinds of transitions separated tasks:cue repetitions, in which both the cue and the task repeated;task repetitions, in which the cue changed but the task repeated; andtask alternations, in which both the cue and the task changed. Responses were faster for cue than for task repetitions for both cue types. With word cues, task repetitions were not reliably faster than task alternations. With letter cues, task repetitions were reliably faster than task alternations in the first block but not in the second block. The results suggest that subjects responded to the compound of the cue and the target rather than switching task set between trials.     

The Boston Naming Test: Norm data and cue utilization in a sample of normal 6- and 7-year-old children

The object-naming abilities of 83 normal children were examined using the Boston Naming Test developed by E. Kaplan, H. Goodglass, and S. Weintraub (1976, The Boston Naming Test (experimental edition), unpublished test, Veterans Hospital, Boston, Massachusetts). There is currently a lack of available norms for this instrument, especially for populations of younger children. Cue utilization in this sample is explored and attention is focused upon possible gender differences in naming performance and cue strategies. Seven summary scores derived from the test are presented in this report. Results indicate that the Boston Naming Test can discriminate within a normal population sample of young children and provides a relatively normal distribution for six of seven derived scores. Boys were found to have a significantly greater number of items correctly named but no gender differences in cue utilization were evident. A major proportion of the children in this sample of 6- and 7-year-olds used phonological cues almost exclusively, rather than semantic cues also provided. Cue use was not related to age or spontaneously given responses, and none of the children were found to be highly proficient at using both types of cues.     

Testing Multicultural Robustness of the Child Behavior Checklist in a National Epidemiological Sample in Uruguay

Comparisons of Child Behavior Checklist (CBCL) scores from 31 societies (Rescorla et al. Journal of Emotional and Behavioral Disorders 15:13–142 2007) supported the instrument’s multicultural robustness, but none of these societies was in South America. The present study tested the multicultural robustness of the 2001 CBCL using data from a national epidemiological survey in Uruguay. Participants were 1,374 6- to 11-year-olds recruited through 65 schools nationwide; 1,098 (80%) had received no mental health or special education services in the past year (non-referred group), whereas 276 (referred group) had been referred for mental health services, had repeated ≥2 grades, or had significant developmental disabilities. Mean item ratings, factor structure, and scale internal consistencies were very similar to findings reported by Rescorla et al. (Journal of Emotional and Behavioral Disorders 15:13–142 2007) and Ivanova et al. (Journal of Clinical Child and Adoloescent Psychology 36: 405–417 2007). Children from low SES school environments obtained higher problem scores, especially in the referred group. Gender, age, and referral status effects paralleled those in the U.S. Non-referred children obtained somewhat higher mean problem scores in Uruguay than in the U.S., but mean score differences between non-referred and referred children were smaller in Uruguay than the U.S. Findings supporting the CBCL’s multicultural robustness in a South American country extend the generalizability of findings reported by Rescorla et al. (Journal of Emotional and Behavioral Disorders 15:13–142 2007) for 31 societies.