Do Children Understand Iconic Gestures About Events as Early as Iconic Gestures About Entities?

Children can understand iconic co-speech gestures that characterize entities by age 3 (Stanfield et al. in J Child Lang 40(2):1-10, 2014; e.g., "I'm drinking" [Formula: see text] tilting hand in C-shape to mouth as if holding a glass). In this study, we ask whether children understand co-speech gestures that characterize events as early as they do so for entities, and if so, whether their understanding is influenced by the patterns of gesture production in their native language. We examined this question by studying native English speaking 3- to 4 year-old children and adults as they completed an iconic co-speech gesture comprehension task involving motion events across two studies. Our results showed that children understood iconic co-speech gestures about events at age 4, marking comprehension of gestures about events one year later than gestures about entities. Our findings also showed that native gesture production patterns influenced children's comprehension of gestures characterizing such events, with better comprehension for gestures that follow language-specific patterns compared to the ones that do not follow such patterns-particularly for manner of motion. Overall, these results highlight early emerging abilities in gesture comprehension about motion events.

Contingency analysis of caregiver behavior: Implications for parent training and future directions

Parent training is often a required component of effective treatment for a variety of common childhood problems. Although behavior analysts have developed several effective parent-training technologies, we know little about the contingencies that affect parent behavior. Child behavior is one source of control for parent behavior that likely contributes to the development of childhood problems and outcomes of parent training. We reviewed the evidence supporting child behavior as controlling antecedents and consequences for parent behavior. The implications for parent training are discussed, and recommendations for future research are suggested.

Restricted interests and teacher presentation of items

Restricted and repetitive behavior (RRB) is more pervasive, prevalent, frequent, and severe in individuals with autism spectrum disorders (ASDs) than in their typical peers. One subtype of RRB is restricted interests in items or activities, which is evident in the manner in which individuals engage with items (e.g., repetitious wheel spinning), the types of items or activities they select (e.g., preoccupation with a phone book), or the range of items or activities they select (i.e., narrow range of items). We sought to describe the relation between restricted interests and teacher presentation of items. Overall, we observed 5 teachers interacting with 2 pairs of students diagnosed with an ASD. Each pair included 1 student with restricted interests. During these observations, teachers were free to present any items from an array of 4 stimuli selected by experimenters. We recorded student responses to teacher presentation of items and analyzed the data to determine the relation between teacher presentation of items and the consequences for presentation provided by the students. Teacher presentation of items corresponded with differential responses provided by students with ASD, and those with restricted preferences experienced a narrower array of items.

Commentary on special section on "bidirectional parent-child relationships": the continuing evolution of dynamic, transactional models of parenting and youth behavior problems

Creative and methodologically sophisticated longitudinal research on bidirectionality in parenting and child behavior can shed important new light on the dynamics of behavior-problem development. The articles assembled for this Special Section are at the forefront of efforts aimed at tracing the interplay of parenting behavior and child and adolescent adjustment problems over time. In this commentary, we provide a brief overview of thinking and research on bidirectionality and then highlight key themes and findings reported in these articles. We describe some of the challenges in research on bidirectional processes and offer some recommendations for future research in this area.

The contingent smile: a meta-analysis of sex differences in smiling

The authors present a meta-analysis of sex differences in smiling based on 448 effect sizes derivedfrom 162 research reports. There was a statistically significant tendency for women and adolescent girls to smile more than men and adolescent boys (d = 0.41). The authors hypothesized that sex differences in smiling would be larger when concerns about gender-appropriate behavior were made more conspicuous, situational constraints were absent or ambiguous, or emotion (especially negative) was salient. It was also predicted that the size of the sex difference in smiling would vary by culture and age. Moderator analysis supported these predictions. Although men tend to smile less than women, the degree to which this is so is contingent on rules and roles.

The effects of severe behavior problems in children on the teaching behavior of adults

Applied behavior analysts have focused on how adults can influence the problem behavior of children using a variety of behavior modification strategies. A related question, virtually unexplored, is how the behavior problems of children influence adults. This child-effects concept was explored empirically in a study involving 12 adults who were asked to teach four pairs of children in which one member of the pair exhibited problem behavior and the other typically did not. Results demonstrated that problem children displayed tantrums, aggression, and self-injury contingent on adult instructional attempts but not at other times, whereas nonproblem children showed little or no problem behavior at any time. Importantly, from a child-effects perspective, adults engaged in teaching activities with nonproblem children more often than with problem children. Also, when an adult worked with a problem child, the breadth of instruction was more limited and typically involved those tasks associated with lower rates of behavior problems. The implications of these results are discussed with respect to theories of escape behavior, current assessment practices, and intervention issues related to maintenance. The existence of child effects suggests that problem behavior may be better understood when it is conceptualized as involving a process of reciprocal influence between adult and child.