Social categories guide young children’s preferences for novel objects

To whom do children look when deciding on their own preferences? To address this question, 3‐year‐old children were asked to choose between objects or activities that were endorsed by unfamiliar people who differed in gender, race (White, Black), or age (child, adult). In Experiment 1, children demonstrated robust preferences for objects and activities endorsed by children of their own gender, but less consistent preferences for objects and activities endorsed by children of their own race. In Experiment 2, children selected objects and activities favored by people of their own gender and age. In neither study did most children acknowledge the influence of these social categories. These findings suggest that gender and age categories are encoded spontaneously and influence children’s preferences and choices. For young children, gender and age may be more powerful guides to preferences than race.     

Synergies between processing and memory in children’s reading span

Previous research has established the relevance of working memory for cognitive development. Yet the factors responsible for shaping performance in the complex span tasks used to assess working memory capacity are not fully understood. We report a study of reading span in 7‐ to 11‐year‐old children that addresses several contemporary theoretical issues. We demonstrate that both the timing and the accuracy of recall are affected by the presence or absence of a semantic connection between the processing requirement and the memoranda. Evidence that there can be synergies between processing and memory argues against the view that complex span simply measures the competition between these activities. We also demonstrate a consistent relationship between the rate of completing processing operations (sentence reading) and recall accuracy. At the same time, the shape and strength of this function varies with the task configuration. Taken together, these results demonstrate the potential for reconstructive influences to shape working memory performance among children.     

Preschool children’s interpretation of object‐initial sentences: Neural correlates of their behavioral performance

The acquisition of the function of case‐marking is a key step in the development of sentence processing for German‐speaking children since case‐marking reveals the relations between sentential arguments. In this study, we investigated the development of the processing of case‐marking and argument structures in children at 3, 4;6 and 6 years of age, as well as its processing in adults. Using EEG, we measured event‐related potentials (ERPs) in response to object‐initial compared to subject‐initial German sentences including transitive verbs and case‐marked noun phrases referring to animate arguments. We also tested children’s behavioral competence in a sentence‐picture matching task. Word order and case‐marking were manipulated in German main clauses. Adults’ behavioral performance was close to perfect and their ERPs revealed a negativity for the processing of the topicalized accusative marked noun phrase (NP1) and no effect for the second NP (NP2) in the object‐initial structure. Children’s behavioral data showed a significant above‐chance outcome in the subject‐initial condition for all age groups, but not for the object‐initial condition. In contrast to adults, the ERPs of 3‐year‐olds showed a positivity at NP1, indicating difficulties in processing the non‐canonical object‐initial structures. Children at the age of 4;6 did not differ in the processing patterns of object‐initial vs. subject‐initial sentences at NP1 but showed a slight positivity at NP2. This positivity at NP2, which implies syntactic integration difficulties, is more pronounced in 6‐year‐olds but is absent in adults. At NP1, however, 6‐year‐olds show the same negativity as adults. In sum, the behavioral and electrophysiological findings demonstrate that children in each age group use different strategies, which are indicative of their developmental stage. While 3‐year‐olds merely detect differences in the two sentence structures without being able to use this information for sentence comprehension, 4;6‐year‐olds proceed to use mainly a word‐order strategy, processing NP1 in both conditions in the same manner, which leads to processing difficulties upon detecting case‐marking cues at NP2. At the age of 6, children are able to use case‐marking cues for comprehension but still show enhanced effort for correct thematic‐role assignment.     

Multiple family therapy for Chinese families of children with attention deficit hyperactivity disorder (ADHD): treatment efficacy from the children’s perspective and their subjective experiences

This paper reports the results of our study that assessed the treatment efficacy of multiple family therapy (MFT) from the perspective of participating Chinese children with attention deficit hyperactivity disorder (ADHD) and identified their subjective experiences. Forty‐three children with ADHD in the experimental group (EG) completed a forty‐two‐hour MFT, whilst forty‐five children with ADHD in the control group (CG) had attended two writing classes scheduled three months apart that were similar to those of the MFT. Data from the outcome study were gathered using standardized questionnaires and data from the qualitative study were drawn from thirteen children with ADHD who had completed the MFT and attended the focus group interviews (n = 5) or individual interviews (n = 8) conducted in the post‐treatment phase. The results of the Paired sample t‐test and MANOVA indicated no significant changes on the scores for the four measures adopted (perception of competence, hopefulness, parent‐child relationship and perceived social support) in the pre‐ and post‐treatment for the EG and the CG. Five themes emerged from the narratives of children with ADHD, which revealed the children’s subjective experiences with the MFT: (a) full of fun; (b) building friendships through common experiences; (c) a happy family time; (d) safe space; and (e) positive parental responses and communications.     

