Numerous factors are proposed to affect high school students' academic achievement; however, these factors may not reveal all possible causal relationships. This study conducted path analysis to examine the direct and indirect effects of interpersonal relationships, life satisfaction, self-esteem, anxiety, and depression on the academic achievement of senior high school students. Two hundred and eighty-five students from five schools in Chiang Mai, Thailand, aged 14-19 years, were included for data analysis. The fit indices of all models were in agreement with the empirical data. Anxiety levels had a significantly positive direct effect on achievement, whereas depression had a negative direct effect on achievement. Additionally, self-esteem, life satisfaction, and interpersonal relationships had negative indirect effects on depression and anxiety. A program that stimulates the optimal and appropriate level of anxiety may be useful. An appropriate level of anxiety appeared positively related to academic achievement, but a high level of anxiety relatively influenced the incidence of depression. Thus, encouraging self-esteem, interpersonal relationships, and life satisfaction can promote academic ability and decrease the risk of depression. Further well-designed and large sample-size studies should be conducted to confirm these findings. The interplay of all studied factors may account for the variation in academic achievement, depression, and anxiety of 11.60%, 42.80%, and 17.60%, respectively.
Keywords: academic achievement; anxiety; depression; interpersonal relationships; life satisfaction; self-esteem.