Step 1: Jim and Jenna are in calculus, and both performed poorly (behavior) on the first test. The low score on the first test (environmental factor) has influenced their self-esteem (personal factor). But each of them has a different attributional style (personal factor) that the will interact with the feedback from the professor (environmental factor) to produce different behaviors in the future.
Step 2: Differences in attributional style (personal factor) produce two different explanations for a poor score.
Step 3: For both Jim and Jenna, their attributional style (personal factor) will influence what they do to prepare for the next text (behavior).
Step 4: Jim is in a downward spiral in terms of study time (behavior) and test performance, while Jenna is steadily improving. Their behavior is influencing the classroom environment: The professor is influencing their self-esteem (personal factor).
Step 5: Jim and Jenna have both engaged in behaviors that have shaped their environment, but the feedback from the environment has shaped their attitudes and beliefs (personal factor).They started at the same place early in the course, but reciprocal determinism has pushed them in different directions by the end of the course.