The Role of Probability and Intentionality in Preschoolers' Causal Generalizations

Three experiments examined whether preschoolers recognize that the causal properties of objects generalize to new members of the same set given either deterministic or probabilistic data. Experiment 1 found that 3- and 4-year-olds were able to make such a generalization given deterministic data but were at chance when they observed probabilistic information. Five-year-olds reliably generalized in both situations. Experiment 2 found that 4-year-olds could make some probabilistic inferences, particularly when comparing sets that had no efficacy with sets in which some members had efficacy. Children had some difficulty discriminating between completely effective sets and stochastic ones. Experiment 3 examined whether 3- and 4-year-olds could reason about probabilistic data when provided with information about the experimenter's beliefs about causal outcomes. Children who were more successful on standard false-belief measures were more likely to respond as if the data were deterministic. These data suggest that children's probabilistic inferences develop into early elementary school, but preschoolers might have some understanding of probability when reasoning about causal generalization.     

How Children Learn the Ins and Outs: A Training Study of Toddlers' Categorization of Animals

Young children are able to categorize animals on the basis of unobservable features such as shared biological properties (e.g., bones). For the most part, children learn about these properties through explicit verbalizations from others. The present study examined how such input impacts children's learning about the properties of categories. In a training study with thirty-six 2.5-year-olds (M_age = 2;9), we tested the prediction that a relatively small amount of input highlighting the importance of unobservable properties would lead to a gradual shift in children's use of these properties for categorization. Children with no initial categorization bias were trained to categorize either on the basis of shared unobservable properties or shared observable properties. During 3 days of training, children gradually developed a categorization bias in the direction of the property type for which they received training and sustained this bias more than a week after training. Also, a set of children who exhibited an initial perceptual bias showed an abrupt change in how they categorized after only 1 training session.     

Enhanced mental rotation ability in time-space synesthesia

Time-space synesthesia is a variant of sequence–space synesthesia and involves the involuntary association of months of the year with 2D and 3D spatial forms, such as arcs, circles, and ellipses. Previous studies have revealed conflicting results regarding the association between time-space synesthesia and enhanced spatial processing ability. Here, we tested 15 time-space synesthetes, and 15 non-synesthetic controls matched for age, education, and gender on standard tests of mental rotation ability, spatial working memory, and verbal working memory. Synesthetes performed better than controls on our test of mental rotation, but similarly to controls on tests of spatial and verbal working memory. Results support a dissociation between visuo-spatial imagery and spatial working memory capacity, and suggest time-space synesthesia is associated only with enhanced visuo-spatial imagery. These data are consistent with the time-space connectivity thesis that time-space synesthesia results from enhanced connectivity in the parietal lobe between regions supporting the representation of temporal sequences and those underlying visuo-spatial imagery.     

Negative valence can evoke a liberal response bias in syllogistic reasoning

Recently, studies have demonstrated that negative valence reduces the magnitude of the belief-bias effect in syllogistic reasoning. This effect has been localized in the reasoning stage, in the form of increased deliberation on trials where validity and conclusion believability are incongruent. Here, using signal detection theory, we show that the attenuation of belief bias observed when valence was negative can also be evoked by a liberal response bias at the decision stage. Indeed, when valence was negative participants adopted a more liberal criterion for judging syllogisms as “valid,” and were overconfident in their judgments. They also displayed less sensitivity in distinguishing between valid and invalid syllogisms. Our findings dovetail with recent evidence from memory research suggesting that negative valence can evoke a liberal response bias without improving performance. Our novel contribution is the demonstration that the attenuating effect of negative valence on belief bias can take multiples routes—by influencing the decision stage as was the case here, the reasoning stage as has been demonstrated elsewhere, and potentially both stages.     