Evidence for early arousal‐based differentiation of emotions in children’s musical production

Accurate perception and production of emotional states is important for successful social interactions across the lifespan. Previous research has shown that when identifying emotion in faces, preschool children are more likely to confuse emotions that share valence, but differ in arousal (e.g. sadness and anger) than emotions that share arousal, but differ on valence (e.g. anger and joy). Here, we examined the influence of valence and arousal on children's production of emotion in music. Three‐, 5‐ and 7‐year‐old children recruited from the greater Hamilton area (N = 74) ‘performed’ music to produce emotions using a self‐pacing paradigm, in which participants controlled the onset and offset of each chord in a musical sequence by repeatedly pressing and lifting the same key on a MIDI piano. Key press velocity controlled the loudness of each chord. Results showed that (a) differentiation of emotions by 5‐year‐old children was mainly driven by arousal of the target emotion, with differentiation based on both valence and arousal at 7 years and (b) tempo and loudness were used to differentiate emotions earlier in development than articulation. The results indicate that the developmental trajectory of emotion understanding in music may differ from the developmental trajectory in other domains.     

The role of relational similarity in young children’s use of a scale model

The role of relational similarity in 3-year-old children’s understanding of the relation between a scale model and the space it represents was investigated in two studies. Relational similarity was manipulated by arranging the objects within the two spaces in either the same or different configurations; thus, the internal relations among the objects were either identical or very different. The pattern of results across studies revealed that multiple factors interacted to determine the children’s appreciation of the higher-level model–room relation. When other information about the model–room relation was provided via explicit instructions (Experiment 1), relational similarity did not affect performance. However, relational similarity did have a significant effect on performance when only minimal information regarding the model–room relation was given (Experiment 2). These results established that the children were sensitive to the relations among the objects within each space, as well as to whether those relations were similar across spaces. Furthermore, the results indicated that successful performance was supported by appreciation of the higher-level model–room relation, not merely the detection of individual object correspondences.     

Evidence for discrete profiles of children’s physiological activity across three neurobiological system and their transitions over time

The conceptualization of stress‐responsive physiological systems as operating in an integrated manner is evident in several theoretical models of cross‐system functioning. However, limited empirical research has modeled the complexity of multisystem activity. Moreover few studies have explored developmentally regulated changes in multisystem activity during early childhood when plasticity is particularly pronounced. The current study used latent profile analysis (LPA) to evaluate multisystem activity during fall and spring of children's transition to kindergarten in three biological systems: the parasympathetic nervous system (PNS), sympathetic nervous system (SNS), and hypothalamic pituitary adrenal (HPA) axis. Latent transition analysis (LTA) was then used to examine the stability of profile classification across time. Across both timepoints, three distinct profiles of multisystem activity emerged. One profile was characterized by heightened HPA axis activity (HPA Axis Responders), a second profile was characterized by moderate, typically adaptive patterns across the PNS, SNS, and HPA axis (Active Copers/Mobilizers), and a third profile was characterized by heightened baseline activity, particularly in the PNS and SNS (Anticipatory Arousal/ANS Responders). LTA of fall‐to‐spring profile classifications indicated higher probabilities that children remained in the same profile over time compared to probabilities of profile changes, suggesting stability in certain patterns of cross‐system responsivity. Patterns of profile stability and change were associated with socioemotional outcomes at the end of the school year. Findings highlight the utility of LPA and LTA to detect meaningful patterns of complex multisystem physiological activity across three systems and their associations with early adjustment during an important developmental transition.     

From sharing to dividing: young children’s understanding of division

Children have particular difficulty with division problems, as compared to sharing problems. An inability to discriminate between the dividend, divisor and quotient might contribute to their difficulty with division. This study investigates whether young children (5–9 years) were able to discriminate between the divisor and quotient in simple division problems that were modeled for them. Children were presented with partitive and quotitive division problems in which the dividend was grouped either by the divisor or by the quotient. The children showed a very different pattern of results in the partitive and quotitive problems; they found it easier to identify the answer (quotient) when the dividend was grouped by the divisor in partitive problems and by the quotient in quotitive problems. It is argued that children rely on a schema of action of creating ‘portions’ when they first learn about division, and that the ‘portions’ produced by sharing are different in partitive and quotitive problems. We discuss this finding in terms of the importance of problem representation, children’s schemas of action and mental models.     

The effects of stimulus density on children’s analysis of hierarchical patterns

In three experiments, 4‐, 5‐, 6‐ and 8‐year‐olds and adults were asked to draw hierarchical letter and geometric forms from memory. Across the experiments, the number of elements comprising the hierarchical models was systematically varied. For each drawing of a hierarchical form, the quality of the participant’s reproduction of global and local level information was evaluated separately. Results showed that young children demonstrated significant analytic competence. However, the data also suggested that changes in stimulus density were more disruptive, in specific ways, to 4‐ and 5‐year‐old children’s processing than to that of the older children and adults.     

