Abstract:
This research aims to ( 1) synthesize components of health literacy, ( 2) develop and validate the quality of the test item specifications of health literacy test for lower secondary school students, ( 3) develop and validate the quality of health literacy test for lower secondary school students, and ( 4) Create a norm of health literacy score of lower secondary school students. The samples consisted of 740 lower secondary school students using multi-stage random sampling. The research instruments were the health interest survey, the test item specifications of health literacy test, and the health literacy test. The research findings were described as follows. ( 1) There were four components of the health literacy including health information accessibility, health information understanding, health decisions, and health information communication. (2) Components of the test item specifications of health literacy test consisted of objectives of testing, test scope, test structure and format, item specifications, evaluation criteria, and test samples. Quality of the overall test item specifications of health literacy test was very good ( M = 4. 30, SD = 0. 59) . ( 3) The health literacy test for lower secondary school students is a multiple- choice of 39 questions. Quality of the test consisted of content validity ( IOC is between 0. 60- 1. 00 accounted for 97. 44% ) , construct validity (chi-square = 62.338, df = 58, p = 0.325, GFI = 0.987, AGFI = 0.980, RMSEA = 0.010), the item that passed the criteria at 89.74%, and reliability was at a high level (α = 0.721). (4) National norm of overall health literacy score of lower secondary school students was normalized T- score ranged from T18 to T82 (P. 07 P99. 93). When considering each component, the health information accessibility component was normalized T- score ranged from T17 to T71 (P.47 P98.18), the health information understanding component was normalized T-score ranged from T19 to T79 (P1. 01 P99. 80), the health decisions component was normalized T- score ranged from T15 to T82 (P.20 P99.93), and the health information communication component was normalized T-score ranged from T28 to T80 (P1.55 P99.86).