ASSESSMENT OF JOB STRESS DIMENSIONS BASED ON THE JOB DEMANDS-CONTROL MODEL OF EMPLOYEES OF TELECOMMUNICATION AND ELECTRIC-POWER COMPANIES IN JAPAN - RELIABILITY AND VALIDITY OF THE JAPANESE VERSION OF THE JOB CONTENT QUESTIONNAIRE
N. Kawakami et al., ASSESSMENT OF JOB STRESS DIMENSIONS BASED ON THE JOB DEMANDS-CONTROL MODEL OF EMPLOYEES OF TELECOMMUNICATION AND ELECTRIC-POWER COMPANIES IN JAPAN - RELIABILITY AND VALIDITY OF THE JAPANESE VERSION OF THE JOB CONTENT QUESTIONNAIRE, International journal of behavioral medicine, 2(4), 1995, pp. 358-375
To investigate the reliability and validity of 4 selected scales from
the Japanese version of the Job Content Questionnaire (JCQ, Karasek, 1
985)decision latitude, psychological demand, supervisor support, and c
oworker support-a survey was conducted on a total of 626 employees of
telephone and electric companies in Japan. The survey questionnaire wa
s composed of 22 items. Data from 472 male and 10X female respondents
were analyzed. Cronbach's alpha coefficients far the four JCQ scales r
anged from .61 to .89 for men and from .65 to .87 for women. Scree plo
ts based on factor analyses of scale items indicated that one major fa
ctor explained 30% to 75% of each scale variance in men and women. Fac
tor structures of the 22 items for men and women were consistent with
those theoretically expected. Distributions of the decision latitude s
cores among occupations for men and women were similar to those in the
U.S, national samples; the scores significantly and positively correl
ated with occupational class. It is suggested that the JCQ scales are
reliable and valid instruments for assessing job stressors in a Japane
se working population.