Higher education institutions are striving to lower student dropout rates to increase the number of academically qualified persons in the labour market and decrease misguided investment. Researchers generally acknowledge that students who are firmly decided on their studies tend to drop out of their studies less frequently. Building on the extended expectancy-value model via the cost component, this longitudinal study investigates changes in and the impact of students’ motivation on career decidedness and intention to drop out. We analysed data from 351 first-year university students aiming to become teachers across three measurement points, finding that the task effort of students and, to a lesser degree, their interest value was related to career decidedness and, indirectly, to the intention to drop out after the first year in higher education. Moreover, the results revealed that these students’ ability beliefs increased and interest value decreased from the beginning to the end of the first year at higher education. Accordingly, we discuss the theoretical and practical implications taken from these findings.

高等教育机构正在努力降低学生的辍学率，以增加劳动力市场上具有学术资格的人员的数量，并减少误导性投资。研究人员普遍承认，对自己的学业有坚定决定权的学生倾向于辍学的频率降低。这项纵向研究建立在通过成本成分扩展的期望值模型的基础上，调查了学生动机变化对职业决定和辍学意图的影响以及其影响。我们分析了351名一年级大学生的数据，这些数据旨在通过三个测量点成为教师，发现学生的工作努力以及他们的兴趣价值在较小程度上与职业的毅力有关，并且间接地与辍学的意愿有关。在高等教育的第一年之后。而且，结果表明，这些学生的能力信念在高等教育的第一年开始到结束时有所增加，而兴趣价值则有所下降。因此，我们讨论了从这些发现中获得的理论和实践意义。