Influence of physical activity on concentration among junior high-school students

The level and quality of concentration were tested before and after each lesson in one class session. Two of the four classes participated in physical education activities, and the other two studied science. Each subject matter was studied the beginning and at the end of the school day. The research design was 2 x 2 x 2 factorial (two subject matters, two times of the school day, and as a repeated measure two times of test for each group at the beginning and end of each lesson). The level and the quality of concentration found at the end of each lesson were significantly higher than at the beginning. The subject matters did not influence concentration. It may be concluded that the time of day was the main influence on concentration, so teachers' claims against physical education activity lessons can be rejected. The increase in concentration toward the end of the lesson implies the need for careful lesson planning or even the consideration of increasing duration of lessons.     

Large quantity discrimination by North Island robins (Petroica longipes)

While numerosity—representation and enumeration of different numbers of objects—and quantity discrimination in particular have been studied in a wide range of species, very little is known about the numerical abilities of animals in the wild. This study examined spontaneous relative quantity judgments (RQJs) by wild North Island robins (Petroica longipes) of New Zealand. In Experiment 1, robins were tested on a range of numerical values of up to 14 versus 16 items, which were sequentially presented and hidden. In Experiment 2, the same numerical contrasts were tested on a different group of subjects but quantities were presented as whole visible sets. Experiment 3 involved whole visible sets that comprised of exceedingly large quantities of up to 56 versus 64 items. While robins shared with other species a ratio-based representation system for representing very large values, they also appeared to have developed an object indexing system with an extended upper limit (well beyond 4) that may be an evolutionary response to ecological challenges faced by scatter-hoarding birds. These results suggest that cognitive mechanism influencing an understanding of physical quantity may be deployed more flexibly in some contexts than previously thought, and are discussed in light of findings across other mammalian and avian species.     

The relationship of diabetes knowledge to regimen compliance and metabolic control during pregnancy

Abstract

The relationship of diabetes knowledge to regimen compliance and metabolic control was examined in a sample of pregnant women with preexisting insulin-dependent and noninsulin-dependent diabetes mellitus (N = 27) and women who developed gestational diabetes during pregnancy (N = 45). Subjects completed self-report measures of diabetes knowledge and compliance with their diabetic regimen and blood glucose levels were monitored. Knowledge was positively, although modestly, related to dietary compliance, compliance with insulin administration and insulin reaction management recommendations, as well as fasting blood glucose levels. Findings suggest that among pregnant women, efforts to increase knowledge of diabetes specific to pregnancy may result in some improvement in selected aspects of the diabetic regimen.     

Limits on efficient human mindreading: Convergence across Chinese adults and Semai children

We tested Apperly and Butterfill's (2009, Psychological Review, 116, 753) theory that humans have two mindreading systems whereby the efficient‐system guiding anticipatory glances displays signature limits that do not apply to the flexible system guiding verbal predictions. Experiments 1 and 2 tested urban Mainland‐Chinese adults (n = 64) and Experiment 3 tested Semai children living in the rainforests of Peninsular Malaysia (3‐ to 4‐year‐olds, n = 60). Participants – across different ages, groups and methods – anticipated others’ false‐beliefs about object‐location but not object‐identity. Convergence in signature limits signalled that the early‐developing efficient system involved minimal theory‐of‐mind. Chinese adults and older Semai children showed flexibility in their direct predictions. The flexible mindreading system in ascribing others’ beliefs as such was task‐sensitive and implicated maturational and cultural contributions.     

Expressive disclosure and benefit finding among breast cancer patients: mechanisms for positive health effects.

A randomized trial (n = 60; A. L. Stanton, S. Danoff-Burg, L. A. Sworowski, et al., 2002) revealed that 4 sessions of written expressive disclosure or benefit finding produced lower physical symptom reports and medical appointments for cancer-related morbidities at 3-month follow-up among breast cancer patients relative to a fact-control condition. The goal of this article is to investigate mechanisms underlying these effects. Within-session heart rate habituation mediated effects of expressive disclosure on physical symptoms, and greater use of negative emotion words in essays predicted a decline in physical symptoms. Postwriting mood and use of positive emotion and cognitive mechanism words in essays were not significant mediators, although greater cognitive mechanism word use was related to greater heart rate habituation and negative emotion word use.     

A Note on Prototypes,Convexity and Fuzzy Sets

The work on prototypes in ontologies pioneered by Rosch [10] and elaborated by Lakoff [8] and Freund [3] is related to vagueness in the sense that the more remote an instance is from a prototype the fewer people agree that it is an example of that prototype. An intuitive example is the prototypical “mother”, and it is observed that more specific instances like ”single mother”, “adoptive mother”, “surrogate mother”, etc., are less and less likely to be classified as “mothers” by experimental subjects. From a different direction Gärdenfors [4] provided a persuasive account of natural predicates to resolve paradoxes of induction like Goodman’s “Grue” predicate [5]. Gärdenfors proposed that “quality dimensions” arising from human cognition and perception impose topologies on concepts such that the ones that appear “natural” to us are convex in these topologies. We show that these two cognitive principles — prototypes and predicate convexity — are equivalent to unimodal (convex) fuzzy characteristic functions for sets. Then we examine the case when the fuzzy set characteristic function is not convex, in particular when it is multi-modal. We argue that this is an indication that the fuzzy concept should really be regarded as a super concept in which the decomposed components are subconcepts in an ontological taxonomy.     

The impact of brief teacher training on classroom management and child behavior in at-risk preschool settings: Mediators and treatment utility

Teachers from fourteen classrooms were randomly assigned to an adaptation of Incredible Years (IY) teacher training or to teacher training-as-usual. Observations were made of the behavior of 136 target preschool boys and girls nominated by teachers as having many or few conduct problems. Peer and teacher behavior were observed at baseline and post training. IY training resulted in increases in teachers' positive and reductions in teachers' negative behavior relative to training as usual, in decreased peer negative behavior toward target children, and in decreased negative behavior of target children high on conduct problems. The impact of IY training on the behavior of target children was mediated by changes in peers' behavior with no direct effects of teacher behavior and differential effects for high and low conduct problem children. Teacher training focused on altering the whole classroom environment may be an effective strategy, even for children with significant conduct problems.     

Marital Liberalization in Relation to Life Satisfaction

Applied Research in Quality of Life - Marital liberalization in terms of public support for polygamous, underage or child, and consanguineous or close-kin marriages emerges to be controversial and...