Thursday, September 3, 2015

Institute of Human Development & Developmental Seminar Series Fall 2015

Talks are held in 3105 Tolman, 12:00-1:30 unless otherwise noted.

Sept. 14  Hyo Gweon, Assistant Professor of Psychology
               Stanford
To give a fish, or teach how to fish? Children's ability to decide what, how, and when to teach others
Abstract:
Humans are remarkable social learners. What we know about the world is heavily mediated by what others know about the world, and in turn, we affect what others know by sharing our own knowledge. Furthermore, as teachers, we have an intuitive grasp of how to help others learn about the world, selecting information that is relevant and helpful for others. What cognitive capacities underlie this ability to teach? Inspired by recent developmental work on children’s abilities as active interpreters of socially transmitted information, I will present a series of recent experiments that highlight children's abilities as active providers of information. These studies suggest that young children can tailor their teaching with respect to the learners’ goals, epistemic states, and expected utility. Even early in life, children can use their understanding of others to not only learn about the world around them, but also to help others learn about the world. These communicative interactions between a provider and a recipient of information provide deeply interesting opportunities to study the inferential processes and the representations that underlie our ability to acquire, share, and accumulate knowledge. 

Oct. 5  Katherine Graf Estes, Assistant Professor of Psychology
           UC Davis
Naturalistic challenges in statistical language learning


Oct. 19- Zi Lin Sim, Graduate Student
             UC Berkeley
Probabilistic Reasoning in ASD Children
Abstract:  Individuals with Autism Spectrum Disorders (ASD) often show difficulties in learning and generalization. Yet the capacity to make inductive generalizations is a hallmark of human learning. Previous research has demonstrated that typical children make such generalizations with much ease, and recent work with 6- to 12-month-old TD infants has revealed an early emergence of “intuitive statistics” (the idea that a random sample enables one to make predictions about a population and vice versa), which may enable children to engage in inductive learning within the first few years of life. As such, we hypothesized that autistic children would show weaknesses in probabilistic reasoning. In this talk, I discuss preliminary findings from two studies examining probabilistic reasoning in 7- to 12-year-old ASD and TD children (groups were matched in chronological age and IQ).


Oct. 26  Kathryn Humphreys, Postdoctoral Fellow
             Stanford University
 Understanding the impact on early life stress and child psychopathology 

Abstract: Substantial evidence indicates that experiences early in life have an outsized impact on later functioning. In particular, experiences of early adversity (e.g., abuse or neglect) longitudinally predict increased rates of psychopathology. In this talk, using data from children who experienced institutional (orphanage) rearing, a severe form of neglect, I will discuss: (1) the association between adverse early experience and psychopathology, (2) potential mechanisms by which stress gets "under the skin", and (3) factors that mitigate risk. In addition, I will provide evidence challenging traditional conceptualizations that developmental adaptions to early adversity are necessarily maladaptive.



Nov.2  Silvia Bunge, Professor of Psychology
            UC Berkeley
Eyetracking as a window into typical and atypical brain development  
My goal for this talk is to illustrate ways in which eyetracking can be used to gain insights into typical and atypical human brain development. I will present results from a recent study of cognitive control in children with Tourette Syndrome, in which we used pupillary and eyeblink measures to make inferences about neurochemistry as well as the timing of engagement of cognitive control. 




Nov. 9-  Michael Rutter, Professor of Developmental Psychopathology
             King's College, London


Nov.16- Azzurra Ruggieri, Postdoctoral Fellow
              UC Berkeley & Max Planck Institute, Germany
Ecological learning: How children adapt their active learning strategies to achieve efficiency
Abstract: This talk presents the results of recent studies investigating the effectiveness of toddlers and children's active learning strategies. In particular, it will focus on how children adapt their active learning strategies (e.g., question-asking, explorative behavior, free play...) in response to the task characteristics, to the statistical structure of the hypothesis space, and to
the feedback received. Such adaptiveness and flexibility is crucial to achieve efficiency in situations of uncertainty, when testing alternative hypotheses, making decisions, drawing causal inferences and solving categorization tasks.

