Reciprocal and complementary sibling interactions,relationship quality and socio‐emotional problem solving

Associations between reciprocal and complementary sibling interactions, sibling relationship quality, and children's socio‐emotional problem solving were examined in 40 grade 5–6 children (M age = 11.5 years) from middle class, Caucasian, Canadian families using a multi‐method approach (i.e. interviews, self‐report questionnaires, daily diary checklist, narrative task). Findings demonstrated that reciprocal sibling interactions were positively associated with warmth, mutual esteem, happy daily exchanges, and negatively related to rivalry and dominance, whereas complementary interactions were positively related to upsetting daily exchanges. Further, reciprocal and complementary interactions differed significantly in relation to several relationship qualities, with reciprocal interactions emerging as a significantly stronger correlate of happy exchanges. Only reciprocal interactions were positively correlated with socio‐emotional problem solving. Finally, birth order moderated the negative association of reciprocal interactions with rivalry and dominance and the positive association with socio‐emotional problem solving. In each case, the effect was stronger for younger members of the sibling dyad. Findings are discussed in light of recent theory on the sibling relationship and children's development. Copyright © 2007 John Wiley & Sons, Ltd.     

The temporal course of visual pattern encoding: Effects of pattern goodness

Subjects typically display superior reproduction of good (redundant, symmetrical) visual patterns compared with poor ones. This pattern goodness effect could conceivably involve encoding processes, short-term memory processes, or response processes. The present experiments explored the time course of wholistic encoding of Garner dot patterns as a function of tachistoscopic exposure time, delay of backward masking, and post-mask shadowing. Within the specific framework of additive factors theory, Experiment I showed: (a) equal rates of encoding for all patterns since comparable slopes were obtained for the recall X processing time functions; and (b) superior absolute recall for good patterns since different intercepts were obtained. Experiment II demonstrated that when degree of encoding was initially equalized for all patterns, the rate of extraction of further information remained constant over available processing time and was unaffected by pattern goodness, slopes and intercepts for good versus poor patterns then being equal. Experiment III confirmed that, given some fixed duration of available processing time, information is abstracted at the same rate for all pattern regardless of the ratio stimulus display time to delay of mask onset. Experiment IV indicated that maintenance rehearsal normally occurs in the present experimental situation, and that very good patterns are somewhat less disrupted by shadowing over a three-second interval. While STM is thus implicated in the pattern goodness effect it does not follow that STM constitutes a complete explanation of the intercept differences reported here. Empirical evidence of response bias toward production of good patterns, however, was not found. It was shown that very good patterns are highly familiar and nameable, and proposed that they do consequently have an early encoding advantage.     

Intensive quantities: Why they matter to developmental research

A distinction can be drawn between extensive and intensive quantities. Extensive quantities (e.g., volume, distance), which have been the focus of developmental research, depend upon additive combination. Intensive quantities (e.g., density, speed), which have been relatively neglected, derive from proportional relations between variables. Thus, while proportional relations can be expressed with extensive quantities, these relations are constitutive with intensive quantities. One consequence is that factors, which are theorized as marginal with extensive quantities, are conceptually central in intensive contexts, and may need to be recognized in developmental models. Two such factors, termed variable salience and relational focus, are examined here, via a study where 963 Scottish children aged 7–12 years were asked to solve 42 intensive quantity problems in comparison and missing value format. Reasoning improved with age, but at all ages it was strongly influenced by variable salience and relational focus. Moreover, the manner in which these two factors interacted with other factors differed from what might be expected from models of proportional reasoning with extensive quantities. Based upon these results, it is argued that the distinction between extensive and intensive quantities is theoretically significant, and intensive quantities need to be granted more attention in the future.     

Sex and Gender in the 1980s Heavy Metal Scene: Groupies,Musicians, and Fans Recall Their Experiences

Groupies, heavy metal musicians, and highly devoted fans (metalheads) were some of the most salient identity groups for teenagers and emerging adults in the 1980s—the tail end of the Baby Boom and the beginning of the newly emerging Generation X. Met with appalled reactions from conventional society, the heavy metal scene nevertheless appeared to help at least some disenchanted youth negotiate turbulent times. The present study of 144 middle-aged 1980s groupies, metal fans, and professional musicians used both quantitative and qualitative data to develop insights into the developmental processes of these emerging adults of the 1980s. Metalheads described their childhood experiences, including maltreatment, their sexual and substance use activities in the 1980s, identity issues, and reported on current indicators of adjustment, such as education, mental health, and happiness. The results confirm that youth involved in the metal scene had high rates of substance use, risky sexual behaviors, and especially for groupies, traumatic childhood experiences, as well as drug dependence and sexual violence during their groupie days. However, despite their trauma and risky behaviors, participants were able to thrive and develop healthy adult lives, from which they look back fondly on those 1980s experiences. The richness of these data provide insights into the search for identity for marginalized youth, and provide hypotheses for future research on the understudied developmental processes of such adolescent style cultures.     

The Identity‐Location Binding Problem

The binding problem is fundamental to visual perception. It is the problem of associating an object's visual properties with itself and not with some other object. The problem is made particular difficult because different properties of an object, such as its color, shape, size, and motion, are often processed independently, sometimes in different cortical areas. The results of these separate analyses have to be combined before the object can be seen as a single coherent entity as opposed to a collection of unconnected features. Visual bindings are typically initiated and updated in a serial fashion, one object at a time. Here, we show that one type of binding, location‐identity bindings, can be updated in parallel. We do this by using two complementary techniques, the simultaneous‐sequential paradigm and systems factorial technology. These techniques make different assumptions and rely on different behavioral measures, yet both came to the same conclusion.     

The Impact of Testing on the Formation of Children's and Adults' False Memories

Witnesses are frequently questioned immediately following a crime. The effects of such testing on false recall are inconclusive: Testing may inoculate against subsequent misinformation or enhance false memory formation. We examined whether different types of processing can account for these discrepancies. Drawing from Fuzzy‐trace and Associative‐activation theories, immediate questions that trigger the processing of the global understanding of the event can heighten false memory rates. However, questions that trigger the processing of specific details can inoculate memories against subsequent misinformation. These effects were hypothesized to be more pronounced in children than in adults. Seven/eight‐, 11/12‐, 14/15‐year‐olds, and adults (N = 220) saw a mock‐theft film and were tested immediately with meaning or item‐specific questions. Test results on the succeeding day replicated classic misinformation and testing effects, although our processing hypothesis was not supported. Only adults who received meaning questions benefited from immediate testing and, across all ages, testing led to retrieval‐enhanced suggestibility. © 2016 The Authors. Applied Cognitive Psychology Published by John Wiley & Sons, Ltd.