Learning from others allows young children to acquire vast amounts of information quickly, but doing so effectively also requires epistemic vigilance. Although preschool-age children have some capacity to engage in such processes, they often have trouble resisting information from misleading informants. The present research takes a "novel…

Past research has shown a discrepancy in young infants' use of height information in occlusion and containment events--a pattern typically accounted for by event categorization and rule learning. Broadening these theories, the present experiment examined the role of comparison in young infants' reasoning about physical events. We rotated a typical…

Current models of the affinity between syntax and vocabulary are complex and recognize the contribution of bootstrapping and computational processes. To date, the mutual facilitation between these two constructs over time has not been studied in second language (L2) school children. The present study investigated longitudinally the direction and…

Across languages, children produce locative "back" earlier and more frequently than "front," but the reasons for this asymmetry are unclear. On a "semantic misanalysis" explanation, early meanings for "front" and "back" are nonadult (nongeometric), and rely on notions of visibility and occlusion…

The current study investigated the role of theory of mind development in school readiness among 120 low-income preschool and kindergarten children. A short-term longitudinal design was used to examine relations among theory of mind, the understanding of teaching, and learning behaviors and their collective role in children's literacy and numeracy…

Most people believe that time seems to pass more quickly as they age. Building on assumptions of socioemotional selectivity theory, we investigated whether awareness that one's future lifetime is limited is associated with one's experience of time during everyday activities across adulthood in 3 studies. In the first 2 studies (Study 1: N = 608;…

Four experiments investigated whether infants and adults infer that a novel entity that interacts in a contingent, communicative fashion with an experimenter is itself an intentional agent. The experiments contrasted the hypothesis that such an inference follows from amodal representations of the contingent interaction alone with the hypothesis…

Adolescents become increasingly sensitive to social evaluation. Some previous studies have related this change to pubertal development. The present longitudinal study examined the role of sociocognitive development. We investigated whether or not the transition to recursive thinking, the ability to think about (others') thoughts, would be…

The processes and mechanisms of theory-of-mind development were examined via a training study of false-belief conceptions in deaf children of hearing parents (N = 43). In comparison to 2 different control conditions, training based on thought-bubble instruction about beliefs was linked with improved false-belief understanding as well as progress…

Two studies addressed key theoretical debates in theory of mind (ToM) development by comparing (a) deaf native signers (n = 18), (b) deaf late signers (n = 59), and (c) age-matched hearing persons (n = 74) in childhood (Study 1: n = 81) and adulthood (Study 2: n = 70) on tests of first- and second-order false belief and conversational sarcasm.…

To examine cultural contrasts in the ordered sequence of conceptual developments leading to theory of mind (ToM), we compared 135 3- to 6-year-olds (77 Australians; 58 Iranians) on an established 5-step ToM scale (Wellman & Liu, 2004). There was a cross-cultural difference in the sequencing of ToM steps but not in overall rates of ToM mastery.…

On the basis of a large-scale survey of high-school youth, the authors compared adolescents reporting exclusively heterosexual, mostly heterosexual, bisexual, and predominately same-sex attraction based on high-risk involvement across a range of risk behaviors. Bisexual and same-sex attracted groups were characterized by heightened high-risk…

When sibling pairs interacted with unrelated mothers, facial and vocal affect directed to the difficult child in the pair was more dysphoric than that directed to the other. This was particularly the case among women who attributed relatively high control to children and low control to adults. A similar relation between affect and attributions was…

Expands an existing nonlinear dynamic epidemic model of onset of social activities (EMOSA), motivated by social contagion theory, to quantify the likelihood of pregnancy for adolescent girls of different sexuality statuses. Compares five sexuality/pregnancy models to explain variance in national prevalence curves. Finds that adolescent girls have…

Examined three components of the attachment-transmission model in 48 kibbutz dyads from communal and home-based sleeping arrangements. Found that security of infants' attachment relations and autonomy of mothers' attachment representations were associated with higher emotional availability scores. Poorer emotional availability was found in dyads…