Nov. 30   Dan Yurovsky, Postdoc Fellow in Psychology
                Stanford
Toward a coordination account of early word learning
Abstract: Early word learning is fast; children produce more than 1000 words by the time they are able to run. This rapid acquisition is puzzling because, while children show early competence in statistical learning, their performance is severely constrained by developing attentional and memory system. I propose resolve to this puzzle by reframing language learning as a coordination problem: Rapid language acquisition emerges from the tight calibration between children’s developing learning mechanisms and parental language input


Monday, May 4, 2015

May 11: Minxuan He

Psychological Consequences of Walking in Typically Developing Infants: Perception and Language 

The acquisition of new skills in human infants often changes the person-environment relationship, which provide opportunities for psychological development. Abundant evidence has come out from studies on prone locomotion, i.e. crawling onset and experience using converging research operations. However, as another major developmental transaction and motoric milestone, the effect of upright locomotion, namely walking is under investigated. In this talk, I will present my work on the link between upright locomotion in typically developing infants and changes in two crucial psychological abilities, i.e. visual proprioception and language acquisition.
 
3105 Tolman, 12:00-1:30pm.

Monday, April 27, 2015

May 4: Andrea Urqueta Alfaro

Joint Engagement and Attachment Patterns in Infants with Visual Impairments

This research reports on two early childhood developments, joint engagement and attachment patterns, and explores a possible relationship between the two in a sample of 20 infants with various levels of visual impairments, without additional disabilities. Joint engagement and security and organization of attachment patterns have been associated with positive developmental outcomes, such as better language and socio-emotional skills, better performance in theory of mind tests, and reduced risk for psychopathology. 


Study 1 focuses on joint engagement, that is, infants’ coordination of their attention between a social partner and an external focus of shared interest. Infants and their caregivers were videotaped during 30-minute free play sessions at their homes. Videos were coded to establish the duration of joint engagement episodes, and the overall time dyads participated in it. Results showed that all infants tested participated in joint engagement and that the percentage of time it represented of the 30-minute free play session significantly increased between ages 12 and 18 months. The average duration of single episodes of joint engagement increased but only approached significance. The level of each infants’ visual impairment was described as reductions from norms in visual acuity and contrast sensitivity as measured using both visual evoked potential and preferential looking techniques. Of the visual measurements, infants’ reduction in contrast sensitivity measured with preferential looking technique predicted infants’ percentage of time in joint engagement across ages. This finding supports the importance of considering contrast sensitivity levels, rather than only those of visual acuity, in research with this population.

Study 2 focuses on attachment patterns. Infants and their caregivers underwent the Strange Situation Paradigm with added instructions to accommodate for the perceptual needs of infants with visual impairments. Results showed that all but 1 of the 27 SSPs collected were deemed classifiable. Most attachment patterns were secure, ranging between 56% in the younger group of infants tested, and 70% in the older group. Attachments coded as disorganized ranged between 22% and 6% in the younger and older groups respectively. 

Study 3 explores the relationship between infants’ security of attachment and the percentage of time they participated in joint engagement with their caregivers during free play. Results did not find a significant effect. This is in line with the mixed results in the literature on the connections of attachment and joint engagement, which not only varies in the finding of significant effects within a given population, but also varies between the results in different populations.


This talk will be held in 3105 Tolman, 12:00-1:30pm.

Monday, April 20, 2015

April 27: Caren Walker, Department of Psychology

 Learning by Thinking and the Development of Abstract Reasoning

By 5 years of age, children already have highly structured knowledge of the world and they routinely form rich, abstract representations that extend beyond their direct experiences. How do children learn so quickly and accurately from such limited information? The vast majority of research to date has explored this question by investigating children’s developing abilities to draw inductive inferences from their observations. However, one of the distinguishing features of human cognition is our ability to go beyond the data and to generate ideas by thinking alone. How is learning by thinking possible? What does this phenomenon tell us about the nature of early mental representations and how they change? To begin to answer these questions, we must first isolate the contributions of our observations from the mechanisms that underlie learning. To this end, my research focuses on a suite of thought-based learning phenomena that are particularly widespread in childhood, including learning by analogy, by explanation, and by engagement in imaginary worlds. I will describe both theoretical and empirical work suggesting that these activities each impose unique, top-down constraints on children’s inferential processes. 

