Individual differences in 'adaptability' -- cognitive, behavioural, and emotional adjustment in the face of change, novelty, and uncertainty -- are theorised to influence students' academic achievement and course satisfaction; although the literature examining these relations in tertiary education is sparse. In the present study, first-year undergraduate students were surveyed for their adaptability, academic buoyancy, and academic motivation (predictor variables) along with their mid-course academic achievement and course satisfaction (outcome variables). Correlation analyses revealed that adaptability was significantly associated with all other variables in this study. Multiple regression analyses revealed that after controlling for individual differences in academic buoyancy and academic motivation, adaptability explained unique variance in both academic achievement and course satisfaction. These findings have important implications for researchers and educators seeking to understand first-year students' adjustment to university and the influence this may have on their educational outcomes.