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50
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Introduction
The focus of my current research is on the development of our ability to ascribe complex mental states (especially beliefs) to predict people's behaviours. Current projects examine: (1) signature limits on children's and adults' efficient ability to track belief-like states; and (2) the nature of dissociations between looking and verbal responses over a range of perspective-taking tasks. I also engage in collaborative research on comparative cognition.
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January 1999 - December 2013
January 1995 - December 1998
Publications
Publications (50)
Human beings are able to quickly step into others’ shoes to predict peoples’ actions. There is little consensus over how this cognitive feat might be accomplished. We tested the hypotheses that an efficient, but inflexible, mindreading system gives rise to appropriate reaction time facilitation in a standard unexpected transfer task, but not in a t...
Characterizing the cognitive architecture of human mindreading forces us to address two puzzles in people's attributions of belief: Why children show inconsistent expectations about others' belief-based actions, and why adults' reasoning about belief is sometimes automatic and sometimes not. The seemingly puzzling data suggest that humans have many...
We tested Apperly and Butterfill's (2009, Psychological Review, 116, 753) theory that humans have two mindreading systems whereby the efficient-system guiding anticipatory glances displays signature limits that do not apply to the flexible system guiding verbal predictions. Experiments 1 and 2 tested urban Mainland-Chinese adults (n = 64) and Exper...
This study investigated whether humans have two mind-reading systems whereby the efficient system, unlike the flexible system, is naturally limited. There were two experiments and the first included adults as well as children (3- to 4-year-olds; total N = 128). In Experiment 1, all groups efficiently gazed in anticipation of an agent's beliefs abou...
How can human beings make significant but cognitively taxing inferences about others' beliefs yet also effectively "mind read" in fast-moving social situations? We tested the idea that humans have two mind-reading systems: a flexible system and an efficient system that can make fast calculations because it has natural blind spots to the kinds of in...
De Neys's incisive critique of empirical and theoretical research on the exclusivity feature underscores the depth of the challenge of explaining the interplay of fast and slow processes. We argue that a closer look at research on mindreading reveals abundant evidence for the exclusivity feature - as well as methodological and theoretical perspecti...
The role played by motor representations in tracking others’ belief-based actions remains unclear. In experiment 1, the dynamics of adults’ anticipatory mediolateral motor activity (leftwards–rightwards leaning on a balance board) as well as hand trajectories were measured as they attempted to help an agent who had a true or false belief about an o...
We investigated whether selective discussion of autobiographical memory narratives would impact the quality of young people's recall of their nondiscussed memory narratives. Children (ages 8-9 years, n = 65) and adolescents (ages 13-15 years, n = 58) completed an adapted version of the retrieval-induced forgetting (RIF) paradigm for self-generated...
Our motor system can generate representations which carry information about the goals of another agent’s actions. However, it is not known whether motor representations play a deeper role in social understanding, and, in particular, whether they enable tracking others’ beliefs. Here we show that, for adult observers, reliably manifesting an ability...
Anticipatory looking on mindreading tasks can indicate our expectation of an agent’s action. The challenge is that social situations are often more complex, involving instances where we need to track an agent’s false belief to successfully identify the outcome to which an action is directed. If motor processes can guide how action goals are underst...
Cognitive developmental changes in belief understanding, particularly how and when children come to first appreciate false beliefs, occupy the bulk of research on human mindreading. Given apparently conflicting evidence from direct and indirect false‐belief tasks, there is much debate over whether there is a major conceptual breakthrough in belief...
Little is known about whether human beings' automatic mindreading is computationally restricted to processing a limited kind of content, and what exactly the nature of that signature limit might be. We developed a novel object-detection paradigm to test adults' automatic processing in a Level 1 perspective-taking (L1PT) context (where an agent's be...
We investigated whether selective discussion leads to retrieval-induced forgetting (RIF) for early to mid-adolescents’ positive and negative autobiographical memories after delays of 5 min and 1 day. Adolescents (13–15 years of age; N = 58) completed an adapted version of the RIF paradigm for adults’ emotionally valenced autobiographical memories....
A host that has been targeted by an avian brood parasite can recover most of its potential fitness loss by ejecting the foreign egg(s) from its nest. The propensity for some hosts to engage in egg rejection behavior has put selective pressure on their parasites to evolve mimetic eggshells resembling the host's own shell colors and maculation. In tu...