This talk will be held in 3105 Tolman, 12:00-1:30pm



















Tuesday, April 14, 2015

April 20: Catherine Snow, Patricia Albjerg Graham Professor, Harvard University

The Neglected Literacy Skill

Despite robust evidence that classroom discussions promote academic outcomes, multiple forces converge to make authentic discussion a rare event in most U.S. classrooms.  We have been evaluating the contribution of discussion to reading comprehension outcomes among 4th-8th graders attending urban schools, and testing hypotheses about the mechanisms by which discussion enhances reading and writing skills.

This talk will be held in 3105 Tolman, 12:00-1:30pm.
 

Tuesday, April 7, 2015

April 13: Adrienne Wente & Ruthe Foushee

Department of Psychology Graduate students, Adrienne Wente and Ruthe Foushee, will be presenting their research.

Adrienne Wente:
The development of free will beliefs in Chinese and U.S. children
This talk will discuss the development of beliefs about free will in Chinese and U.S. children. Here, free will is defined as the ability to choose to do otherwise. In this study, Chinese and U.S. 4- and 6-year-olds answered a series of questions to gauge whether they believe that they themselves and other people can freely choose to inhibit or act against their desires. Children were also asked to explain why they believe people can practice choice. Results indicate that children from both cultures increase the amount of choice they ascribed with age. However, findings also suggest cultural variability both in how much choice children ascribe, as well as how they
characterize the causal process of choice.

Ruthe Foushee:
Subjective Semantics: Children's semantic development and theory of mind
While semantic compositionality is fundamental to language, and must ultimately be mastered by the child, developing a compositional semantics might be difficult in part because some words have subjective meanings. Some words, like “pretty” (or “tasty,” etc.), are inherently subjective: whether or not a dax is “pretty” doesn’t depend on any property of the world, but is instead a matter of personal preference that speakers can disagree about. By contrast, other words, like “striped” (or “square,” etc.) have fixed, objective meanings: whether or not a dax is “striped” depends on whether the dax has stripes, and is independent of who is describing the dax. Finally, although the meanings of other words like “tall” (or “big,” etc.) depend on objective properties – e.g., for a dax to be “tall” it must be taller than most other daxes – they can also be subjective, and depend on a person’s past experience. 
I will be talking about the theoretical background and methods for a project in its early stages exploring children’s ability to integrate subjectivity in their compositional semantics, which requires them to coordinate not only their knowledge about word meanings and the world, but also to consider others’ personal preferences and past experiences. Preliminary data suggests that adults are sensitive to speakers' personal experience in evaluating the truth of their utterances using vague predicates, and that this sensitivity is developing during the preschool years. 

These talks will be held in 3105 Tolman, 12:00-1:30pm.

Wednesday, March 18, 2015

April 6: Michael Lewis


The Rise of Consciousness and the Development of Emotional Life
Michael Lewis
Rutgers Robert Wood Johnson Medical School
 
Human newborns arrive with a multitude of behaviors, or “action patterns,” that connect them to their physical worlds; for example, tasting a bitter food elicits a recognizable expression of disgust.  Action patterns are not learned, but are readily influenced by temperament and social interactions.  With the emergence of consciousness these early competencies become reflected feelings, giving rise to the self-conscious emotions of empathy, envy, embarrassment, and, later, shame, guilt, and pride.  Beginning as responses to particular physical events, emotions later become elicited by ideas about the self and the world.  The ability to think about ourselves is not only what gives meaning to our emotional lives, but also what enables us to make choices, evaluate our behavior, and make plans for the future. 


This talk will be held in 3105 Tolman, 12:00-1:30pm.