Quality of text recall as a function of children's classroom competence

This study demonstrated that the manner in which children, as students, chose to devise their recall was a function of the type of response register they maintained with their teachers. Students (mean C.A. = 10.4 years) who used an Imitative Response Register recalled significantly more referential propositions than students using either a Contingent or Noncontingent Response Register. In this sense, students employing an Imitative Response Register were more likely to reproduce text than the other Register Groups. Students (mean C.A. = 10.3 years) who used a Noncontingent Response Register recalled significantly more pragmatic inference propositions, i.e., either elaboration or distortion inference propositions, than students using either Imitative or Contingent Response Registers. In this sense, students employing a Noncontingent Response Register were more likely to embellish text than the other two groups. Finally, students (mean C.A. = 10.6 years) who used a Contingent Response Register recalled significantly more text-structured propositions, i.e., propositional and enabling inference propositions, than students using either Imitative or Noncontingent Response Registers. In this sense, students employing a Contingent Response Register were more likely to reconstruct text than the other two groups. These findings are discussed in terms of a classroom competence model of student behaviors.     

Learning to remember: Social-communicative exchanges and the development of children’s memory skills

For more than three decades, the question “What is memory development the development of?” has guided research on children’s memory. As theories and methodologies have evolved, so too has our knowledge of the mnemonic competencies of young children, and of age-related differences in memory performance. Unfortunately, however, current understanding of the development of memory is seriously limited, largely because the bulk of the literature is based on cross-sectional experiments. From our perspective, in order to increase our understanding of the development of children’s skills for remembering, it is necessary to conduct longitudinal studies that illuminate mechanisms underlying developmental change. In addition, experimental methods must be used to explore further the operation of these potential mediators of change. In this article, we review our own recent longitudinal and experimental research to illustrate how we are addressing a new call—to study both memory development and the development of memory.     

Lion Kings or puppies: the influence of fantasy on children’s understanding of pretense

Many have thought that children have an early appreciation of the mind in the case of pretend play. Results from several experiments are against this. However, an experiment by Lillard (Body or mind: children’s categorizing of pretense, Child Development, 67 (1996), 1717-1734, Experiment 4) suggested that when a pretense is about a fantasy character, instead of a real entity, children might have a better understanding of the mind’s involvement. The present experiment tested this, and found that indeed, when pretending to be a fantasy character is at issue, 4-year-olds are significantly more apt to indicate the mind’s involvement. Several possible reasons for this result are discussed.     

Applying the choice/no‐choice methodology: the case of children’s strategy use in spelling

The present study illustrates the usefulness of the choice/no‐choice method to investigate age‐related changes in children’s strategies. This method enables independent assessments of strategy use and execution. It is applied in children’s spelling strategies. Third‐ and fifth‐grade children were asked to write down words using a dictionary or not (choice condition). Then, they were successively required to spell words using each strategy (no‐choice condition). Performance showed that (a) strategy choices and accuracy differed in younger and older children, (b) strategy effectiveness was the strongest predictor of children’s strategy use, and (c) having the choice resulted in higher level of spelling accuracy (especially in older children) than having no choice. We discuss the implications of these results on how the choice/no‐choice method can be useful for understanding and investigating children’s strategy choices in spelling and other cognitive domains.     

EEG phase synchronization during semantic unification relates to individual differences in children’s vocabulary skill

As we listen to speech, our ability to understand what was said requires us to retrieve and bind together individual word meanings into a coherent discourse representation. This so‐called semantic unification is a fundamental cognitive skill, and its development relies on the integration of neural activity throughout widely distributed functional brain networks. In this proof‐of‐concept study, we examine, for the first time, how these functional brain networks develop in children. Twenty‐six children (ages 4–17) listened to well‐formed sentences and sentences containing a semantic violation, while EEG was recorded. Children with stronger vocabulary showed N400 effects that were more concentrated to centroparietal electrodes and greater EEG phase synchrony (phase lag index; PLI) between right centroparietal and bilateral frontocentral electrodes in the delta frequency band (1–3 Hz) 1.27–1.53 s after listening to well‐formed sentences compared to sentences containing a semantic violation. These effects related specifically to individual differences in receptive vocabulary, perhaps pointing to greater recruitment of functional brain networks important for top‐down semantic unification with development. Less skilled children showed greater delta phase synchrony for violation sentences 3.41–3.64 s after critical word onset. This later effect was partly driven by individual differences in nonverbal reasoning, perhaps pointing to non‐verbal compensatory processing to extract meaning from speech in children with less developed vocabulary. We suggest that functional brain network communication, as measured by momentary changes in the phase synchrony of EEG oscillations, develops throughout the school years to support language comprehension in different ways depending on children's verbal and nonverbal skill levels.