Comparison of heart rate monitoring with indirect calorimetry for energy expenditure evaluation

PurposeThe purpose of this study was to compare established methods with newly-developed methods for estimating the total energy expenditure (TEE).MethodsThe study subjects comprised 46 individuals, including 16 middle-aged men (mean age 51.4 years), 14 middle-aged women (mean age 49.9 years) and 16 young women (mean age 19.1 years). The TEE was estimated from 24-h heart rate (HR) data using newly-developed software (MoveSense HRAnalyzer 2011a, RC1, Suunto Oy, Vantaa, Finland), and was compared against the TEE determined using doubly labeled water (DLW). Agreement between the two methods was analyzed using Bland and Altman plots.ResultsThe HR method yielded similar TEE values as the DLW method at the group level, with an average of 8.6 kcal/day in the difference in the mean, but with large individual variations. Forty-four (96%) out of 46 subjects fell within ±2SD of the mean difference in TEE comparisons, and there was no tendency towards under- or over-estimation.ConclusionOur results indicate that the current software using HR analysis for the estimation of daily TEE needs further development for use with free-living individuals.     

Young adult outcomes of the Abecedarian and CARE early childhood educational interventions

Adult benefits for participants in Project CARE were compared with those of the Abecedarian Project, a closely related randomized study of early childhood educational intervention for children from low-income families who were at risk of developmental delays and school failure. CARE replicated Abecedarian's young adult treatment-related educational and vocational attainment gains. CARE data also supported the Abecedarian reduction in marijuana use. Treated individuals in both studies reported adopting a more active life style. The average age at birth of a first child, the number of children, and the proportion of teen parents were positively affected in the Abecedarian sample but not in CARE. Finding significant educational and vocational gains lasting into young adulthood in the CARE study reinforces Abecedarian young adult findings and strengthens the case for early childhood intervention for children from low-income families.     

Use of grade-based norms versus age-based norms in psychoeducational assessment for a college population

Considerable discussion has occurred about the most appropriate methods for diagnosing learning disabilities (LD) in postsecondary students. Two of the many areas of controversy that have emerged include the appropriate diagnostic criteria to use and the appropriate referent group. A review of previous court cases demonstrates that the issue of whether to compare an individual to the general population or to a smaller referent population has not been adequately clarified. Furthermore, few empirical studies have examined the impact of choosing different referent groups on the likelihood that one will be diagnosed with LD. Therefore, this correlational study described the levels of agreement between three diagnostic models of LD, using both age- and grade-based norms to represent two referent groups for each of the three models. The sample included 155 postsecondary students referred for testing due to academic difficulties. The findings indicated that in two of the three models tested, comparing individuals to their grade-matched peers (i.e., using grade-based norms) resulted in more LD diagnoses than comparing individuals to their age-matched peers (i.e., age-based norms).     

Thinking outside the box: imagination and empathy beyond story writing

It is sometimes assumed that the strongest opportunities for developing imagination and empathy through children's writing lie in narrative starting points, whereas other less obviously literary writing forms are more readily associated with functional literacy. Consequently, writing regarded as non‐literary is rarely analysed with these qualities in mind. This paper presents an exploratory, textual analysis of children's letter‐writing texts, which aims to identify and describe the uses of imagination and empathy. It is suggested that imaginative strategies were integral to this textual construction and that the significance of imagination and empathy in writing development is worthy of further exploration.     

Herrnstein’s equation for the rates of responding during concurrent schedules

A modification of the nonlinear curve-fitting procedure proposed by Wetherington and Lucas (1980) was used to assess how well Herrnstein’s (1970) equation for the rates of responding during concurrent schedules described performance. The equation fitted some results very well, accounting for 80% or more of the variance in the data in studies that used moderate-duration changeover delays and provided the same positive reinforcers, operanda, and simple schedules in the two components. The equation fitted the data poorly in other studies. The k parameter changed with several variables; it was not as constant as Herrnstein (1974) suggested. R₀ did not fit Herrnstein’s interpretation as reinforcement from unprogrammed sources. Forty percent of all values of R₀ were negative, and another 23% were unreasonably large (greater than 50 reinforcers/h). The data suggest that Herrnstein’s equation is not a general theory of concurrent-schedule responding, and that Herrnstein’s interpretation of k and R₀ should be modified.     

Feasibility of the MTAI as a Selection Instrument for Pre-Service Teacher Education — A Pilot Project

The Institute of Education is the only institution in Singapore that trains and prepares individuals for the task of teaching. In order to ensure that its products, the teachers, are of a respectable calibre, not only should the training programme be reviewed regularly, but also the method of selecting trainees.     

Teacher perceptions and attitudes that foster or maintain sex role differences

In an attempt to determine the nature of sex role differences as perceived by teachers, a survey of 60 secondary school teachers was conducted. The results revealed teacher perceptions of traditional male-female student behavior in the classroom, teacher preference for male teachers and male students, and the reluctance of most teachers to facilitate sex role behavior changes. Other evidence cited supports the claim of proponents that males and females are socialized differently-toward the maintenance of traditional sex role behavior. How the education system can aim for a new role balance allowing greater independence, integrity, and freedom from misconceptions about the other sex is discussed.

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Résumé Dans le but de déterminer la nature des différences de rôle attribuables au sexe comme les professeurs le voient, une étude a été entreprise auprès de 60 professeurs d'école secondaire. Les résultats ont révélé les perceptions par les professeurs de conduite traditionnelle masculine et féminine en classe, la préférence de la part des professeurs pour étudiants mâles et enseignants mâles, et la répugnance de la majorité des professeurs de faciliter des changements dans la conduite attribuable au sexe. D'autres témoignages cités supportent l'affirmation des partisans de la différence sociale entre hommes et femmes-vers le maintien de la conduite traditionnelle relative aux sexes. La présente étude discute de quelle manière le système éducationnel peut être orienté vers un nouvel équilibre des rôles permettant plus d'indépendance et d'intégrité et moins de conceptions erronées à propos du sexe opposé.