Reprint of ‘The psychometric properties of the McCarron Assessment of Neuromuscular Development as a longitudinal measure with Australian youth’

The importance of considering age and sex differences in the assessment of motor performance has been largely overlooked. This study examines the psychometric properties of the US developed McCarron Assessment of Neuromuscular Development (MAND) using data from a longitudinal sample of 986 Australian youth at 10, 14 and 17 years. A key finding was the sex and age interaction of the Neuromuscular Developmental Index (NDI) (F = 121.46, p < .001). Males had a significantly lower mean NDI score at 10 years and the females had a lower score at 17 years. The factor structure differed from the US samples ( McCarron, 1997) at each age and between males and females. The sex specific analyses showed that the underlying structure was more complex for younger females. Although the MAND remains a useful test of motor performance for Australian children, further consideration is warranted regarding sex differences, the relevance of the US based normative tables and factor structures.     

Low motor performance scores among overweight children: Poor coordination or morphological constraints?

This study examined whether lower motor performance scores can be full attributed to poor coordination, or whether weight related morphological constraints may also affect motor performance. Data for 666 children and adolescents from the longitudinal Western Australian Pregnancy Cohort (Raine) Study were grouped into normal weight, overweight and obese categories based on the International Obesity Task Force cut points. Participants completed the 10-item McCarron Assessment of Neuromuscular Development (MAND) at the 10 and 14 year follow-up. The prevalence of overweight and obese participants classified with mild or moderate motor difficulties was not different from the normal weight group at 10 years (χ² = 5.8 p = .215), but higher at 14 years (χ² = 11.3 p = .023). There were no significant differences in overall motor performance scores between weight status groups at 10 years, but at 14 years, the normal weight group achieved better scores than the obese group (p < .05). For specific items, the normal weight group consistently scored higher than the overweight and obese groups on the jump task at 10 (p < .001) and 14 (p < .01) years but lower on the hand strength task at both ages (p < .01). Our findings raise the question as to whether some test items commonly used for assessing motor competence are appropriate for an increasingly overweight and obese population.     

On Tugendhat's Analysis of Heidegger's Concept of Truth

This paper responds to Tugendhat's well‐known and influential critique of Heidegger's concept of truth with the resources of Heidegger's texts, in particular §44 of Being and Time. To start with, Tugendhat's primary critical argument is reconstructed. It is held to consist firstly in the charge of ambiguity against Heidegger's formulations of his concept of truth and secondly in the claim that Heidegger's concept of truth is incompatible with an adequate concept of falsehood. It is shown that the supposedly ambiguous meanings are, on the one hand, in fact clearly distinguished by Heidegger and, on the other, that they merely amount to different extensions of the same meaning of truth. It is then shown how this concept of truth is indeed compatible with an adequate, albeit post‐metaphysical, concept of falsehood. Finally, the grounds of falsehood in the untruth of the existential of Verfallen are pursued and further objections are dismissed.     

Community responses to a suicidal crisis: implications for suicide prevention

We conducted a cross‐sectional, random‐digit‐dial survey to evaluate public responses to a hypothetical question: “If someone you knew was suicidal, what would you do first?” Younger people were more likely to call a suicide hotline, and less likely to go to an emergency room (ER) or call 911; immigrants (in the U.S. <15 years) were more likely to call 911, and less likely to call a suicide hotline; African Americans were more likely to go to the ER and call 911; Hispanics were more likely to call 911 but less likely to call a suicide hotline. These results suggest that public messages about hotlines and emergency options for suicidal patients need to be tailored to relevant population characteristics including age, education, ethnicity, and language preferences.     

Sentence comprehension and memory for embedded structure

An experimental simulation technique is introduced to study memory constraints affecting comprehension of embedded sentences. Memory for embedded structure is measured in a pairing task that simulates requirements imposed by sentence comprehension. With increasing memory load (number of embeddings), the rate of performance decline is consistent across all (recall and comprehension) conditions, and reflects a loss of order (as opposed to item) information. Short-term memory overload, rather than linguistic complexity, appears sufficient to account for comprehension difficulty. Performance was imperfect even with singly embedded constructions. Recall showed no abrupt failure with multiple embeddings, indicating that memory constraints are not as discontinuous as English syntax might suggest.     

Attentional strategies for studying scientific texts

Content-area novices develop rules as to what types of information (e.g., definitions, facts, equations) are important in texts (Dee-Lucas & Larkin, 1988). The study reported here indicates that these rules influence text learning. Experts and novices read and recalled science texts. Reading times and recall for different types of content were compared for the two groups. Results indicate that novices’ importance rules function as part of novices’ control schema during reading, influencing their attentional processes and the resulting representation formed for the text. This was evident in qualitative differences between experts and novices in their attentional patterns and text recall. The study also found that the number of passage readings and the passage topic have a greater influence on the reading times of exports, but both groups adjust processing time according to the hierarchical level of the passage content. The findings are discussed in terms of their implications for novices learning from texts.     

Validation of a simple method of assessing cardiac preejection period: a potential index of sympathetic nervous system activity

Traditional noninvasive assessment of sympathetic nervous system (SNS) activity in cardiovascular functioning has been confounded by concurrent parasympathetic influences. Analyses of specific intervals of the cardiac cycle have indicated that the systolic preejection period (PEP) may serve as a reliable index of SNS activity independent of parasympathetic inhibition. In the present study, PEP values derived from a technique employing peripheral pulse wave tracings were compared to values obtained from simultaneous impedance cardiograph recordings. Recordings were made on 15 male subjects who were instructed to rest quietly sitting in an upright position. Results indicated that values obtained from both methods were highly correlated and not significantly different when measurement adjustments on total systole were taken into account. These findings support the validity of the fingertip peripheral-pulse method in obtaining measures of systolic time intervals under resting conditions.