ABSTRACT
Objective To develop a willpower scale for Chinese civil pilots.Methods 695 civil aviation pilots were collected by stratified random sampling based method on different positions.Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used to analyzed the data and tested the reliability and validity of scale.Results The scale consisted of 16 items and 4 dimensions (pressure resistance,self-control,insist and decisiveness).4 dimensions explained 59.978% of the total variance.The Cronbach's α coefficient of full scale was 0.800,and the Cronbach's α coefficient of each factors were from 0.715 to 0.783.Coefficient of stability of the scale was beyond 0.805 (P<0.01).The correlation coefficient among each dimensions were from 0.050 to 0.366 (P<0.01),and the coefficient between each dimensions and the total score were from 0.565 to 0.699(P<0.01) and criterion validity of the questionnaire was 0.655 (P<0.01).Confirmatory factor analysis showed that the fitting effect of the four factors model was optimal (GFI=0.909,IFI=0.948,TLI=0.934,CFI=0.946,RMSEA=0.054).Conclusion The scale meets the requirements of psychological surveying,and it can be used as an effective tool for willpower of Chinese civil pilots.
ABSTRACT
Medical examinations for aircrew (MEA) have been applied in various extents since World War I, when medical fitness of aircrew began to be spotlighted as a major factor of flight safety and flight performance. The main purpose of MEA is to identify any presumptive medical defects that may cause sudden incapacitation and aircraft accident consequently. However, the value of medical screening tests has been debated for many years and raised questions of their effectiveness and aeromedical usefulness. Therefore, this review article focuses on diverse perspectives regarding MEA and tries to develop the most appropriate way of implementing medical examinations for insuring flight safety.