The national decline in Biology learning outcomes highlights the need to explore students' internal factors. This study aims to determine the influence of achievement motivation and adversity intelligence on the cognitive Biology learning outcomes of Grade XI students in public senior high schools in Makassar City. This research used a quantitative approach with an ex post facto design and correlational method. A total of 297 students were selected using cluster random sampling from four representative schools. Instruments included questionnaires on achievement motivation and adversity intelligence, as well as a cognitive biology test. Descriptive analysis showed that 35.3% of students had a moderate level of adversity intelligence (mean = 72.82), and 36.4% had a moderate level of achievement motivation (mean = 82.87). Cognitive learning outcomes were also mostly in the moderate category with an average score of 80.19. Inferential analysis indicated that achievement motivation (r = 0.433, p < 0.05) and adversity intelligence (r = 0.416, p < 0.05) had a positive and significant effect on learning outcomes. Simultaneously, both variables contributed 25.9% to cognitive learning outcomes. These findings underscore the importance of strengthening internal psychological aspects to support students' academic success in Biology.
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