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Background: Aims: To investigate the developmental trajectory of the rate and perceptual assessment of oral diadochokinesis (DDK) in typically developing children compared with adults. Also to examine the characteristics of DDK productions in children with speech sound disorders (SSD) and the relationship between DDK production and percentage of consonants correct (PCC). Methods & Procedures: Participants were 316 typically developing children and 90 children with SSD from 3 to 9 years old, as well as 20 adults with normal speech. The mono‐, bi‐ and trisyllabic nonsense strings containing Korean tense consonants and the vowel [a] were used for DDK tasks. The number of iterations per s was measured as the DDK rate for each stimulus. The perceptual assessment of DDK productions was also performed for regularity, accuracy and rate. Outcomes & Results: The DDK rates increased throughout childhood, but the oldest children, 9‐year‐olds in the current study, did not achieve adult‐like rates for all mono‐ and trisyllabic strings. Children with SSD also did not show significant differences from typically developing children when the DDK productions were analysed using only accurate tokens. The PCC of children with SSD showed higher correlations with regularity, accuracy and rate of perceptual ratings than the timed DDK rate. Conclusions & Implications: This study highlighted the fact that the comprehensive evaluation of DDK productions may provide even more useful information about children's oral motor skills. WHAT THIS PAPER ADDS: What is already known on the subject: Rates of DDK reflect the motor skills of the articulatory systems independently of phonological skills; therefore, the tasks are widely used in the diagnostic evaluations of speech disorders in both children and adult populations. However, a substantial number of studies have questioned the validity and usefulness of DDK rates for evaluating speech abilities. Also, the literature suggested that the measure of DDK rate alone does not provide a clear and useful indication of children's oral motor skills. DDK tasks should be analysed in terms of accuracy and consistency as well as rate. What this paper adds to the existing knowledge: The literature reporting normative DDK performance has mainly been based on English speakers. As different consonants have different temporal characteristics, the linguistic and segmental features of DDK tasks can impact the DDK rate. This study established a norm for DDK rate for Korean‐speaking children and investigated the developmental trajectory of DDK performance in typically developing children compared with adults. This study suggested that the comprehensive evaluation of DDK productions may provide even more useful information about children's oral motor skills by examining the characteristics of DDK productions in children with SSD. What are the potential or actual clinical implications of this work?: This study provided normative data of young Korean‐speaking children aged 3–9 years. Normative data in children under 5 years of age are valuable given that the majority of children referred for speech difficulty assessments are between 3 and 5 years of age, but only a few studies have provided the normative data in young children. This study showed that many children could not complete DDK tasks correctly and provided additional support for the notion that other aspects of DDK performance, including accuracy and regularity, may yield more useful diagnostic indications than timed DDK rates alone. [ABSTRACT FROM AUTHOR]

Integrating the literatures on strategic human resource management and organizational support theory, we examine the cross‐level relationship between high performance work systems (HPWS) at the team‐level and individual perceptions of organizational support (i.e., POS). In addition, we introduce a critical boundary condition, the HR department's organizational embodiment (HROE), which involves the extent to which employees identify the HR department with the organization. We propose that the cross‐level HPWS–POS relationship is moderated by HROE, such that the linkage between HPWS and POS is stronger when HROE is high. With a sample of 103 teams and 399 employees in South Korea, we find that HPWS utilization increases POS and that this relationship is stronger when HROE is high. We also find that HR department status and the favorable attitude of the HR head are antecedents to HROE. These findings suggest that HROE is a critical boundary condition for the relationship between HPWS and POS with subsequent effects on organizational commitment and job satisfaction. [ABSTRACT FROM AUTHOR]

Objective Little is known about rural-urban cancer disparities, particularly in South Korea, and this study is to identify cancer-specific mortality inequalities between the rural and urban areas of the country. Design, setting, and participants For 11 specific cancer sites, age-standardised mortality rates were analysed for the rural and urban administrative districts of South Korea during 2006-2011. Main outcome measures The Poisson log linear regression models were employed to estimate cancer-specific mortality rates, and Bonferroni comparison method was used to identify rural-urban disparities. Results There were significant rural-urban disparities observed for all cancer sites except prostate, pancreas and leukaemia. The mortality rates of lung, liver and stomach cancers, the three most common cancers in the country, were observed to be significantly higher in rural areas than in metropolitan areas. In contrast, the reverse relationship was observed for the reproductive system (breast and uterus) and colon cancers. Central nervous system cancer mortality was observed to be significantly higher in rural areas than in non-metro urban areas. Conclusions For the first time ever, significant rural-urban disparity patterns in cancer mortality rates in South Korea have been identified in this paper. Future investigations on cancer risk factors for the country should address these disparity patterns. [ABSTRACT FROM AUTHOR]

Objectives As the need for greater global health competency increases for health care professionals in South Korea, educational efforts for nursing students have begun. This study examined the effectiveness of two educational courses for freshmen and sophomores that were designed to improve students' global health competencies. Design and Sample A trend study was conducted for all undergraduate nursing students enrolled in a 4-year undergraduate nursing program in 2013 and 2014. Measures We assessed students' global health competencies (1-knowledge and interests in global health and health equity, 2-global health skills, and 3-learning needs) in 2013 and 2014 and analyzed variance between mean scores by year and by course exposure, using 95% confidence intervals. Results Students who took both global health courses (sophomores in both years) reported higher global health-related knowledge and interests than did freshmen ( p < .01); these scores were not sustained a year later. Conclusions The two courses may have improved students' global health competencies. Reinforcement of knowledge in later courses may be needed to build on the global competencies. [ABSTRACT FROM AUTHOR]