The commentary by Baillargeon, Buttelmann and Southgate raises a number of crucial issues concerning the replicability and validity of measures of false belief in infancy. Although we agree with some of their arguments, we believe that they underestimate the replication crisis in this area. In our response to their commentary, we first analyze the...
Although theory of mind (ToM) is argued to emerge between 3-5 years of age, data from non-Western, small-scale societies suggest diversity. Deeper investigations into these settings are warranted. In the current study, over 400 Melanesian children from Vanuatu (range = 3-14 years), growing up in either urban or rural-remote environments, completed...
This experiment investigated whether retrieval-induced forgetting (RIF) would be found in children's self-generated autobiographical memory recall. An adapted version of the RIF paradigm for adults' autobiographical memories was administered to 8- and 9-year-old children (N = 65). We hypothesized that RIF would be found in terms of both number of m...
Although theory of mind (ToM) is argued to emerge between 3 and 5 years of age, data from non-Western, small-scale societies suggest diversity. Deeper investigations into these settings are warranted. In the current study, over 400 Melanesian children from Vanuatu (range = 3–14 years), growing up in either urban or rural remote environments, comple...
The interpretations of infants’ non-verbal responses in violation-of-expectation (VOE) false belief scenarios are subject to intense theoretical debate. In Experiment 1, adults provided online narratives for VOE scenarios meant to tap understanding of false beliefs about object location, perception and identity. Adults provided cognitively-oriented...
Little comparative work has focused on what nonhumans understand about what physical acts others are capable of performing, and none has yet done so in the wild, or within a competitive framework. This study shows that North Island robins visually attend to human limbs in the context of determining who to steal food from. We presented 24 wild North...
Wu, Sheppard, and Mitchell (Br. J. Psychol., 2016; 107, 1-22) investigate in a fascinating study the fact that adults can detect empathic traits in others after only briefly watching or listening to a person. In this commentary, we highlight how the processes of an efficient, implicit, but inflexible mentalizing system are likely to operate in such...
Theory-of-mind research reveals a puzzling pattern of young children showing implicit “mindreading” success in indirect false-belief tasks well before they can pass explicit tasks where they are asked to make direct predictions about the mistaken agent's belief or behavior. Relevant theorizing has either boosted indirect responses (e.g., eye moveme...
North Island robins of New Zealand are a food hoarding species, which is unique in that they almost exclusively cache highly perishable hunted insects for later retrieval. In order to do so, they either kill and dismember or paralyze their prey for caching, depending on the prey size and kind. The present study comprises two experiments, using a Vi...
Life-history theory posits that the evolutionary responses of hosts to avian brood parasitism will be shaped by the extent of the fitness costs of parasitism. Previous modelling work predicted that hosts of more virulent parasites should eject foreign eggs, irrespective of clutch size, whereas hosts of less virulent parasites, with smaller clutch s...
This paper presents an evaluation of the effectiveness of a new socially-assistive robot, Auti, in encouraging physical and verbal interactions in children with autism. It aims to encourage positive play behaviors such as gentle speaking and touching, with positive reinforcement through movement responses, and to discourage challenging behaviors, s...
Gaze following and awareness of attentional cues are hallmarks of human and non-human social intelligence. Here, we show that the North Island robin (Petroica longipes), a food-hoarding songbird endemic to New Zealand, responds to human eyes. Robins were presented with six different conditions, in which two human experimenters altered the orientati...
Quantity discrimination for items spread across spatial arrays was investigated in chimpanzees (Pan troglodytes) and North Island New Zealand robins (Petroica longipes), with the aim of examining the role of spatial separation on the ability of these 2 species to sum and compare nonvisible quantities which are both temporally and spatially separate...
While numerosity-representation and enumeration of different numbers of objects-and quantity discrimination in particular have been studied in a wide range of species, very little is known about the numerical abilities of animals in the wild. This study examined spontaneous relative quantity judgments (RQJs) by wild North Island robins (Petroica lo...
Mandarin-speaking preschoolers in Mainland China (3- to 4-year-olds; N= 192) were tested for dissociations between anticipatory looking (AL) and verbal judgments on false-belief tasks. The dissociation between the two kinds of understanding was robust despite direct false-belief test questions using a Mandarin specific think-falsely verb and despit...