Priming the mental time-line: effects of modality and processing mode

The notion of a mental time-line (i.e., past corresponds to left and future corresponds to right) supports the conceptual metaphor view assuming that abstract concepts like “time” are grounded in cognitively more accessible concepts like “space.” In five experiments, we further investigated the relationship between temporal and spatial representations and examined whether or not the spatial correspondents of time are unintentionally activated. We employed a priming paradigm, in which visual or auditory prime words (i.e., temporal adverbs such as yesterday, tomorrow) preceded a colored square. In all experiments, participants discriminated the color of this square by responding with the left or the right hand. Although the temporal reference of the priming adverb was task irrelevant in Experiment 1, visually presented primes facilitated responses to the square in correspondence with the direction of the mental time-line. This priming effect was absent in Experiments 2, 3, and 5, in which the primes were presented auditorily and the temporal reference of the words could be ignored. The effect, however, emerged when attention was oriented to the temporal content of the auditory prime words in Experiment 4. The results suggest that task demands differentially modulate the activation of the mental time-line within the visual and auditory modality and support a flexible association between conceptual codes.     

Test anxiety and metacognitive skillfulness: Availability versus production deficiencies

Abstract

This paper focuses on the role of metacognition in test anxiety. In two experiments, the metacognitive skillfulness of high vs. low test-anxious secondary school students was contrasted. Low test-anxious subjects exhibited a superior metacognitive skillfulness during math performance relative to high test-anxious subjects. Furthermore, differences in metacognitive skillfulness were performance related. In order to unravel causality in the relation between metacognition and test anxiety, two types of test-anxious students may be distinguished analogous to Naveh-Benjamin (1991). Type-1 students would lack metacognitive skills (availability deficiency), through which they experience failure and develop test anxiety. Type-2 students would experience task irrelevant thoughts, which causes cognitive interference with available metacognitive skills (production deficiency). Results of Study 1 reveal that metacognitive cueing may represent an adequate method for the identification of both types. Due to time-constraints, metacognitive cueing in Study 2 failed to do so.     

Going Home Again: Transitioning Youth to Families After Group Care Placement

This paper presents results from the transitioning youth to families intervention, which aimed to promote family care for youth served in group care programs in the child welfare system. The intervention was conducted in two counties in a Mid-Atlantic state. The effort encompassed administrative case review and family involvement meetings. We assessed the effect of the intervention in promoting placement in family settings within 12 months. We also explored other effects of the intervention identified by participants. Using propensity score matching with administrative data to compare one-year placement settings for the intervention counties and non-intervention counties, a higher rate of family reunification was identified for youth in the treatment counties. To provide a richer contextual understanding of the effects of the intervention, thematic analysis of open-ended comments from youth and caregiver participants was conducted. These resulting themes provided further understanding of the value of the intervention especially in the areas of planning for the transition, improving youth insight about placement options, and the importance of family involvement. Participants also made recommendations for how to enhance the intervention and promote the transition of youth from group care to family settings. Overall, the effect of the intervention in transitioning youth to family settings was nominal; however unanticipated benefits of engaging youth and family in the transition process were noted. From this evaluation, we provide suggestions for future research and the development of effort to transition youth from group care settings.     

Predictors of Differential Responding on a Sentence Completion Task in Traumatized Children

Information-processing theories posit that persons who have experienced trauma may have disturbed emotional processing and therefore exhibit an excess of negative responses to otherwise neutral cues. The role of this mechanism in traumatized children has yet to be fully investigated. This study examined the relationship of varied clinical characteristics and theoretically relevant moderating variables to increased trauma related responding on a non-idiographic sentence completion task. One hundred and eighty-nine children (ages 6–17) residing at a residential home between 1996 and 2011 who had experienced physical, emotional and/or sexual abuse were administered a sentence completion task and the Trauma Symptom Checklist for Children (TSCC) shortly after their admission. Three independent raters determined whether sentence completion responses were trauma related (TRR), non-trauma related, or ambiguous. Trauma related responses were then reviewed for either avoidant/denial style responding or loss related responding. The TSCC posttraumatic stress subscale (PTS) was the only subscale that was uniquely related to TRR. A significant interaction between abuse type and PTS was found with sexual abuse moderating the effect of PTS on TRR. Additionally, age at assessment was positively correlated with both TRR and loss related responding. Time since removal from home was negatively correlated with TRR. Gender differences were found for TRR and loss related responding. These findings highlight the empirical relevance of the sentence completion task in clinical research. Results are discussed in terms of their implications for research, assessment, and intervention.