Similarities and differences in the perceptual structure of facial expressions of children and adults

We explored the perceptual structure of facial expressions of six basic emotions, varying systematically in intensity, in adults and children aged 7 and 14 years. Multidimensional scaling suggested that three- or four-dimensional structures were optimal for all groups. Two groups of adults demonstrated nearly identical structure, which had dimensions representing pleasure, potency, arousal, and intensity, despite the fact that one group was tested with a child-friendly “odd-man-out” paradigm and the other group was tested with a conventional similarity-rating paradigm. When tested with the odd-man-out paradigm, the 7-year-olds showed systematic structure, which differed from that of adults in both the meaning of some dimensions and the proximities among some of the expression categories. When tested with similarity judgments, the 14-year-olds showed an adult-like pattern on all measures except that their similarity judgments were more influenced by physical differences than were those of adults. We conclude that an adult-like representation of facial expressions develops slowly during childhood.     

Age‐related changes in the dynamics of fear‐related regulation in early childhood

Self‐regulation is a dynamic process wherein executive processes (EP) delay, minimize or desist prepotent responses (PR) that arise in situations that threaten well‐being. It is generally assumed that, over the course of early childhood, children expand and more effectively deploy their repertoire of EP‐related strategies to regulate PR. However, longitudinal tests of these assumptions are scarce in part because self‐regulation has been mostly studied as a static construct. This study engages dynamic systems modeling to examine developmental changes in self‐regulation between ages 2 and 5 years. Second‐by‐second time‐series data derived from behavioral observations of 112 children (63 boys) faced with novel laboratory‐based situations designed to elicit wariness, hesitation, and fear were modeled using differential equation models designed to capture age‐related changes in the intrinsic dynamics and bidirectional coupling of PR (fear/wariness) and EP (strategy use). Results revealed that dynamic models allow for the conceptualization and measurement of fear regulation as intrinsic processes as well as direct and indirect coupling between PR and EP. Several patterns of age‐related changes were in line with developmental theory suggesting that PR weakened and was regulated more quickly and efficiently by EP at age 5 than at age 2. However, most findings were in the intrinsic dynamics and moderating influences between PR and EP rather than direct influences. The findings illustrate the precision with which specific aspects of self‐regulation can be articulated using dynamic systems models, and how such models can be used to describe the development of self‐regulation in nuanced and theoretically meaningful ways.     

EFFECTS OF CONTINGENT REWARD AND INSTRUCTION ON ORAL READING PERFORMANCE AT DIFFERING LEVELS OF PASSAGE DIFFICULTY

This study examined the effects of reinforcement contingencies designed to increase the performance of existing reading skills as well as the effects of instruction—modeling and practice—designed to increase skill level for oral reading fluency across three levels of reading materials. Results showed that a combination of contingencies, modeling, and practice was effective in producing substantial increases in reading fluency for all participants at their assigned grade levels. These results demonstrate one strategy for experimentally determining those instructional components that are required to increase oral reading rate.     

Ethnic identity and self‐esteem among Asian and European Americans: When a minority is the majority and the majority is a minority

Three studies were conducted to examine the impact of being a numeric majority or minority in Hawai'i and U.S. mainland on the ethnic identity and self‐esteem of Asian and European Americans. Results of Study 1 (N = 214, M age = 19.85 years) and Study 2 (N = 215, M age = 18.20 years) showed that Asian Americans who grew up on the U.S. mainland, where they are a numeric minority, reported higher ethnic identity than did Asian Americans who grew up in Hawai'i, where they are a numeric majority. In addition, ethnic identity was significantly associated with self‐esteem for Asian Americans from the U.S. mainland and European Americans from Hawai'i (numeric minority), but not for Asian Americans from Hawai'i and European Americans from the U.S. mainland (numeric majority). Study 3 (N = 88, M age = 18.12) examined ethnic identity and self‐esteem among Asian and European Americans who had moved from the U.S. mainland to attend a university in Hawai'i over a 1 year time period. The results showed significant relations between ethnic identity and self‐esteem for Asian Americans when they initially moved to Hawai'i, but this relation decreased after they had lived in Hawai'i for 1 year. The findings highlight contextual variations in ethnic identity and self‐esteem for members of both minority and majority groups in the U.S. Copyright © 2014 John Wiley & Sons, Ltd.     

Mediation of self‐regulation and mood in the relationship of changes in high emotional eating and nutritional behaviors: Moderating effects of physical activity

High emotional eating (EE) is prevalent in women with obesity. A previous study's subsample of obese women classified as high emotional eaters participated in either a physical activity‐focused experimental (n = 29) or an educationally focused comparison (n = 22) behavioral treatment and was assessed over phases of expected weight loss (baseline–month 6) and short‐ and long‐term regain (months 6–12 and 6–24, respectively). The study's aim was to assess theory‐based psychological and behavioral mediation and moderation of changes in nutritional behaviors via emotional eating change in order to inform behavioral weight‐loss treatments. During the weight‐loss phase, significant improvements in eating self‐regulation and mood significantly mediated the relationship of reduced EE and intake of both fruits and vegetables (FV) and sweets. Self‐regulation was a significant independent mediator. Physical activity significantly moderated the relationship between EE and self‐regulation changes. All variables demonstrated large positive effects and significant time × group interactions favoring the experimental group. During the short and long‐term phases of expected weight regain, there were no significant changes in FV intake, although consumption of sweets significantly increased during months 6–24. Change in FV and sweets significantly predicted weight change, which was significantly greater in the experimental vs. comparison group over both the initial 6 months (?6.1% vs. ?2.6%) and full 24 months of the study (?7.6% vs. ?1.3%). Findings suggest that behavioral treatments should address EE through improvements in self‐regulation and mood, and supported physical activity will aid in that process. The need for an improved understanding of weight‐loss maintenance remains.     

The relationship between discrimination and memory for spacing and feature changes in houses

Adults need to discriminate between stimuli and recognize those previously seen. For faces, feature changes (e.g., different eyes) and spacing changes (e.g., distances between eyes) are important cues. In two experiments, we assessed the influence of these on discrimination and recognition of houses, a commonly used control in face studies. In both experiments, discrimination was better for feature than spacing changes. Memory for spacing changes was generally poor but aided by extra learning and intermixing change types. Conversely, memory for features was good, especially when there were few houses, and change type was blocked. Unexpectedly, memory was best for differences that might signal something about occupants (e.g., changes to garden or bins), perhaps akin to hairstyles for faces. Overall, results are consistent with previous work showing poor discrimination of spacing in non-face objects and extends them to show that, unlike for faces, spacing differences are also not well remembered.