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The first aim of this study is to design the task that measures practical multitasking ability, not experience. The second aim of this study is to investigate the relationship between individual’s practical multitasking skills and ensemble perception ability.

Improving nurse work environment is essential to address the issue of increased staff nurse turnover. Staff nurse decisional involvement has been studied in terms of improving nurse work environment and reducing staff nurse turnover. Thus, nursing management’s involving staff nurse in decisions at their working unit level would be a good strategy to improve the nurse work environment and reduce staff nurse turnover. This dissertation is composed of three separate studies: The purpose of chapter two was to define the concept, theoretical framework, and related factors of staff nurse decisional involvement and to identify knowledge gaps in staff nurse decisional involvement in English-speaking, Western versus non-English-speaking, Asian countries. A total of 16 articles were selected from 102 articles originally retrieved to fill the knowledge gaps in staff nurse decisional involvement using the PRISMA method. The conceptual framework of staff nurse decisional involvement based on the content and context of nursing practice framework was defined, and the findings showed that staff nurses actually were less involved in decisions than they preferred in to be both Western and Asian countries. The purpose of chapter three was to translate the English Decisional Involvement Scale (DIS) (Havens & Vasey, 2003) into Korean (K-DIS) for use in South Korea. The DIS was refactored so that K-DIS was a five-factor, 19-item measure: Resources and Support Staff, Collaboration/Liaison Activities, Professional Practice Scope and Workforce for Quality of Care, RN Recruitment, and Leadership. The instrument demonstrated good reliability, but its validity was not strongly supported. Thus, further research on assessing the construct validity of the K-DIS is necessary. The purpose of chapter four was to examine the influence of staff nurse decisional involvement on nurse job satisfaction, organizational commitment, and turnover intention. A descriptive correlational design was used to analyze of the data (n=300) from staff nurses working in two university hospitals (i.e., two urban, academic medical centers) in South Korea. The results show that Korean staff nurses prefer more decisional involvement than they actually experienced. The dissonance between the actual and preferred levels was negatively correlated with nurse job satisfaction (rs= -.33, p