During lunch a group of computer science majors were discussing their choice of field. One student admitted that he had once considered becoming an accountant but decided against it because "accountants are all boring number crunchers without an ounce of creativity." This statement best reflects the:

out-group homogeneity effect.

Explanation:

Out-group homogeneity effect: The term out-group homogeneity effect is defined as an individual's perception or thinking pattern related to out-group members comparatively more similar to each other than the members of the in-group. It is also denoted as out-group homogeneity bias.

In other words, an individual sees an out-group as similar or homogeneous and in-group as varied or heterogeneous.

In the question above, the given statement best reflects the out-group homogeneity effect.