原著
オプティミストは健康か?
1993 年 6 巻 2 号 p. 1-11
詳細
1993 年 6 巻 2 号 p. 1-11
The purpose of this study is to develop the Japanese version of the Life Orientation Test(Scheier & Carver, 1985), and to examine the relationship between the tendency of optimism and the physical and psychological health. 1,149 university students were requested to perform the Japanese version LOT and the following scales: Cornell Medical Index (CMI), Feeling of Health Inventory, General Self-Efficacy Scale (GSES) and Self-rating Depression Scale (SDS), which were used as indices of psychological health. The scores of height, weight, systolic and diastolic blood pressure, and the result of urinary examinations (albumin, urinasanguinis and score of blood sugar) were used as indices of of physical health.
As the result of a factor analysis, two factors were extracted for LOT: positive thinking for the present and the future (P-thinking), negative thinking for the past (N-thinking).
On the relationship between the tendency of optimism and psychological health, multiple regression analysis revealed that P-thinking influenced to the psychological health, correlating with it. Furthermore the result of the ANOVA suggested that an individual who showed higher P-thinking or lower N-thinking was healthier subjectively. Especially, the tendency not to think optimistic influenced for the depressive mood.
On the physical health, all subiects were divided into three groups: slim, standard, and obese groups, according to their BMI scores. The results of the ANOVA suggested that subjects in the obese group had more N-thinking than Ss in the slim group. As a result of t-test revealed that high blood pressure group showed more N-thinking than the standard group. Therefore, it was proved that an individual, who was not healthy physically, tended to have N-thinking.
It was suggested that an individual, who think optimistic, can behave actively without fear for failure, and might get success. lt was also suggeted that pessimistic thinking was a cause of becoming depressive and optimistic thinking decrease depressive mood.
