Final answer:
The scenario with Marlena is an example of attribution retraining, where success is attributed to controllable factors such as effort. It also illustrates the concept of grit, as Marlena perseveres through her task. Praise from the instructor likely enhances her intrinsic motivation to succeed.
Step-by-step explanation:
Marlena's experience in the given scenario is best described by attribution retraining. This psychological concept is concerned with changing the beliefs individuals have about their own ability to achieve and their understanding of why success or failure occurs. The instructor's comments focus on Marlena's effort and strategies, which align with principles of attribution retraining — where one is taught to attribute success to internal, controllable factors such as effort.
Grit or resilience is also illustrated here, as Marlena continues to persevere in her task despite initial struggles. Grit is the personal perseverance toward a task or goal, and it represents a significant factor in learning and motivation.
Furthermore, the encouragement to try harder and the recognition of successful strategies may enhance Marlena's intrinsic motivation, which is not easily undermined by extrinsic reinforcements like praise. In fact, praise might increase intrinsic motivation in some cases, making it more likely for Marlena to continue engaging in such tasks with determination in the future.