Social information processing in preschool children: Relations to sociodemographic risk and problem behavior

Using a multicomponent, process-oriented approach, the links between social information processing during the preschool years and (a) sociodemographic risk and (b) behavior problems in preschool were examined in a community sample of 196 children. Findings provided support for our initial hypotheses that aspects of social information processing in preschool are related to both sociodemographic risk and behavior problems in preschool. Response evaluation and in particular the positive evaluation of an aggressive response were related to both sociodemographic risk and children’s aggressive behavior and partially mediated the links between sociodemographic risk and aggressive behavior in preschool.     

Electroencephalographic responses to photographs: a case study of three women with distinct adult attachment interview classifications

This preliminary study explored whether neurophysiological responses to visual stimuli, including attachment-related pictures, differed based on attachment status. Along with self-reported valence ratings and reaction times, recorded electroencephalographic (EEG) responses to a total of 100 images, 25 each of Positive, Negative, Neutral, and Personal (each participant's parents and child), were analyzed within and among three mothers with three attachment statuses (Dismissing, Preoccupied, and Secure), as judged by the Adult Attachment Interview (AAI). All three mothers gave their highest pleasantness ratings for Personal photographs. However, differences emerged when cross-region Alpha2 activation patterns in response to each picture type were compared amongst attachment categories. Alpha2 activation recorded during viewing of the participants' children's photographs was similar to viewing Negative pictures for mothers with insecure (Dismissing and Preoccupied) status; whereas the Alpha2 activation of the mother with Secure status towards photographs of her child was similar to Positive pictures. Different patterns of hemispheric asymmetry in Beta1 frequency when processing different picture types were also found. The mother with Dismissing status showed significantly stronger left-hemisphere Beta1 activation across all image types. The Preoccupied mother showed significantly stronger right-hemisphere Beta1 activation for all but the Neutral images, during which activation did not differ between the two hemispheres. The mother with Secure status showed significantly stronger Beta1 activation in the left hemisphere for all but parental Personal photos, during which activation did not differ between the two hemispheres. Implications from the current findings and future research possibilities are discussed.     

By any means necessary: the effects of regulatory focus and moral conviction on hostile and benevolent forms of collective action

In two studies, we investigate the effect of individuals' promotion and prevention focus on engagement in collective action. We show that responding to group-based disadvantage out of a sense of moral conviction motivates prevention-oriented- but not promotion-oriented- individuals to engage in collective action. Furthermore, holding such strong moral convictions about the fair treatment of their group causes the prevention-oriented to disregard societal rules against hostile forms of collective action (i.e., forms of action that are aimed at harming the interests of those held responsible for the group's disadvantage). Study 1 showed that prevention-oriented individuals, but not promotion-oriented individuals, with a strong moral conviction about the fair treatment of their group are willing to support both hostile and benevolent forms of collective action. Study 2 replicated this effect and showed that for prevention-oriented individuals but not for promotion-oriented individuals, holding a strong moral conviction about the fair treatment of the group overrides moral objections to hostile forms of collective action in the decision to support these forms of action.     

Young adult female fragile X premutation carriers show age- and genetically-modulated cognitive impairments

The high frequency of the fragile X premutation in the general population and its emerging neurocognitive implications highlight the need to investigate the effects of the premutation on lifespan cognitive development. Until recently, cognitive function in fragile X premutation carriers (fXPCs) was presumed to be unaffected by the mutation. Here we show that young adult female fXPCs show subtle, yet significant, age- and FMR1 gene mutation-modulated cognitive impairments as tested by a quantitative magnitude comparison task. Our results begin to define the neurocognitive endophenotype associated with the premutation in adults, who are at risk for developing a neurodegenerative disorder associated with the fragile X premutation. Results from the present study may potentially be applied toward the design of early interventions wherein we might be able to target premutation carriers most at risk for degeneration for preventive treatment.     

The detrimental effects of power on confidence, advice taking, and accuracy

Incorporating input from others can enhance decision quality, yet often people do not effectively utilize advice. We propose that greater power increases the propensity to discount advice, and that a key mechanism explaining this effect is elevated confidence in one’s judgment. We investigate the relationships across four studies: a field survey where working professionals rated their own power and confidence and were rated by coworkers on their level of advice taking; an advice taking task where power and confidence were self-reported; and two advice taking experiments where power was manipulated. Results consistently showed a negative relationship between power and advice taking, and evidence of mediation through confidence. The fourth study also revealed that higher power participants were less accurate in their final judgments. Power can thus exacerbate the tendency for people to overweight their own initial judgment, such that the most powerful decision makers can also be the least accurate.     

Modeling Statistical Insensitivity: Sources of Suboptimal Behavior

Children acquiring languages with noun classes (grammatical gender) have ample statistical information available that characterizes the distribution of nouns into these classes, but their use of this information to classify novel nouns differs from the predictions made by an optimal Bayesian classifier. We use rational analysis to investigate the hypothesis that children are classifying nouns optimally with respect to a distribution that does not match the surface distribution of statistical features in their input. We propose three ways in which children's apparent statistical insensitivity might arise, and find that all three provide ways to account for the difference between children's behavior and the optimal classifier. A fourth model combines two of these proposals and finds that children's insensitivity is best modeled as a bias to ignore certain features during classification, rather than an inability to encode those features during learning. These results provide insight into children's developing knowledge of noun classes and highlight the complex ways in which statistical information from the input interacts with children's learning processes.     

The Effects of Oral and Silent Reading on Reading Comprehension

This study examined the effects of reading mode (oral and silent) and text genre (narrative and expository) on fourth graders’ reading comprehension. While controlling for prior reading ability of 48 participants, we measured comprehension. Using a repeated measured design, data were analyzed using analysis of covariance, paired t-tests, and correlational statistics. Results revealed that silent reading was stronger for narrative passages in retell measures, but there was no difference for comprehension questions. The expository passages revealed no difference between the reading modes. Comprehension of narrative texts was consistently stronger than expository texts in both silent and oral reading.