Executive function mechanisms underpinning language-related effects on theory of mind understanding were examined in a sample of 165 preschoolers. Verbal labels were manipulated to identify relevant perspectives on an explicit false belief task. In Experiment 1 with 4-year-olds (N = 74), false belief reasoning was superior in the fully and protagon...
We review recent anticipatory looking and violation-of-expectancy studies suggesting that infants and young preschoolers have spontaneous (implicit) understanding of mind despite their known problems until later in life on elicited (explicit) tests of false-belief reasoning. Straightforwardly differentiating spontaneous and elicited expressions of...
Three experiments used dual-task suppression methodology to study the use of inner speech and visuospatial resources for mediating central executive performance by children with autism (CWA) and group-matched typically developing (TD) controls. Expt 1 revealed that CWA did not recruit inner speech to facilitate arithmetic task-switching performance...
Three studies were carried out to investigate sentential complements being the critical device that allows for false-belief understanding in 3- and 4-year-olds (N = 102). Participants across studies accurately gazed in anticipation of a character's mistaken belief in a predictive looking task despite erring on verbal responses for direct false-beli...
This study examined the cognitive underpinnings of spontaneous imagination in autism spectrum disorder (ASD) by way of individual differences. Children with ASD (N = 27) and matched typically developing (TD) children were administered Karmiloff-Smith's (1990) imaginative drawing task, along with measures that tapped specific executive functions (ge...
Most animals can distinguish between small quantities (less than four) innately. Many animals can also distinguish between larger quantities after extensive training. However, the adaptive significance of numerical discriminations in wild animals is almost completely unknown. We conducted a series of experiments to test whether a food-hoarding song...
Recent research has shown that children use colors systematically in relation to how they feel about certain colors and the figures that they draw. This study explored cultural differences between Finnish and English children's use of color to represent figures with contrasting emotional characters. One hundred and eight children (54 Finnish, 54 En...
This review of children’s use of media and their responses to it is set within the rapidly changing media landscape. The review examined four major aspects of children and media: physical access,selection and ways of using media, social contexts of media use, and responses to media accessed and used. Literature excluded from the review included the...
A sample of 315 children aged between 6 and 9 years participated in a 5-month longitudinal study aimed at investigating constraints on representational flexibility as observed in drawing behaviour. The study specifically looked at how external interventions affected children's representations over time. The intervention involved showing children va...
Generative thinking is defined as the active construction of a creative instantiation of some familiar concept or object. Four studies examined differences in the generative thinking of 6-, 9-, and 12-year-olds. All versions of the task involved imagining where on the body they would place a third eye and why. In Study 1, when children and adults w...
Children's ability to recall text stories coherently and the ways in which this skill unfolds in the context of parent-child interaction have been receiving increasing research attention over the last several years. However, mothers' ability to turn a purely visual story into a verbal one and the implications for their children's independent story...
We investigated the Mozart effect, as documented by Rauscher, Shaw, and Ky (1993), with school-aged children. Experiment 1 contrasted the spatial IQ scores of children who had listened to a Mozart sonata (K.448) with the scores of children who had listened to a piece of popular dance music in a pretest-post-test design. There was no significant mai...
Purpose. Television police dramas provide viewers with an inaccurate representation of police work, overemphasizing sensational and dramatic activities while underemphasizing routine duties. This raises the critical issue of whether such misrepresentations are reflected in children's perceptions of law-enforcement activities in real life. Method. A...
The manner in which parents and children reminisce about personal events has received increasing attention over the last decade as it has important implications for children's memory performance. How individual differences in maternal talk style relate to children's story recall is less clear. The present study examined stylistic consistencies and...
Recent research has established that young children can rapidly develop scripts for familiar events, and use such scripts to comprehend and recall information. Most of the available research has concerned everyday experiences, but relatively little attention has been paid to children's use of event knowledge in processing media content. A total of...
This study investigated the role of event knowledge in children's (Grades 1, 3, 5, 7) inference of narrative structure and causal coherence in television narratives. Children narrated on-line stories for a script-based television program presented as a canonical or non-canonical version. For the canonical version, all children produced well-structu...
Television viewing may provide input to children's knowledge of crime and law enforcement, but little is known of how young viewers interpret such material. The study reported here investigates how children and adults represent the content of police programs, their understanding of the various scenes, their temporal organization and the various mod...